Admin API & Web Interface

The admin API plugin exposes a REST API and an embedded web dashboard for managing your Infrarust proxy over HTTP. You can list players, kick or move them between servers, manage bans, check server health, reload configuration, and stream live events and logs — all without touching the Minecraft client or the terminal.

The plugin is always compiled into the binary. It activates when a [web] section is present in infrarust.toml.

Enabling the plugin

Add a [web] section to your infrarust.toml:

[web]

That's it. All three fields have defaults:

Option	Type	Default	Description
enable_api	bool	true	Start the REST API
enable_webui	bool	true	Serve the embedded web dashboard
listen_port	u16	8080	Port the HTTP server binds to

To change the port or disable the web UI while keeping the API:

[web]
listen_port = 9090
enable_webui = false

On first start, the plugin generates plugins/admin_api/config.toml with a random API key. You'll see it in the logs:

INFO Generated admin API key: a1b2c3d4-e5f6-7890-abcd-ef1234567890
INFO Config written to plugins/admin_api/config.toml

WARNING

Save your API key somewhere safe. It is the only credential protecting the admin API.

Plugin configuration

The plugin reads its own config from plugins/admin_api/config.toml:

bind = "127.0.0.1:8080"

# API key for authentication (auto-generated, min 16 characters)
api_key = "a1b2c3d4-e5f6-7890-abcd-ef1234567890"

# CORS origins for the web dashboard (empty = no CORS headers)
# cors_origins = ["http://localhost:3000"]

# Rate limiting for authenticated endpoints
# [rate_limit]
# requests_per_minute = 60

Option	Type	Default	Description
bind	string	"127.0.0.1:8080"	Address the HTTP server listens on
api_key	string	(auto-generated)	Bearer token for authentication. Must be at least 16 characters.
cors_origins	string[]	[]	Allowed CORS origins. Empty means no CORS headers are sent.
rate_limit.requests_per_minute	u64	60	Maximum requests per minute per client on authenticated endpoints

DANGER

Do not expose the admin API to the public internet without a reverse proxy or firewall. The default bind address 127.0.0.1 restricts access to the local machine.

Authentication

All endpoints except GET /api/v1/health require a Bearer token in the Authorization header:

curl -H "Authorization: Bearer YOUR_API_KEY" http://127.0.0.1:8080/api/v1/proxy

The token is compared using constant-time verification to prevent timing attacks.

SSE authentication

Server-Sent Events endpoints (/api/v1/events, /api/v1/logs) cannot use the Authorization header because the browser EventSource API does not support custom headers. These endpoints authenticate via a token query parameter instead:

GET /api/v1/events?token=YOUR_API_KEY&types=player.join,player.leave

Rate limiting

Authenticated endpoints are rate-limited to requests_per_minute (default 60). The health endpoint is exempt.

Response headers on every authenticated request:

Header	Description
X-RateLimit-Limit	Allowed requests per minute
X-RateLimit-Remaining	Remaining requests in the current window
X-RateLimit-Reset	Seconds until the window resets

When the limit is exceeded, the API returns 429 Too Many Requests with a Retry-After header.

API reference

All responses follow a consistent format:

Success

{
  "data": { ... }
}

Paginated

{
  "data": [ ... ],
  "meta": {
    "total": 42,
    "page": 1,
    "per_page": 20,
    "total_pages": 3
  }
}

Error

{
  "error": {
    "code": "NOT_FOUND",
    "message": "Player 'Steve' not found"
  }
}

Paginated endpoints accept ?page=1&per_page=20 query parameters. Maximum per_page is 100.

Public endpoints

Method	Path	Description
GET	/api/v1/health	Health check. Returns {"status": "ok"}. No auth required.

Proxy

Method	Path	Description
GET	/api/v1/proxy	Proxy status: version, uptime, player count, server count, features, memory usage
POST	/api/v1/proxy/shutdown	Graceful proxy shutdown
POST	/api/v1/proxy/gc	Trigger garbage collection (no-op in Rust, returns success)

Players

Method	Path	Description
GET	/api/v1/players	List online players (paginated, filterable by server and mode)
GET	/api/v1/players/count	Player count grouped by server and proxy mode
GET	/api/v1/players/{id_or_username}	Get a specific player's details
POST	/api/v1/players/broadcast	Broadcast a message to all online players
POST	/api/v1/players/{username}/kick	Kick a player
POST	/api/v1/players/{username}/send	Transfer a player to another server
POST	/api/v1/players/{username}/message	Send a chat message to a player

