diff --git a/.github/workflows/test-federation.yml b/.github/workflows/test-federation.yml
new file mode 100644
index 0000000000..9ca28fe328
--- /dev/null
+++ b/.github/workflows/test-federation.yml
@@ -0,0 +1,55 @@
+name: Test (federation)
+
+on:
+  push:
+    branches:
+      - master
+      - develop
+    paths:
+      - packages/backend/**
+      - packages/misskey-js/**
+      - .github/workflows/test-federation.yml
+  pull_request:
+    paths:
+      - packages/backend/**
+      - packages/misskey-js/**
+      - .github/workflows/test-federation.yml
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [20.16.0]
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install FFmpeg
+        uses: FedericoCarboni/setup-ffmpeg@v3
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4.0.3
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'pnpm'
+      - name: Build Misskey
+        run: |
+          corepack enable && corepack prepare
+          pnpm -F misskey-js i --frozen-lockfile
+          pnpm -F misskey-js build
+          pnpm -F misskey-reversi i --frozen-lockfile
+          pnpm -F misskey-reversi build
+          pnpm -F backend i --frozen-lockfile
+          pnpm -F backend build
+          pnpm -F backend build:fed
+      - name: Setup
+        run: |
+          cd packages/backend/test-federation
+          cp ./.env.example ./.env
+          bash ./generate_certificates.sh
+          sudo chmod 644 ./certificates/*.local.key
+      - name: Start servers
+        # https://github.com/docker/compose/issues/1294#issuecomment-374847206
+        run: docker compose up -d --scale tester=0
+      - name: Test
+        run: docker compose run tester
+      - name: Stop servers
+        run: docker compose down
diff --git a/.gitignore b/.gitignore
index b270d5cb3a..5b8a798ba6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -37,7 +37,7 @@ coverage
 !/.config/docker_example.env
 !/.config/cypress-devcontainer.yml
 docker-compose.yml
-compose.yml
+./compose.yml
 .devcontainer/compose.yml
 !/.devcontainer/compose.yml
 
diff --git a/packages/backend/package.json b/packages/backend/package.json
index a06fd9156b..55452d6539 100644
--- a/packages/backend/package.json
+++ b/packages/backend/package.json
@@ -16,6 +16,7 @@
 		"build:test": "swc test-server -d built-test -D --config-file test-server/.swcrc --strip-leading-paths",
 		"watch:swc": "swc src -d built -D -w --strip-leading-paths",
 		"build:tsc": "tsc -p tsconfig.json && tsc-alias -p tsconfig.json",
+		"build:fed": "cd test-federation && tsc -p tsconfig.json",
 		"watch": "node ./scripts/watch.mjs",
 		"restart": "pnpm build && pnpm start",
 		"dev": "node ./scripts/dev.mjs",
diff --git a/packages/backend/test-federation/.config/a.local.conf b/packages/backend/test-federation/.config/a.local.conf
new file mode 100644
index 0000000000..cbb65b6e05
--- /dev/null
+++ b/packages/backend/test-federation/.config/a.local.conf
@@ -0,0 +1,70 @@
+# based on https://github.com/misskey-dev/misskey-hub/blob/7071f63a1c80ee35c71f0fd8a6d8722c118c7574/src/docs/admin/nginx.md
+
+# For WebSocket
+map $http_upgrade $connection_upgrade {
+	default upgrade;
+	'' close;
+}
+
+proxy_cache_path /tmp/nginx_cache levels=1:2 keys_zone=cache1:16m max_size=1g inactive=720m use_temp_path=off;
+
+server {
+	listen 80;
+	listen [::]:80;
+	server_name a.local;
+
+	# For SSL domain validation
+	root /var/www/html;
+	location /.well-known/acme-challenge/ { allow all; }
+	location /.well-known/pki-validation/ { allow all; }
+	location / { return 301 https://$server_name$request_uri; }
+}
+
+server {
+	listen 443 ssl;
+	listen [::]:443 ssl;
+	http2 on;
+	server_name a.local;
+
+	ssl_session_timeout 1d;
+	ssl_session_cache shared:ssl_session_cache:10m;
+	ssl_session_tickets off;
+
+	ssl_trusted_certificate /etc/nginx/certificates/rootCA.crt;
+	ssl_certificate /etc/nginx/certificates/$server_name.crt;
+	ssl_certificate_key /etc/nginx/certificates/$server_name.key;
+
+	# SSL protocol settings
+	ssl_protocols TLSv1.2 TLSv1.3;
+	ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
+	ssl_prefer_server_ciphers off;
+	ssl_stapling on;
+	ssl_stapling_verify on;
+
+	# Change to your upload limit
+	client_max_body_size 80m;
+
+	# Proxy to Node
+	location / {
+		proxy_pass http://misskey.a.local:3000;
+		proxy_set_header Host $host;
+		proxy_http_version 1.1;
+		proxy_redirect off;
+
+		# If it's behind another reverse proxy or CDN, remove the following.
+		proxy_set_header X-Real-IP $remote_addr;
+		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+		proxy_set_header X-Forwarded-Proto https;
+
+		# For WebSocket
+		proxy_set_header Upgrade $http_upgrade;
+		proxy_set_header Connection $connection_upgrade;
+
+		# Cache settings
+		proxy_cache cache1;
+		proxy_cache_lock on;
+		proxy_cache_use_stale updating;
+		proxy_force_ranges on;
+		add_header X-Cache $upstream_cache_status;
+	}
+}
diff --git a/packages/backend/test-federation/.config/b.local.conf b/packages/backend/test-federation/.config/b.local.conf
new file mode 100644
index 0000000000..380b2ceef3
--- /dev/null
+++ b/packages/backend/test-federation/.config/b.local.conf
@@ -0,0 +1,70 @@
+# based on https://github.com/misskey-dev/misskey-hub/blob/7071f63a1c80ee35c71f0fd8a6d8722c118c7574/src/docs/admin/nginx.md
+
+# For WebSocket
+map $http_upgrade $connection_upgrade {
+	default upgrade;
+	'' close;
+}
+
+proxy_cache_path /tmp/nginx_cache levels=1:2 keys_zone=cache1:16m max_size=1g inactive=720m use_temp_path=off;
+
+server {
+	listen 80;
+	listen [::]:80;
+	server_name b.local;
+
+	# For SSL domain validation
+	root /var/www/html;
+	location /.well-known/acme-challenge/ { allow all; }
+	location /.well-known/pki-validation/ { allow all; }
+	location / { return 301 https://$server_name$request_uri; }
+}
+
+server {
+	listen 443 ssl;
+	listen [::]:443 ssl;
+	http2 on;
+	server_name b.local;
+
+	ssl_session_timeout 1d;
+	ssl_session_cache shared:ssl_session_cache:10m;
+	ssl_session_tickets off;
+
+	ssl_trusted_certificate /etc/nginx/certificates/rootCA.crt;
+	ssl_certificate /etc/nginx/certificates/$server_name.crt;
+	ssl_certificate_key /etc/nginx/certificates/$server_name.key;
+
+	# SSL protocol settings
+	ssl_protocols TLSv1.2 TLSv1.3;
+	ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
+	ssl_prefer_server_ciphers off;
+	ssl_stapling on;
+	ssl_stapling_verify on;
+
+	# Change to your upload limit
+	client_max_body_size 80m;
+
+	# Proxy to Node
+	location / {
+		proxy_pass http://misskey.b.local:3000;
+		proxy_set_header Host $host;
+		proxy_http_version 1.1;
+		proxy_redirect off;
+
+		# If it's behind another reverse proxy or CDN, remove the following.
