API Overview

Nearly every interaction between the Lamaste management UI and the backend happens through a JSON REST API protected by mTLS client certificates. The exceptions are the invitation acceptance flow (/api/invite/*) and the agent enrollment endpoint (/api/enroll), which are public.

In Plain English

When you open the Lamaste management panel in your browser, the page you see is a single-page application (SPA) built with React. Every button you click — creating a tunnel, adding a user, renewing a certificate — sends a request to the panel server's REST API running on the same machine. The server processes the request, makes changes to the system (writing config files, reloading services), and sends back a JSON response.

The API sits behind nginx, which enforces mTLS on the panel vhost — meaning your browser must present a valid client certificate before the connection is even established. Without that certificate, the TLS handshake fails and no HTTP traffic reaches the API at all.

There are two exceptions to the mTLS requirement. The /api/invite/* routes are registered in a public context without mTLS middleware, so that invited users can accept their invitation and set a password without needing a client certificate. The /api/enroll endpoint is also public, allowing agents to complete hardware-bound certificate enrollment using a token previously generated by an admin.

Base URL

The API is served by the Fastify panel server at 127.0.0.1:3100. In production, nginx reverse-proxies to this address. You never call port 3100 directly — all requests go through nginx on port 9292.

https://<droplet-ip>:9292/api/...

If a domain has been configured and provisioned:

https://panel.<your-domain>/api/...

Both URLs reach the same server. The IP-based URL always works, even if DNS is misconfigured.

Authentication

mTLS Client Certificates

All API endpoints except /api/invite/* and /api/enroll require a valid mTLS client certificate. nginx verifies the certificate at the TLS layer and forwards the result to the panel server via the X-SSL-Client-Verify header.

Browser ──HTTPS + client cert──▶ nginx (port 9292)
  nginx checks ssl_client_verify
    ✓ SUCCESS → proxies to 127.0.0.1:3100 with X-SSL-Client-Verify: SUCCESS
    ✗ FAILED  → TLS handshake rejected, no HTTP traffic reaches the API

In development mode (NODE_ENV=development), the mTLS check is bypassed. A warning is logged once on startup.

Rejection response (403):

{
  "error": "mTLS certificate required",
  "details": {
    "hint": "Access to the Lamaste panel requires a valid client certificate."
  }
}

No Session Tokens (with One Exception)

The client certificate is the primary authentication mechanism — there are no login endpoints and no bearer tokens. If the certificate is valid, every request is authorized. This is the same model used by LXD.

The one exception is the optional two-factor authentication (2FA) feature. When 2FA is enabled, admin requests must also carry a valid lamaste_2fa_session cookie. This cookie is issued by POST /api/settings/2fa/verify after the admin presents a correct TOTP code, and it is HMAC-SHA256 signed, HttpOnly, Secure, SameSite=Strict with a 12-hour absolute expiry and 2-hour inactivity timeout. If a request arrives with a valid mTLS certificate but without a valid 2FA session cookie, the API returns:

{
  "error": "2fa_required"
}

with HTTP 401. The 2FA status and verification endpoints are themselves exempt from the 2FA session requirement so that the admin can check status and submit a code without already having a session.

Content Type

All request and response bodies use application/json unless explicitly noted otherwise:

• File downloads (certificates) return their native MIME type
• File uploads use multipart/form-data
• WebSocket connections use the standard WebSocket upgrade handshake

Requests with a JSON body must include the Content-Type: application/json header.