Servers

Method	Path	Description
GET	/api/v1/servers	List all configured servers
GET	/api/v1/servers/{id}	Get a server's configuration and state
POST	/api/v1/servers	Create a server (API-managed, stored in plugins/admin_api/servers.json)
PUT	/api/v1/servers/{id}	Update a server's configuration
DELETE	/api/v1/servers/{id}	Delete an API-managed server
POST	/api/v1/servers/{id}/start	Start a server
POST	/api/v1/servers/{id}/stop	Stop a server
GET	/api/v1/servers/{id}/health	Real-time health check (pings the Minecraft server, 5s timeout)
GET	/api/v1/servers/{id}/health/cached	Last cached health check result

Bans

Method	Path	Description
GET	/api/v1/bans	List all bans (paginated)
GET	/api/v1/bans/check/{target_type}/{value}	Check if a username, UUID, or IP is banned
POST	/api/v1/bans	Create a ban. Target types: username, uuid, ip
DELETE	/api/v1/bans/{target_type}/{value}	Remove a ban

Plugins

Method	Path	Description
GET	/api/v1/plugins	List all loaded plugins
GET	/api/v1/plugins/{id}	Get a specific plugin's info
POST	/api/v1/plugins/{id}/enable	Enable a plugin
POST	/api/v1/plugins/{id}/disable	Disable a plugin

Configuration

Method	Path	Description
GET	/api/v1/config/providers	List active configuration providers
POST	/api/v1/config/reload	Reload proxy configuration from disk

Statistics

Method	Path	Description
GET	/api/v1/stats	Overview: players online, servers total, uptime, breakdowns by server and state
GET	/api/v1/events/recent	Last 100 activity events (excludes stats ticks)

Logs

Method	Path	Description
GET	/api/v1/logs/history	Recent log entries from the ring buffer. Query: ?n=100&level=warn&target=infrarust_core

Server-Sent Events (SSE)

Two streaming endpoints provide real-time data without polling. Both use query-parameter authentication.

Event stream

GET /api/v1/events?token=YOUR_API_KEY&types=player.join,player.leave

Available event types:

Event type	Fired when
player.join	A player connects
player.leave	A player disconnects
player.switch	A player moves between servers
server.state_change	A server's state changes
config.reload	Configuration is reloaded
ban.created	A ban is created
ban.removed	A ban is removed
stats.tick	Periodic stats snapshot (every 5 seconds)

Omit the types parameter to receive all events. The stream sends a keep-alive comment every 15 seconds.

Log stream

GET /api/v1/logs?token=YOUR_API_KEY&level=warn&target=infrarust_core

Streams log entries in real time. Filter by minimum level (trace, debug, info, warn, error) and target module prefix.

Web dashboard

When enable_webui is true, the plugin serves an embedded web frontend at the root URL (http://127.0.0.1:8080/). The frontend is a Nuxt SPA bundled into the binary at compile time.

Non-API routes serve static files from the embedded bundle. If a requested file doesn't exist, the server returns index.html for client-side routing. API routes (/api/*) that don't match a defined endpoint return 404.

Cache headers:

Path pattern	Cache-Control
_nuxt/*	public, max-age=31536000, immutable
index.html, 200.html	no-cache
Other static files	public, max-age=3600

Example: list online players

curl -s \
  -H "Authorization: Bearer $(cat plugins/admin_api/config.toml | grep api_key | cut -d'"' -f2)" \
  http://127.0.0.1:8080/api/v1/players | jq

{
  "data": [
    {
      "id": 1,
      "username": "Steve",
      "uuid": "069a79f4-44e9-4726-a5be-fca90e38aaf5",
      "server": "survival",
      "proxy_mode": "client_only",
      "connected_at": "2025-01-15T10:30:00Z"
    }
  ],
  "meta": {
    "total": 1,
    "page": 1,
    "per_page": 20,
    "total_pages": 1
  }
}

Example: kick a player

curl -X POST \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"reason": "Server maintenance"}' \
  http://127.0.0.1:8080/api/v1/players/Steve/kick

Example: subscribe to events

const events = new EventSource(
  'http://127.0.0.1:8080/api/v1/events?token=YOUR_API_KEY&types=player.join,player.leave'
);

events.addEventListener('player.join', (e) => {
  const data = JSON.parse(e.data);
  console.log(`${data.username} joined ${data.server}`);
});

events.addEventListener('player.leave', (e) => {
  const data = JSON.parse(e.data);
  console.log(`${data.username} left`);
});