+		proxy_set_header X-Real-IP $remote_addr;
+		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+		proxy_set_header X-Forwarded-Proto https;
+
+		# For WebSocket
+		proxy_set_header Upgrade $http_upgrade;
+		proxy_set_header Connection $connection_upgrade;
+
+		# Cache settings
+		proxy_cache cache1;
+		proxy_cache_lock on;
+		proxy_cache_use_stale updating;
+		proxy_force_ranges on;
+		add_header X-Cache $upstream_cache_status;
+	}
+}
diff --git a/packages/backend/test-federation/.config/default.a.yml b/packages/backend/test-federation/.config/default.a.yml
new file mode 100644
index 0000000000..9a1456afde
--- /dev/null
+++ b/packages/backend/test-federation/.config/default.a.yml
@@ -0,0 +1,25 @@
+url: https://a.local/
+port: 3000
+db:
+  host: db.a.local
+  port: 5432
+  db: misskey
+  user: postgres
+  pass: postgres
+dbReplications: false
+redis:
+  host: redis.local
+  port: 6379
+id: 'aidx'
+proxyBypassHosts:
+  - api.deepl.com
+  - api-free.deepl.com
+  - www.recaptcha.net
+  - hcaptcha.com
+  - challenges.cloudflare.com
+proxyRemoteFiles: true
+signToActivityPubGet: true
+allowedPrivateNetworks: [
+  '127.0.0.1/32',
+  '172.20.0.0/16'
+]
diff --git a/packages/backend/test-federation/.config/default.b.yml b/packages/backend/test-federation/.config/default.b.yml
new file mode 100644
index 0000000000..0785cd7391
--- /dev/null
+++ b/packages/backend/test-federation/.config/default.b.yml
@@ -0,0 +1,25 @@
+url: https://b.local/
+port: 3000
+db:
+  host: db.b.local
+  port: 5432
+  db: misskey
+  user: postgres
+  pass: postgres
+dbReplications: false
+redis:
+  host: redis.local
+  port: 6379
+id: 'aidx'
+proxyBypassHosts:
+  - api.deepl.com
+  - api-free.deepl.com
+  - www.recaptcha.net
+  - hcaptcha.com
+  - challenges.cloudflare.com
+proxyRemoteFiles: true
+signToActivityPubGet: true
+allowedPrivateNetworks: [
+  '127.0.0.1/32',
+  '172.20.0.0/16'
+]
diff --git a/packages/backend/test-federation/.config/docker.env b/packages/backend/test-federation/.config/docker.env
new file mode 100644
index 0000000000..b2a0177c84
--- /dev/null
+++ b/packages/backend/test-federation/.config/docker.env
@@ -0,0 +1,4 @@
+NODE_EXTRA_CA_CERTS=/usr/local/share/ca-certificates/rootCA.crt
+POSTGRES_DB=misskey
+POSTGRES_USER=postgres
+POSTGRES_PASSWORD=postgres
diff --git a/packages/backend/test-federation/.env.example b/packages/backend/test-federation/.env.example
new file mode 100644
index 0000000000..97ec4d3594
--- /dev/null
+++ b/packages/backend/test-federation/.env.example
@@ -0,0 +1 @@
+TESTER_IP_ADDRESS=172.20.1.1
diff --git a/packages/backend/test-federation/.gitignore b/packages/backend/test-federation/.gitignore
new file mode 100644
index 0000000000..dd03bf2cab
--- /dev/null
+++ b/packages/backend/test-federation/.gitignore
@@ -0,0 +1,3 @@
+certificates
+volumes
+.env
diff --git a/packages/backend/test-federation/README.md b/packages/backend/test-federation/README.md
new file mode 100644
index 0000000000..c69a0c611f
--- /dev/null
+++ b/packages/backend/test-federation/README.md
@@ -0,0 +1,7 @@
+Execute following commands:
+```sh
+cp ./.env.example ./.env
+bash ./generate_certificates.sh
+pnpm build:fed
+docker compose up
+```
diff --git a/packages/backend/test-federation/compose.a.yml b/packages/backend/test-federation/compose.a.yml
new file mode 100644
index 0000000000..3046c166df
--- /dev/null
+++ b/packages/backend/test-federation/compose.a.yml
@@ -0,0 +1,148 @@
+services:
+  a.local:
+    image: nginx:1.27
+    depends_on:
+      misskey.a.local:
+        condition: service_healthy
+    networks:
+      - internal_network_a
+    volumes:
+      - type: bind
+        source: ./.config/a.local.conf
+        target: /etc/nginx/conf.d/a.local.conf
+        read_only: true
+      - type: bind
+        source: ./certificates/a.local.crt
+        target: /etc/nginx/certificates/a.local.crt
+        read_only: true
+      - type: bind
+        source: ./certificates/a.local.key
+        target: /etc/nginx/certificates/a.local.key
+        read_only: true
+      - type: bind
+        source: ./certificates/rootCA.crt
+        target: /etc/nginx/certificates/rootCA.crt
+        read_only: true
+    healthcheck:
+      test: service nginx status
+      interval: 5s
+      retries: 20
+
+  misskey.a.local:
+    image: node:20
+    depends_on:
+      db.a.local:
+        condition: service_healthy
+      redis.local:
+        condition: service_healthy
+    networks:
+      - internal_network_a
+    env_file:
+      - ./.config/docker.env
+    environment:
+      - NODE_ENV=production
+    volumes:
+      - type: bind
+        source: ./.config/default.a.yml
+        target: /misskey/.config/default.yml
+        read_only: true
+      - type: bind
+        source: ../../../built
+        target: /misskey/built
+        read_only: true
+      - type: bind
+        source: ../assets
+        target: /misskey/packages/backend/assets
+        read_only: true
+      - type: bind
+        source: ../built
+        target: /misskey/packages/backend/built
+        read_only: true
+      - type: bind
+        source: ../migration
+        target: /misskey/packages/backend/migration
+        read_only: true
+      - type: bind
+        source: ../ormconfig.js
+        target: /misskey/packages/backend/ormconfig.js
+        read_only: true
+      - type: bind
+        source: ../package.json
+        target: /misskey/packages/backend/package.json
+        read_only: true
+      - type: bind
+        source: ../../misskey-js/built
+        target: /misskey/packages/misskey-js/built
+        read_only: true
+      - type: bind
+        source: ../../misskey-js/package.json
+        target: /misskey/packages/misskey-js/package.json
+        read_only: true
+      - type: bind
+        source: ../../misskey-reversi/built
+        target: /misskey/packages/misskey-reversi/built
+        read_only: true
+      - type: bind
+        source: ../../misskey-reversi/package.json
+        target: /misskey/packages/misskey-reversi/package.json
+        read_only: true
+      - type: bind
+        source: ../../../healthcheck.sh
+        target: /misskey/healthcheck.sh
+        read_only: true
+      - type: bind
+        source: ../../../package.json
+        target: /misskey/package.json
+        read_only: true
+      - type: bind
+        source: ../../../pnpm-lock.yaml