Error Format

Every error response follows a consistent contract:

{
  "error": "Human-readable error summary",
  "details": {}
}

Field	Type	Presence	Description
error	string	Always	A short, human-readable error message
details	object	Optional	Additional structured information about the error

Validation Errors (400)

All request bodies are validated with Zod schemas at the route level. When validation fails, the error handler returns a 400 with the Zod issues:

{
  "error": "Validation failed",
  "details": {
    "issues": [
      {
        "path": ["subdomain"],
        "message": "Subdomain must be lowercase alphanumeric with optional hyphens, cannot start or end with a hyphen"
      },
      {
        "path": ["port"],
        "message": "Port must be at least 1024"
      }
    ]
  }
}

Operational Errors (4xx)

Business logic errors return appropriate HTTP status codes with descriptive messages:

{
  "error": "Cannot delete the last user"
}

Common status codes:

Code	Meaning	Example
400	Bad request / validation failed	Invalid subdomain format
401	2FA session required	Valid mTLS cert but no 2FA session cookie
403	mTLS certificate missing or invalid	No client cert presented
404	Resource not found	Tunnel ID does not exist
409	Conflict	Username already exists
410	Gone	Onboarding endpoint called after completion
503	Service unavailable	Management endpoint called before onboarding

Internal Errors (500)

Unexpected errors return a generic message in production to avoid leaking internal details:

{
  "error": "Internal server error"
}

In development mode, the response includes a details object with the error message and stack trace.

Onboarding Guard

The API is split into two groups with mutual exclusion enforced by middleware:

Route Group	Prefix	Available When	Otherwise Returns
Onboarding	/api/onboarding/*	status != COMPLETED	410 Gone
Management	/api/* (except health, onboarding, invite, and enroll)	status == COMPLETED	503 Service Unavailable
Public	/api/invite/*, /api/enroll	Always (no mTLS)	N/A

The GET /api/onboarding/status endpoint is always accessible regardless of onboarding state. The GET /api/health endpoint is also always accessible — it is registered outside both guards. The /api/invite/* and /api/enroll routes are registered in a separate public context with no mTLS middleware and no onboarding guard.

410 response (onboarding complete):

{
  "error": "Onboarding already completed"
}

503 response (onboarding incomplete):

{
  "error": "Onboarding not complete",
  "onboardingStatus": "FRESH"
}

Onboarding States

The onboarding progresses through a linear state machine:

FRESH → DOMAIN_SET → DNS_READY → PROVISIONING → COMPLETED

Each state transition is triggered by a specific API call and validated server-side. You cannot skip states.

CORS Policy

Cross-Origin Resource Sharing is configured to accept requests from the panel UI origins:

• Before domain setup: https://<droplet-ip>:9292
• After domain setup: both https://<droplet-ip>:9292 and https://panel.<domain>

Requests from other origins are rejected by the CORS policy.

WebSocket Connections

Two endpoints use WebSocket for real-time streaming:

Endpoint	Purpose	Protocol
WS /api/onboarding/provision/stream	Provisioning progress	JSON messages
WS /api/services/:name/logs	Live service log tailing	JSON messages

WebSocket connections follow the standard upgrade handshake over the same HTTPS connection. The wss:// protocol is used in production since all traffic goes through nginx with TLS.

WebSocket messages are always JSON objects. There is no binary framing.

Common Response Patterns

Success with Data

Most GET endpoints return the requested resource directly:

{
  "tunnels": [{ "id": "...", "subdomain": "app", "port": 8080 }]
}

Success with Confirmation

Mutating endpoints typically return an ok field:

{
  "ok": true,
  "tunnel": { "id": "...", "subdomain": "app", "port": 8080 }
}

Success with Warning

Some operations succeed but produce a non-fatal warning (for example, nginx reload failure after certificate renewal):

{
  "ok": true,
  "domain": "app.example.com",
  "newExpiry": "2026-06-11T00:00:00.000Z",
  "warning": "Certificate renewed but nginx reload failed"
}

File Upload Limits

The server accepts multipart file uploads up to 50 MB per file, used by the static sites file management endpoints.

Rate Limiting

There is no general application-level rate limiting. The mTLS requirement means only authenticated administrators can reach the API, and the expected number of concurrent users is one or two. If you are self-hosting and want rate limits, configure them in nginx.

There are two exceptions:

• 2FA endpoints (/confirm, /verify, /disable) enforce per-IP rate limiting: 5 attempts per 2-minute window, with a 5-minute ban once the limit is exceeded. This protects against brute-force TOTP guessing even though the caller already holds a valid mTLS certificate.
• Ticket requests (POST /api/tickets) enforce per-agent rate limiting: 10 tickets per minute per agent. This protects against resource exhaustion from automated ticket generation.