+        target: /misskey/pnpm-lock.yaml
+        read_only: true
+      - type: bind
+        source: ../../../pnpm-workspace.yaml
+        target: /misskey/pnpm-workspace.yaml
+        read_only: true
+      - type: bind
+        source: ./certificates/rootCA.crt
+        target: /usr/local/share/ca-certificates/rootCA.crt
+        read_only: true
+    working_dir: /misskey
+    command: >
+      bash -c "
+        corepack enable && corepack prepare
+        pnpm -F backend i
+        pnpm -F misskey-js i
+        pnpm -F misskey-reversi i
+        pnpm -F backend migrate
+        pnpm -F backend start
+      "
+    healthcheck:
+      test: bash /misskey/healthcheck.sh
+      interval: 5s
+      retries: 20
+
+  db.a.local:
+    image: postgres:15-alpine
+    networks:
+      - internal_network_a
+    env_file:
+      - ./.config/docker.env
+    volumes:
+      - type: bind
+        source: ./volumes/db.a
+        target: /var/lib/postgresql/data
+        bind:
+          create_host_path: true
+    healthcheck:
+      test: pg_isready -U $$POSTGRES_USER -d $$POSTGRES_DB
+      interval: 5s
+      retries: 20
+
+networks:
+  internal_network_a:
+    internal: true
+    driver: bridge
+    ipam:
+      config:
+        - subnet: 172.21.0.0/16
+          ip_range: 172.21.0.0/24
diff --git a/packages/backend/test-federation/compose.b.yml b/packages/backend/test-federation/compose.b.yml
new file mode 100644
index 0000000000..7dddac905c
--- /dev/null
+++ b/packages/backend/test-federation/compose.b.yml
@@ -0,0 +1,151 @@
+services:
+  b.local:
+    image: nginx:1.27
+    depends_on:
+      misskey.b.local:
+        condition: service_healthy
+    networks:
+      - internal_network_b
+    volumes:
+      - type: bind
+        source: ./.config/b.local.conf
+        target: /etc/nginx/conf.d/b.local.conf
+        read_only: true
+      - type: bind
+        source: ./certificates/b.local.crt
+        target: /etc/nginx/certificates/b.local.crt
+        read_only: true
+      - type: bind
+        source: ./certificates/b.local.key
+        target: /etc/nginx/certificates/b.local.key
+        read_only: true
+      - type: bind
+        source: ./certificates/rootCA.crt
+        target: /etc/nginx/certificates/rootCA.crt
+        read_only: true
+    healthcheck:
+      test: service nginx status
+      interval: 5s
+      retries: 20
+
+  misskey.b.local:
+    image: node:20
+    depends_on:
+      db.b.local:
+        condition: service_healthy
+      redis.local:
+        condition: service_healthy
+      # avoid conflict for installing dependencies
+      misskey.a.local:
+        condition: service_healthy
+    networks:
+      - internal_network_b
+    env_file:
+      - ./.config/docker.env
+    environment:
+      - NODE_ENV=production
+    volumes:
+      - type: bind
+        source: ./.config/default.b.yml
+        target: /misskey/.config/default.yml
+        read_only: true
+      - type: bind
+        source: ../../../built
+        target: /misskey/built
+        read_only: true
+      - type: bind
+        source: ../assets
+        target: /misskey/packages/backend/assets
+        read_only: true
+      - type: bind
+        source: ../built
+        target: /misskey/packages/backend/built
+        read_only: true
+      - type: bind
+        source: ../migration
+        target: /misskey/packages/backend/migration
+        read_only: true
+      - type: bind
+        source: ../ormconfig.js
+        target: /misskey/packages/backend/ormconfig.js
+        read_only: true
+      - type: bind
+        source: ../package.json
+        target: /misskey/packages/backend/package.json
+        read_only: true
+      - type: bind
+        source: ../../misskey-js/built
+        target: /misskey/packages/misskey-js/built
+        read_only: true
+      - type: bind
+        source: ../../misskey-js/package.json
+        target: /misskey/packages/misskey-js/package.json
+        read_only: true
+      - type: bind
+        source: ../../misskey-reversi/built
+        target: /misskey/packages/misskey-reversi/built
+        read_only: true
+      - type: bind
+        source: ../../misskey-reversi/package.json
+        target: /misskey/packages/misskey-reversi/package.json
+        read_only: true
+      - type: bind
+        source: ../../../healthcheck.sh
+        target: /misskey/healthcheck.sh
+        read_only: true
+      - type: bind
+        source: ../../../package.json
+        target: /misskey/package.json
+        read_only: true
+      - type: bind
+        source: ../../../pnpm-lock.yaml
+        target: /misskey/pnpm-lock.yaml
+        read_only: true
+      - type: bind
+        source: ../../../pnpm-workspace.yaml
+        target: /misskey/pnpm-workspace.yaml
+        read_only: true
+      - type: bind
+        source: ./certificates/rootCA.crt
+        target: /usr/local/share/ca-certificates/rootCA.crt
+        read_only: true
+    working_dir: /misskey
+    command: >
+      bash -c "
+        corepack enable && corepack prepare
+        pnpm -F backend i
+        pnpm -F misskey-js i
+        pnpm -F misskey-reversi i
+        pnpm -F backend migrate
+        pnpm -F backend start
+      "
+    healthcheck:
+      test: bash /misskey/healthcheck.sh
+      interval: 5s
+      retries: 20
+
+  db.b.local:
+    image: postgres:15-alpine
+    networks:
+      - internal_network_b
+    env_file:
+      - ./.config/docker.env
+    volumes:
+      - type: bind
+        source: ./volumes/db.b
+        target: /var/lib/postgresql/data
+        bind:
+          create_host_path: true
+    healthcheck:
+      test: "pg_isready -U $$POSTGRES_USER -d $$POSTGRES_DB"
+      interval: 5s
+      retries: 20
+
+networks:
+  internal_network_b:
+    internal: true
+    driver: bridge
+    ipam:
+      config:
+        - subnet: 172.22.0.0/16
+          ip_range: 172.22.0.0/24
diff --git a/packages/backend/test-federation/compose.override.yaml b/packages/backend/test-federation/compose.override.yaml
new file mode 100644
index 0000000000..a35b540ca7
--- /dev/null
+++ b/packages/backend/test-federation/compose.override.yaml
@@ -0,0 +1,99 @@
+services:
+  tester:
+    networks:
+      external_network:
+      internal_network:
+        ipv4_address: $TESTER_IP_ADDRESS
+    volumes:
+      - type: volume
+        source: node_modules
+        target: /misskey/node_modules
+      - type: volume
+        source: node_modules_backend
+        target: /misskey/packages/backend/node_modules
+      - type: volume
+        source: node_modules_misskey-js
+        target: /misskey/packages/misskey-js/node_modules
+
+  daemon:
+    networks:
+      - external_network
+      - internal_network_a
+      - internal_network_b
+    volumes:
+      - type: volume
+        source: node_modules
+        target: /misskey/node_modules
+      - type: volume
+        source: node_modules_backend
+        target: /misskey/packages/backend/node_modules
+
+  redis.local:
+    networks:
+      - internal_network_a
+      - internal_network_b
+
+  a.local:
+    networks:
+      - internal_network
+
+  misskey.a.local:
+    networks:
+      - external_network
+      - internal_network
+    volumes:
+      - type: volume
+        source: node_modules
+        target: /misskey/node_modules
+      - type: volume
+        source: node_modules_backend
+        target: /misskey/packages/backend/node_modules
+      - type: volume
+        source: node_modules_misskey-js
+        target: /misskey/packages/misskey-js/node_modules
+      - type: volume
+        source: node_modules_misskey-reversi
+        target: /misskey/packages/misskey-reversi/node_modules
+
+  b.local:
+    networks:
+      - internal_network
+
+  misskey.b.local:
+    networks:
+      - external_network
+      - internal_network
+    volumes:
+      - type: volume
+        source: node_modules
+        target: /misskey/node_modules
+      - type: volume
+        source: node_modules_backend
+        target: /misskey/packages/backend/node_modules
+      - type: volume
+        source: node_modules_misskey-js
+        target: /misskey/packages/misskey-js/node_modules
+      - type: volume
+        source: node_modules_misskey-reversi
+        target: /misskey/packages/misskey-reversi/node_modules
+
+networks:
+  external_network:
+    driver: bridge
+    ipam:
+      config:
+        - subnet: 172.23.0.0/16
+          ip_range: 172.23.0.0/24
+  internal_network:
+    internal: true
+    driver: bridge
+    ipam:
+      config:
+        - subnet: 172.20.0.0/16
+          ip_range: 172.20.0.0/24
+
+volumes:
+  node_modules:
+  node_modules_backend:
+  node_modules_misskey-js:
+  node_modules_misskey-reversi:
diff --git a/packages/backend/test-federation/compose.yml b/packages/backend/test-federation/compose.yml
new file mode 100644
index 0000000000..27a018847f
--- /dev/null
+++ b/packages/backend/test-federation/compose.yml
@@ -0,0 +1,111 @@
+include:
+  - ./compose.a.yml
+  - ./compose.b.yml
+
+services:
+  tester:
+    image: node:20
+    depends_on:
+      a.local:
+        condition: service_healthy
+      b.local:
+        condition: service_healthy
+    environment:
+      - NODE_ENV=production
+      - NODE_EXTRA_CA_CERTS=/usr/local/share/ca-certificates/rootCA.crt
+    volumes:
+      - type: bind
+        source: ../package.json
+        target: /misskey/packages/backend/package.json
+        read_only: true
+      - type: bind
+        source: ../test/resources
+        target: /misskey/packages/backend/test/resources
+        read_only: true
+      - type: bind
+        source: ./built
+        target: /misskey/packages/backend/test-federation
+        read_only: true
+      - type: bind
+        source: ../../misskey-js/built
+        target: /misskey/packages/misskey-js/built
+        read_only: true
+      - type: bind
+        source: ../../misskey-js/package.json
+        target: /misskey/packages/misskey-js/package.json
+        read_only: true
+      - type: bind
+        source: ../../../package.json
+        target: /misskey/package.json
+        read_only: true
+      - type: bind
+        source: ../../../pnpm-lock.yaml
+        target: /misskey/pnpm-lock.yaml
+        read_only: true
+      - type: bind
+        source: ../../../pnpm-workspace.yaml
+        target: /misskey/pnpm-workspace.yaml
+        read_only: true
+      - type: bind
+        source: ./certificates/rootCA.crt
+        target: /usr/local/share/ca-certificates/rootCA.crt
+        read_only: true
+    working_dir: /misskey
+    command: >
+      bash -c "
+        corepack enable && corepack prepare
+        pnpm -F backend i
+        node --test "./packages/backend/test-federation/test/*.test.js"
+      "
+
+  daemon:
+    image: node:20
+    depends_on:
+      misskey.a.local:
+        condition: service_healthy
+      misskey.b.local:
+        condition: service_healthy
+    environment:
+      - NODE_ENV=production
+      - TESTER_IP_ADDRESS=$TESTER_IP_ADDRESS
+    volumes:
+      - type: bind
+        source: ../package.json
+        target: /misskey/packages/backend/package.json
+        read_only: true
+      - type: bind
+        source: ./built
+        target: /misskey/packages/backend/test-federation
+        read_only: true
+      - type: bind
+        source: ../../../package.json
+        target: /misskey/package.json
+        read_only: true
+      - type: bind
+        source: ../../../pnpm-lock.yaml
+        target: /misskey/pnpm-lock.yaml
+        read_only: true
+      - type: bind
+        source: ../../../pnpm-workspace.yaml
+        target: /misskey/pnpm-workspace.yaml
+        read_only: true
+    working_dir: /misskey
+    command: >
+      bash -c "
+        corepack enable && corepack prepare
+        pnpm -F backend i
+        node ./packages/backend/test-federation/daemon.js
+      "
+
+  redis.local:
+    image: redis:7-alpine
+    volumes:
+      - type: bind
+        source: ./volumes/redis
+        target: /data
+        bind:
+          create_host_path: true
+    healthcheck:
+      test: redis-cli ping
+      interval: 5s
+      retries: 20
diff --git a/packages/backend/test-federation/daemon.ts b/packages/backend/test-federation/daemon.ts
new file mode 100644
index 0000000000..8eb275d4c3
--- /dev/null
+++ b/packages/backend/test-federation/daemon.ts
@@ -0,0 +1,36 @@
+import IPCIDR from 'ip-cidr';
+import { Redis } from 'ioredis';
+
+/**
+ * This should be same as {@link file://./../src/misc/get-ip-hash.ts}.
+ */
+function getIpHash(ip: string) {
+	const prefix = IPCIDR.createAddress(ip).mask(64);
+	return `ip-${BigInt('0b' + prefix).toString(36)}`;
+}
+
+/**
+ * This prevents hitting rate limit when login.