Quick Reference

Item	Value
Base URL (IP)	https://<ip>:9292/api
Base URL (domain)	https://panel.<domain>/api
Authentication	mTLS client certificate
Content-Type	application/json (default)
Validation	Zod schemas at route level
Error format	{ "error": "...", "details": {...} }
WebSocket protocol	wss:// with JSON messages
Max upload size	50 MB per file
Internal listen address	127.0.0.1:3100

Endpoint Summary

Method	Path	Group	Description
GET	/api/health	Always	Health check
GET	/api/onboarding/status	Always	Onboarding state
POST	/api/onboarding/domain	Onboarding	Set domain and email
POST	/api/onboarding/verify-dns	Onboarding	Verify DNS records
POST	/api/onboarding/provision	Onboarding	Start provisioning
WS	/api/onboarding/provision/stream	Onboarding	Provisioning progress
GET	/api/invite/:token	Public	Get invitation details
POST	/api/invite/:token/accept	Public	Accept invitation
POST	/api/enroll	Public	Enroll agent with token (hardware-bound)
GET	/api/system/stats	Management	System statistics
POST	/api/system/update	Management	Trigger background server update
POST	/api/agents/plugins/report	Management	Report agent plugin capabilities
GET	/api/agents/me/chisel-credential	Management	The calling agent's Chisel credential
POST	/api/agents/me/chisel-credential/rotate	Management	Rotate own Chisel credential (agent)
GET	/api/agents/me/registry-credential	Management	One-hour registry token for the agent
GET	/api/agents/me/relay-keys	Management	Relay assertion keys, caller's relay label
GET	/api/agents/me/plugin-config/:route	Management	Hosting agent: its plugin's port, secret
POST	/api/agents/me/plugin-config/:route/ack	Management	Hosting agent holds the secret issued
POST	/api/agents/me/jobs/:id/result	Management	Report an agent job's result (agent)
PUT	/api/agents/me/host-facts	Management	Report the agent's host facts (agent)
GET	/api/agent-panel/authz/:label	Management	Agent-panel vhost auth_request (nginx)
POST	/api/agents/:label/chisel-credential/rotate	Management	Rotate an agent's Chisel credential
GET	/api/tunnels/agent-config	Management	One agent's tunnel configuration
GET	/api/tunnels	Management	List tunnels
POST	/api/tunnels	Management	Create tunnel
PATCH	/api/tunnels/:id	Management	Move, access mode, body limit, enable
DELETE	/api/tunnels/:id	Management	Delete tunnel
GET	/api/sites	Management	List static sites
POST	/api/sites	Management	Create static site
DELETE	/api/sites/:id	Management	Delete static site
PATCH	/api/sites/:id	Management	Update site settings
POST	/api/sites/:id/verify-dns	Management	Verify site DNS
GET	/api/sites/:id/files	Management	List site files
POST	/api/sites/:id/files	Management	Upload site files
DELETE	/api/sites/:id/files	Management	Delete site file
GET	/api/invitations	Management	List invitations
POST	/api/invitations	Management	Create invitation
DELETE	/api/invitations/:id	Management	Revoke invitation
GET	/api/users	Management	List users
POST	/api/users	Management	Create user
PUT	/api/users/:username	Management	Update user
DELETE	/api/users/:username	Management	Delete user
POST	/api/users/:username/reset-totp	Management	Reset TOTP secret
GET	/api/certs	Management	List certificates
GET	/api/certs/auto-renew-status	Management	Auto-renew timer status
POST	/api/certs/:domain/renew	Management	Force-renew certificate
POST	/api/certs/mtls/rotate	Management	Rotate mTLS cert
GET	/api/certs/mtls/download	Management	Download client.p12
POST	/api/certs/agent	Management	Generate agent certificate
GET	/api/certs/agent	Management	List agent certificates
GET	/api/certs/agent/:label/download	Management	Download agent .p12
PATCH	/api/certs/agent/:label/capabilities	Management	Update agent capabilities
PATCH	/api/certs/agent/:label/allowed-sites	Management	Update agent site access
DELETE	/api/certs/agent/:label	Management	Revoke agent certificate
POST	/api/certs/agent/enroll	Management	Generate enrollment token
DELETE	/api/certs/agent/enroll/:label	Management	Revoke unused enrollment token
POST	/api/certs/agent/upgrade-cert	Management	Upgrade agent cert to hardware-bound
POST	/api/certs/admin/upgrade-to-hardware-bound	Management	Upgrade admin to hardware-bound
GET	/api/certs/admin/auth-mode	Management	Get admin auth mode
GET	/api/settings/2fa	Management	Get 2FA status
POST	/api/settings/2fa/setup	Management	Generate TOTP secret
POST	/api/settings/2fa/confirm	Management	Confirm initial code, enable 2FA
POST	/api/settings/2fa/verify	Management	Verify code, issue session cookie
POST	/api/settings/2fa/disable	Management	Disable 2FA
GET	/api/services	Management	List service statuses
POST	/api/services/:name/:action	Management	Control a service (start/stop/restart)
WS	/api/services/:name/logs	Management	Stream service logs