+ */
+export async function purgeLimit(host: string, client: Redis) {
+	const ipHash = getIpHash(process.env.TESTER_IP_ADDRESS!);
+	const key = `${host}:limit:${ipHash}:signin`;
+	const res = await client.zrange(key, 0, -1);
+	if (res.length !== 0) {
+		console.log(`${key} - ${JSON.stringify(res)}`);
+		await client.del(key);
+	}
+}
+
+console.log('Daemon started running');
+
+{
+	const redisClient = new Redis({
+		host: 'redis.local',
+	});
+
+	setInterval(() => {
+		purgeLimit('a.local', redisClient);
+		purgeLimit('b.local', redisClient);
+	}, 1000);
+}
diff --git a/packages/backend/test-federation/eslint.config.js b/packages/backend/test-federation/eslint.config.js
new file mode 100644
index 0000000000..a0f43babad
--- /dev/null
+++ b/packages/backend/test-federation/eslint.config.js
@@ -0,0 +1,22 @@
+import globals from 'globals';
+import tsParser from '@typescript-eslint/parser';
+import sharedConfig from '../../shared/eslint.config.js';
+
+export default [
+	...sharedConfig,
+	{
+		files: ['**/*.ts', '**/*.tsx'],
+		languageOptions: {
+			globals: {
+				...globals.node,
+				...globals.jest,
+			},
+			parserOptions: {
+				parser: tsParser,
+				project: ['./tsconfig.json'],
+				sourceType: 'module',
+				tsconfigRootDir: import.meta.dirname,
+			},
+		},
+	},
+];
diff --git a/packages/backend/test-federation/generate_certificates.sh b/packages/backend/test-federation/generate_certificates.sh
new file mode 100644
index 0000000000..eae68ba839
--- /dev/null
+++ b/packages/backend/test-federation/generate_certificates.sh
@@ -0,0 +1,32 @@
+#!/bin/bash
+mkdir certificates
+
+# rootCA
+openssl genrsa -des3 \
+  -passout pass:rootCA \
+  -out certificates/rootCA.key 4096
+openssl req -x509 -new -nodes -batch \
+  -key certificates/rootCA.key \
+  -sha256 \
+  -days 1024 \
+  -passin pass:rootCA \
+  -out certificates/rootCA.crt
+
+# domain
+function generate {
+  openssl req -new -newkey rsa:2048 -sha256 -nodes \
+    -keyout certificates/$1.key \
+    -subj "/CN=$1/emailAddress=admin@$1/C=JP/ST=/L=/O=Misskey Tester/OU=Some Unit" \
+    -out certificates/$1.csr
+  openssl x509 -req -sha256 \
+    -in certificates/$1.csr \
+    -CA certificates/rootCA.crt \
+    -CAkey certificates/rootCA.key \
+    -CAcreateserial \
+    -passin pass:rootCA \
+    -out certificates/$1.crt \
+    -days 500
+}
+
+generate a.local
+generate b.local
diff --git a/packages/backend/test-federation/test/drive.test.ts b/packages/backend/test-federation/test/drive.test.ts
new file mode 100644
index 0000000000..892d75488b
--- /dev/null
+++ b/packages/backend/test-federation/test/drive.test.ts
@@ -0,0 +1,97 @@
+import { deepEqual, deepStrictEqual, strictEqual } from 'node:assert';
+import test, { describe } from 'node:test';
+import * as Misskey from 'misskey-js';
+import { createAccount, fetchAdmin, uploadFile } from './utils.js';
+
+const [
+	[, aAdminClient],
+	[, bAdminClient],
+] = await Promise.all([
+	fetchAdmin('a.local'),
+	fetchAdmin('b.local'),
+]);
+
+describe('Drive', () => {
+	describe('Upload image in a.local and resolve from b.local', async () => {
+		const [uploader, uploaderClient] = await createAccount('a.local', aAdminClient);
+
+		const image = await uploadFile('a.local', '../../test/resources/192.jpg', uploader.i);
+		const noteWithImage = (await uploaderClient.request('notes/create', { fileIds: [image.id] })).createdNote;
+		const uri = `https://a.local/notes/${noteWithImage.id}`;
+		const noteInBServer = await (async (): Promise<Misskey.entities.ApShowResponse & { type: 'Note' }> => {
+			const resolved = await bAdminClient.request('ap/show', { uri });
+			strictEqual(resolved.type, 'Note');
+			return resolved;
+		})();
+		deepEqual(noteInBServer.object.uri, uri);
+		deepEqual(noteInBServer.object.files != null, true);
+		deepEqual(noteInBServer.object.files!.length, 1);
+		const imageInBServer = noteInBServer.object.files![0];
+
+		await test('Check consistency of DriveFile', () => {
+			// console.log(`a.local: ${JSON.stringify(image, null, '\t')}`);
+			// console.log(`b.local: ${JSON.stringify(imageInBServer, null, '\t')}`);
+
+			const toBeDeleted: (keyof Misskey.entities.DriveFile)[] = [
+				'id',
+				'createdAt',
+				'size',
+				'url',
+				'thumbnailUrl',
+				'userId',
+			];
+			const _Image: Partial<Misskey.entities.DriveFile> = structuredClone(image);
+			const _ImageInBServer: Partial<Misskey.entities.DriveFile> = structuredClone(imageInBServer);
+
+			for (const image of [_Image, _ImageInBServer]) {
+				for (const field of toBeDeleted) {
+					delete image[field];
+				}
+			}
+
+			deepStrictEqual(_Image, _ImageInBServer);
+		});
+
+		const updatedImage = await uploaderClient.request('drive/files/update', {
+			fileId: image.id,
+			name: 'updated_192.jpg',
+			isSensitive: true,
+		});
+
+		const updatedImageInBServer = await bAdminClient.request('drive/files/show', {
+			fileId: imageInBServer.id,
+		});
+
+		await test('Update', async () => {
+			// console.log(`a.local: ${JSON.stringify(updatedImage, null, '\t')}`);
+			// console.log(`b.local: ${JSON.stringify(updatedImageInBServer, null, '\t')}`);
+
+			// FIXME: not updated with `drive/files/update`
+			deepEqual(updatedImage.isSensitive, true);
+			deepEqual(updatedImage.name, 'updated_192.jpg');
+			deepEqual(updatedImageInBServer.isSensitive, false);
+			deepEqual(updatedImageInBServer.name, '192.jpg');
+		});
+
+		const noteWithUpdatedImage = (await uploaderClient.request('notes/create', { fileIds: [updatedImage.id] })).createdNote;
+		const uriUpdated = `https://a.local/notes/${noteWithUpdatedImage.id}`;
+		const noteWithUpdatedImageInBServer = await (async (): Promise<Misskey.entities.ApShowResponse & { type: 'Note' }> => {
+			const resolved = await bAdminClient.request('ap/show', { uri: uriUpdated });
+			strictEqual(resolved.type, 'Note');
+			return resolved;
+		})();
+		deepEqual(noteWithUpdatedImageInBServer.object.uri, uriUpdated);
+		deepEqual(noteWithUpdatedImageInBServer.object.files != null, true);
+		deepEqual(noteWithUpdatedImageInBServer.object.files!.length, 1);
+		const reupdatedImageInBServer = noteWithUpdatedImageInBServer.object.files![0];
+
+		await test('Re-update with attaching to Note', async () => {
+			// console.log(`b.local: ${JSON.stringify(reupdatedImageInBServer, null, '\t')}`);
+
+			// `isSensitive` is updated
+			deepEqual(reupdatedImageInBServer.isSensitive, true);
+			// FIXME: but `name` is not updated
+			deepEqual(reupdatedImageInBServer.name, '192.jpg');
+		});
+	});
+});
diff --git a/packages/backend/test-federation/test/user.test.ts b/packages/backend/test-federation/test/user.test.ts
new file mode 100644
index 0000000000..1e691d1852
--- /dev/null
+++ b/packages/backend/test-federation/test/user.test.ts
@@ -0,0 +1,129 @@
+import { deepEqual, deepStrictEqual, strictEqual } from 'node:assert';
+import test, { before, describe } from 'node:test';
+import * as Misskey from 'misskey-js';
+import { createAccount, fetchAdmin, resolveRemoteAccount } from './utils.js';
+
+const [
+	[, aAdminClient],
+	[, bAdminClient],
+] = await Promise.all([
+	fetchAdmin('a.local'),
+	fetchAdmin('b.local'),
+]);
+
+describe('User', () => {
+	describe('Profile', async () => {
+		describe('Consistency of profile', async () => {
+			const [alice] = await createAccount('a.local', aAdminClient);
+			const [
+				[, aliceWatcherClient],
+				[, aliceWatcherInBServerClient],
+			] = await Promise.all([
+				createAccount('a.local', aAdminClient),
+				createAccount('b.local', bAdminClient),
+			]);
+
+			const aliceInAServer = await aliceWatcherClient.request('users/show', { userId: alice.id });
+
+			const resolved = await (async (): Promise<Misskey.entities.ApShowResponse & { type: 'User' }> => {
+				const resolved = await aliceWatcherInBServerClient.request('ap/show', {
+					uri: `https://a.local/@${aliceInAServer.username}`,
+				});
+				strictEqual(resolved.type, 'User');
+				return resolved;
+			})();
+
+			const aliceInBServer = await aliceWatcherInBServerClient.request('users/show', { userId: resolved.object.id });
+
+			// console.log(`a.local: ${JSON.stringify(aliceInAServer, null, '\t')}`);
+			// console.log(`b.local: ${JSON.stringify(aliceInBServer, null, '\t')}`);
+
+			const toBeDeleted: (keyof Misskey.entities.UserDetailedNotMe)[] = [
+				'id',
+				'host',
+				'avatarUrl',
+				'instance',
+				'badgeRoles',
+				'url',
+				'uri',
+				'createdAt',
+				'lastFetchedAt',
+				'publicReactions',
+			];
+			const _aliceInAServer: Partial<Misskey.entities.UserDetailedNotMe> = structuredClone(aliceInAServer);
+			const _aliceInBServer: Partial<Misskey.entities.UserDetailedNotMe> = structuredClone(aliceInBServer);
+			for (const alice of [_aliceInAServer, _aliceInBServer]) {
+				for (const field of toBeDeleted) {
+					delete alice[field];
+				}
+			}
+
+			deepStrictEqual(_aliceInAServer, _aliceInBServer);
+		});
+	});
+
+	describe('Follow / Unfollow', async () => {
+		const [alice, aliceClient, { username: aliceUsername }] = await createAccount('a.local', aAdminClient);
+		const [bob, bobClient, { username: bobUsername }] = await createAccount('b.local', bAdminClient);
+
+		const aliceAcct = `@${aliceUsername}@a.local`;
+		const bobAcct = `@${bobUsername}@b.local`;
+
+		const [bobInAServer, aliceInBServer] = await Promise.all([
+			resolveRemoteAccount(aliceAcct, bobAcct, aliceClient),
+			resolveRemoteAccount(bobAcct, aliceAcct, bobClient),
+		]);
+
+		await describe('Follow a.local ==> b.local', async () => {
+			before(async () => {
+				console.log(`Following ${bobAcct} from ${aliceAcct} ...`);
+				await aliceClient.request('following/create', { userId: bobInAServer.object.id });
+				console.log(`Followed ${bobAcct} from ${aliceAcct}`);
+
+				// wait for 1 secound
+				await new Promise(resolve => setTimeout(resolve, 1000));
+			});
+
+			test('Check consistency with `users/following` and `users/followers` endpoints', async () => {
+				await Promise.all([
+					deepEqual(
+						(await aliceClient.request('users/following', { userId: alice.id }))
+							.some(v => v.followeeId === bobInAServer.object.id),
+						true,
+					),
+					deepEqual(
+						(await bobClient.request('users/followers', { userId: bob.id }))
+							.some(v => v.followerId === aliceInBServer.object.id),
+						true,
+					),
+				]);
+			});
+		});
+
+		await describe('Unfollow a.local ==> b.local', async () => {
+			before(async () => {
+				console.log(`Unfollowing ${bobAcct} from ${aliceAcct} ...`);
+				await aliceClient.request('following/delete', { userId: bobInAServer.object.id });
+				console.log(`Unfollowed ${bobAcct} from ${aliceAcct}`);
+
+				// wait for 1 secound
+				await new Promise(resolve => setTimeout(resolve, 1000));
+			});
+
+			test('Check consistency with `users/following` and `users/followers` endpoints', async () => {
+				await Promise.all([
+					deepEqual(
+						(await aliceClient.request('users/following', { userId: alice.id }))
+							.some(v => v.followeeId === bobInAServer.object.id),
+						false,
+					),
+					deepEqual(
+						(await bobClient.request('users/followers', { userId: bob.id }))
+							.some(v => v.followerId === aliceInBServer.object.id),
+						false,
+					),
+				]);
+			});
+		});
+	});
+});
diff --git a/packages/backend/test-federation/test/utils.ts b/packages/backend/test-federation/test/utils.ts
new file mode 100644
index 0000000000..77a915ae35
--- /dev/null
+++ b/packages/backend/test-federation/test/utils.ts
@@ -0,0 +1,137 @@
+import { strictEqual } from 'assert';
+import { readFile } from 'fs/promises';
+import { dirname, join } from 'path';
+import { fileURLToPath } from 'url';
+import * as Misskey from 'misskey-js';
+import { SwitchCaseResponseType } from 'misskey-js/api.types.js';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+
+/** used for avoiding overload and some endpoints */
+type Request = <E extends keyof Misskey.Endpoints, P extends Misskey.Endpoints[E]['req']>(
+	endpoint: E, params: P, credential?: string | null
+) => Promise<SwitchCaseResponseType<E, P>>;
+
+export const ADMIN_PARAMS = { username: 'admin', password: 'admin' };
+
+export async function signin(host: string, params: Misskey.entities.SigninRequest): Promise<Misskey.entities.SigninResponse> {
+	// wait for a second to prevent hit rate limit
+	await new Promise(resolve => setTimeout(resolve, 1000));
+	console.log(`Sign in to @${params.username}@${host} ...`);
+	return await (new Misskey.api.APIClient({
+		origin: `https://${host}`,
+		fetch: (input, init) => fetch(input, {
+			...init,
+			headers: {
+				...init?.headers,
+				'Content-Type': init?.headers['Content-Type'] != null ? init.headers['Content-Type'] : 'application/json',
+			},
+		}),
+	}).request as Request)('signin', params)
+		.then(res => {
+			console.log(`Signed in to @${params.username}@${host}`);
+			return res;
+		})
+		.catch(async err => {
+			if (err.id === '22d05606-fbcf-421a-a2db-b32610dcfd1b') {
+				await new Promise(resolve => setTimeout(resolve, Math.random() * 5000));
+				return await signin(host, params);
+			}
+			throw err;
+		});
+}
+
+async function createAdmin(host: string): Promise<Misskey.entities.SignupResponse | undefined> {
+	const client = new Misskey.api.APIClient({ origin: `https://${host}` });
+	return await client.request('admin/accounts/create', ADMIN_PARAMS).then(res => {
+		console.log(`Successfully created admin account: @${ADMIN_PARAMS.username}@${host}`);
+		return res as Misskey.entities.SignupResponse;
+	}).then(async res => {
+		await client.request('admin/roles/update-default-policies', {
+			policies: {
+				rateLimitFactor: 0 as never,
+			},
+		}, res.token);
+		return res;
+	}).catch(err => {
+		if (err.info.e.message === 'access denied') {
+			console.log(`Admin account already exists: @${ADMIN_PARAMS.username}@${host}`);
+			return undefined;
+		}
+		throw err;
+	});
+}
+
+export async function fetchAdmin(host: string): Promise<[Misskey.entities.SigninResponse, Misskey.api.APIClient]> {
+	const admin = await signin(host, ADMIN_PARAMS)
+		.catch(async err => {
+			if (err.id === '6cc579cc-885d-43d8-95c2-b8c7fc963280') {
+				await createAdmin(host);
+				return await signin(host, ADMIN_PARAMS);
+			} else if (err.id === '22d05606-fbcf-421a-a2db-b32610dcfd1b') {
+				return await signin(host, ADMIN_PARAMS);
+			}
+			throw err;
+		});
+