GET	/api/plugins	Management	List installed plugins
GET	/api/plugins/:name	Management	Get plugin details
POST	/api/plugins/install	Management	Install a plugin
POST	/api/plugins/:name/enable	Management	Enable a plugin
POST	/api/plugins/:name/disable	Management	Disable a plugin
DELETE	/api/plugins/:name	Management	Uninstall a plugin
GET	/api/plugins/:name/oidc-clients	Management	A plugin's OIDC clients (no secrets)
POST	/api/plugins/:name/oidc-clients/:clientId/rotate-secret	Management	New secret for a confidential client
GET	/api/plugins/:name/hosting	Management	Which agent hosts the plugin, its health
POST	/api/plugins/:name/hosting	Management	Host the plugin on an agent (operation)
DELETE	/api/plugins/:name/hosting	Management	Remove the hosting (operation)
POST	/api/plugins/:name/hosting/rotate-secret	Management	New installation secret
GET	/api/plugins/:name/hosting/eligibility	Management	Which agents can host the plugin, and why
GET	/api/plugins/:name/retained-data	Management	Data agents keep of its agent half
DELETE	/api/plugins/:name/retained-data	Management	Purge it on an agent, or forget the record
GET	/api/plugins/:name/hooks	Management	Lifecycle hooks, what needs approval
POST	/api/plugins/:name/hooks/approve	Management	Approve with the approval digest
PUT	/api/plugins/:name/hooks/auto-approve	Management	Auto-approve what later versions bring
POST	/api/plugins/:name/update	Management	Update an agent-hosted plugin in place
DELETE	/api/plugins/:name/update	Management	Discard an update waiting for approval
GET	/api/plugins/:name/operations	Management	The plugin's recent operations
GET	/api/plugins/:name/operations/:id	Management	One operation and its steps
ANY	/api/<route>, /api/<route>/*	Management	Forwarded to the agent half's /admin/*
GET	/api/audit	Management	Audit log
GET	/api/notifications	Management	Panel notifications
POST	/api/notifications/read	Management	Mark notifications read
GET	/api/registry-credential	Management	Registry credential summary
PUT	/api/registry-credential	Management	Set the registry credential (verified)
DELETE	/api/registry-credential	Management	Remove the registry credential
GET	/api/plugins/push-install/config	Management	Get push install configuration
PATCH	/api/plugins/push-install/config	Management	Update push install configuration
GET	/api/plugins/push-install/policies	Management	List push install policies
POST	/api/plugins/push-install/policies	Management	Create push install policy
PATCH	/api/plugins/push-install/policies/:id	Management	Update push install policy
DELETE	/api/plugins/push-install/policies/:id	Management	Delete push install policy
POST	/api/plugins/push-install/enable/:label	Management	Enable push install for agent
DELETE	/api/plugins/push-install/enable/:label	Management	Disable push install for agent
GET	/api/plugins/push-install/agent-status	Management	Agent checks own push install status
POST	/api/plugins/push-install/:label	Management	Record a push-install command (legacy)
GET	/api/plugins/push-install/sessions	Management	List push install audit log
POST	/api/tickets/scopes	Management	Register ticket scope
GET	/api/tickets/scopes	Management	List scopes, instances, assignments
DELETE	/api/tickets/scopes/:name	Management	Delete ticket scope
POST	/api/tickets/instances	Management	Register instance
DELETE	/api/tickets/instances/:instanceId	Management	Deregister instance
POST	/api/tickets/instances/:instanceId/heartbeat	Management	Instance heartbeat
POST	/api/tickets/assignments	Management	Assign agent to instance
DELETE	/api/tickets/assignments/:agentLabel/:instanceScope	Management	Remove assignment
GET	/api/tickets/assignments	Management	List assignments
POST	/api/tickets	Management	Request ticket
GET	/api/tickets/inbox	Management	Check ticket inbox
POST	/api/tickets/validate	Management	Validate and consume ticket
GET	/api/tickets	Management	List all tickets (admin)
DELETE	/api/tickets/:ticketId	Management	Revoke ticket
POST	/api/tickets/sessions	Management	Create session from ticket
POST	/api/tickets/sessions/:sessionId/heartbeat	Management	Session heartbeat
PATCH	/api/tickets/sessions/:sessionId	Management	Update session status
DELETE	/api/tickets/sessions/:sessionId	Management	Kill session
GET	/api/tickets/sessions	Management	List sessions
POST	/api/storage/servers	Management	Register a storage server
GET	/api/storage/servers	Management	List registered storage servers
DELETE	/api/storage/servers/:id	Management	Remove a storage server
POST	/api/storage/bindings	Management	Bind storage to plugin
GET	/api/storage/bindings	Management	List all bindings
GET	/api/storage/bindings/:pluginName	Management	Get binding for plugin
DELETE	/api/storage/bindings/:pluginName	Management	Unbind storage from plugin