+	return [admin, new Misskey.api.APIClient({ origin: `https://${host}`, credential: admin.i })];
+}
+
+export async function createAccount(host: string, adminClient: Misskey.api.APIClient): Promise<[Misskey.entities.SigninResponse, Misskey.api.APIClient, { username: string; password: string }]> {
+	const username = crypto.randomUUID().replaceAll('-', '').substring(0, 20);
+	const password = crypto.randomUUID().replaceAll('-', '');
+	await adminClient.request('admin/accounts/create', { username, password });
+	console.log(`Created an account: @${username}@${host}`);
+	const signinRes = await signin(host, { username, password });
+
+	return [
+		signinRes,
+		new Misskey.api.APIClient({ origin: `https://${host}`, credential: signinRes.i }),
+		{ username, password },
+	];
+}
+
+function parseAcct(acct: string): { username: string; host: string | null } {
+	const split = (acct.startsWith('@') ? acct.substring(1) : acct).split('@', 2);
+	return { username: split[0], host: split[1] ?? null };
+}
+
+export async function resolveRemoteAccount(from_acct: string, to_acct: string, fromClient?: Misskey.api.APIClient): Promise<Misskey.entities.ApShowResponse & { type: 'User' }> {
+	const [from, to] = [parseAcct(from_acct), parseAcct(to_acct)];
+	const fromAdminClient: Misskey.api.APIClient = fromClient ?? (await fetchAdmin(from.username))[1];
+
+	return new Promise<Misskey.entities.ApShowResponse & { type: 'User' }>((resolve, reject) => {
+		console.log(`Resolving @${to.username}@${to.host} from @${from.username}@${from.host} ...`);
+		fromAdminClient.request('ap/show', { uri: `https://${to.host}/@${to.username}` })
+			.then(res => {
+				console.log(`Resolved @${to.username}@${to.host} from @${from.username}@${from.host}`);
+				strictEqual(res.type, 'User');
+				strictEqual(res.object.url, `https://${to.host}/@${to.username}`);
+				resolve(res);
+			})
+			.catch(err => reject(err));
+	});
+}
+
+export async function uploadFile(host: string, path: string, token: string): Promise<Misskey.entities.DriveFile> {
+	const filename = path.split('/').pop() ?? 'untitled';
+	const blob = new Blob([await readFile(join(__dirname, path))]);
+
+	const body = new FormData();
+	body.append('i', token);
+	body.append('force', 'true');
+	body.append('file', blob);
+	body.append('name', filename);
+
+	return new Promise<Misskey.entities.DriveFile>((resolve, reject) => {
+		fetch(`https://${host}/api/drive/files/create`, {
+			method: 'POST',
+			body,
+		}).then(async res => {
+			resolve(await res.json());
+		}).catch(err => {
+			reject(err);
+		});
+	});
+}
diff --git a/packages/backend/test-federation/tsconfig.json b/packages/backend/test-federation/tsconfig.json
new file mode 100644
index 0000000000..3a1cb3b9f3
--- /dev/null
+++ b/packages/backend/test-federation/tsconfig.json
@@ -0,0 +1,114 @@
+{
+	"compilerOptions": {
+		/* Visit https://aka.ms/tsconfig to read more about this file */
+
+		/* Projects */
+		// "incremental": true,                              /* Save .tsbuildinfo files to allow for incremental compilation of projects. */
+		// "composite": true,                                /* Enable constraints that allow a TypeScript project to be used with project references. */
+		// "tsBuildInfoFile": "./.tsbuildinfo",              /* Specify the path to .tsbuildinfo incremental compilation file. */
+		// "disableSourceOfProjectReferenceRedirect": true,  /* Disable preferring source files instead of declaration files when referencing composite projects. */
+		// "disableSolutionSearching": true,                 /* Opt a project out of multi-project reference checking when editing. */
+		// "disableReferencedProjectLoad": true,             /* Reduce the number of projects loaded automatically by TypeScript. */
+
+		/* Language and Environment */
+		"target": "ESNext",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
+		// "lib": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
+		// "jsx": "preserve",                                /* Specify what JSX code is generated. */
+		// "experimentalDecorators": true,                   /* Enable experimental support for legacy experimental decorators. */
+		// "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */
+		// "jsxFactory": "",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
+		// "jsxFragmentFactory": "",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
+		// "jsxImportSource": "",                            /* Specify module specifier used to import the JSX factory functions when using 'jsx: react-jsx*'. */
+		// "reactNamespace": "",                             /* Specify the object invoked for 'createElement'. This only applies when targeting 'react' JSX emit. */
+		// "noLib": true,                                    /* Disable including any library files, including the default lib.d.ts. */
+		// "useDefineForClassFields": true,                  /* Emit ECMAScript-standard-compliant class fields. */
+		// "moduleDetection": "auto",                        /* Control what method is used to detect module-format JS files. */
+
+		/* Modules */
+		"module": "NodeNext",                                /* Specify what module code is generated. */
+		// "rootDir": "./",                                  /* Specify the root folder within your source files. */
+		// "moduleResolution": "node10",                     /* Specify how TypeScript looks up a file from a given module specifier. */
+		// "baseUrl": "./",                                  /* Specify the base directory to resolve non-relative module names. */
+		// "paths": {},                                      /* Specify a set of entries that re-map imports to additional lookup locations. */
+		// "rootDirs": [],                                   /* Allow multiple folders to be treated as one when resolving modules. */
+		// "typeRoots": [],                                  /* Specify multiple folders that act like './node_modules/@types'. */
+		// "types": [],                                      /* Specify type package names to be included without being referenced in a source file. */
+		// "allowUmdGlobalAccess": true,                     /* Allow accessing UMD globals from modules. */
+		// "moduleSuffixes": [],                             /* List of file name suffixes to search when resolving a module. */
+		// "allowImportingTsExtensions": true,               /* Allow imports to include TypeScript file extensions. Requires '--moduleResolution bundler' and either '--noEmit' or '--emitDeclarationOnly' to be set. */
+		// "resolvePackageJsonExports": true,                /* Use the package.json 'exports' field when resolving package imports. */
+		// "resolvePackageJsonImports": true,                /* Use the package.json 'imports' field when resolving imports. */
+		// "customConditions": [],                           /* Conditions to set in addition to the resolver-specific defaults when resolving imports. */
+		// "noUncheckedSideEffectImports": true,             /* Check side effect imports. */
+		// "resolveJsonModule": true,                        /* Enable importing .json files. */
+		// "allowArbitraryExtensions": true,                 /* Enable importing files with any extension, provided a declaration file is present. */
+		// "noResolve": true,                                /* Disallow 'import's, 'require's or '<reference>'s from expanding the number of files TypeScript should add to a project. */
+
+		/* JavaScript Support */
+		// "allowJs": true,                                  /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */
+		// "checkJs": true,                                  /* Enable error reporting in type-checked JavaScript files. */
+		// "maxNodeModuleJsDepth": 1,                        /* Specify the maximum folder depth used for checking JavaScript files from 'node_modules'. Only applicable with 'allowJs'. */
+
+		/* Emit */
+		// "declaration": true,                              /* Generate .d.ts files from TypeScript and JavaScript files in your project. */
+		// "declarationMap": true,                           /* Create sourcemaps for d.ts files. */
+		// "emitDeclarationOnly": true,                      /* Only output d.ts files and not JavaScript files. */
+		// "sourceMap": true,                                /* Create source map files for emitted JavaScript files. */
+		// "inlineSourceMap": true,                          /* Include sourcemap files inside the emitted JavaScript. */
+		// "noEmit": true,                                   /* Disable emitting files from a compilation. */
+		// "outFile": "./",                                  /* Specify a file that bundles all outputs into one JavaScript file. If 'declaration' is true, also designates a file that bundles all .d.ts output. */
+		"outDir": "./built",                                 /* Specify an output folder for all emitted files. */
+		// "removeComments": true,                           /* Disable emitting comments. */
+		// "importHelpers": true,                            /* Allow importing helper functions from tslib once per project, instead of including them per-file. */
+		// "downlevelIteration": true,                       /* Emit more compliant, but verbose and less performant JavaScript for iteration. */
+		// "sourceRoot": "",                                 /* Specify the root path for debuggers to find the reference source code. */
+		// "mapRoot": "",                                    /* Specify the location where debugger should locate map files instead of generated locations. */
+		// "inlineSources": true,                            /* Include source code in the sourcemaps inside the emitted JavaScript. */
+		// "emitBOM": true,                                  /* Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files. */
+		// "newLine": "crlf",                                /* Set the newline character for emitting files. */
+		// "stripInternal": true,                            /* Disable emitting declarations that have '@internal' in their JSDoc comments. */
+		// "noEmitHelpers": true,                            /* Disable generating custom helper functions like '__extends' in compiled output. */
+		// "noEmitOnError": true,                            /* Disable emitting files if any type checking errors are reported. */
+		// "preserveConstEnums": true,                       /* Disable erasing 'const enum' declarations in generated code. */
+		// "declarationDir": "./",                           /* Specify the output directory for generated declaration files. */
+
+		/* Interop Constraints */
+		// "isolatedModules": true,                          /* Ensure that each file can be safely transpiled without relying on other imports. */
+		// "verbatimModuleSyntax": true,                     /* Do not transform or elide any imports or exports not marked as type-only, ensuring they are written in the output file's format based on the 'module' setting. */
+		// "isolatedDeclarations": true,                     /* Require sufficient annotation on exports so other tools can trivially generate declaration files. */
+		// "allowSyntheticDefaultImports": true,             /* Allow 'import x from y' when a module doesn't have a default export. */
+		"esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */
+		// "preserveSymlinks": true,                         /* Disable resolving symlinks to their realpath. This correlates to the same flag in node. */
+		"forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */
+
+		/* Type Checking */
+		"strict": true,                                      /* Enable all strict type-checking options. */
+		// "noImplicitAny": true,                            /* Enable error reporting for expressions and declarations with an implied 'any' type. */
+		// "strictNullChecks": true,                         /* When type checking, take into account 'null' and 'undefined'. */
+		// "strictFunctionTypes": true,                      /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */
+		// "strictBindCallApply": true,                      /* Check that the arguments for 'bind', 'call', and 'apply' methods match the original function. */
+		// "strictPropertyInitialization": true,             /* Check for class properties that are declared but not set in the constructor. */
+		// "strictBuiltinIteratorReturn": true,              /* Built-in iterators are instantiated with a 'TReturn' type of 'undefined' instead of 'any'. */
+		// "noImplicitThis": true,                           /* Enable error reporting when 'this' is given the type 'any'. */
+		// "useUnknownInCatchVariables": true,               /* Default catch clause variables as 'unknown' instead of 'any'. */
+		// "alwaysStrict": true,                             /* Ensure 'use strict' is always emitted. */
+		// "noUnusedLocals": true,                           /* Enable error reporting when local variables aren't read. */
+		// "noUnusedParameters": true,                       /* Raise an error when a function parameter isn't read. */
+		// "exactOptionalPropertyTypes": true,               /* Interpret optional property types as written, rather than adding 'undefined'. */
+		// "noImplicitReturns": true,                        /* Enable error reporting for codepaths that do not explicitly return in a function. */
+		// "noFallthroughCasesInSwitch": true,               /* Enable error reporting for fallthrough cases in switch statements. */
+		// "noUncheckedIndexedAccess": true,                 /* Add 'undefined' to a type when accessed using an index. */
+		// "noImplicitOverride": true,                       /* Ensure overriding members in derived classes are marked with an override modifier. */
+		// "noPropertyAccessFromIndexSignature": true,       /* Enforces using indexed accessors for keys declared using an indexed type. */
+		// "allowUnusedLabels": true,                        /* Disable error reporting for unused labels. */
+		// "allowUnreachableCode": true,                     /* Disable error reporting for unreachable code. */
+
+		/* Completeness */
+		// "skipDefaultLibCheck": true,                      /* Skip type checking .d.ts files that are included with TypeScript. */
+		"skipLibCheck": true                                 /* Skip type checking all .d.ts files. */
+	},
+	"include": [
+		"daemon.ts",
+		"./test/**/*.ts"
+	]
+}