POST /api/plugins/push-install/:label checks the push-install gates and records the command in the push-install log; nothing delivers it to the agent. What Lamaste does push to an agent — installing, updating and removing an agent half — runs as plugin operations under the same gates (Agent-Hosted Plugins). The agent-hosted plugin endpoints are described in Agent-Hosted Plugins, Lifecycle Hooks and Audit Log and Notifications.

Agent Capabilities

Agent certificates use capability-based access control. Base capabilities are always available; plugins can declare additional capabilities in their manifest.

Base capabilities:

Capability	Description
tunnels:read	List own tunnels, fetch own Chisel config (always-on, cannot be removed)
tunnels:write	Create, update and delete tunnels the agent carries
services:read	View service status
services:write	Start, stop, and restart services
system:read	View system stats (CPU, RAM, disk)
sites:read	List sites and browse files
sites:write	Upload and delete files on assigned sites
panel:expose	Expose agent management panel at agent-<label>.<domain>
identity:read	Parse Authelia identity headers on plugin routes
identity:query	Query panel for Authelia user metadata

Plugin-declared capabilities: Plugins can declare additional capabilities in their lamaste-plugin.json manifest using either a flat array ("capabilities": ["scope:action"]) or a nested object ("capabilities": { "agent": ["scope:action"] }). Both formats are normalized to a flat array internally. These are merged with base capabilities and available for assignment to agent certificates. Capabilities are validated dynamically via getValidCapabilities().

Ticket scope capabilities: Ticket scopes (registered via POST /api/tickets/scopes) declare capabilities that are dynamically merged with base and plugin capabilities. For example, a scope named shell declaring scopes: [{ name: "shell:connect" }] makes shell:connect available for assignment to agent certificates. See the Tickets API for details.