Lunar

Lunar Handshake API

Gateway health and connectivity check

Documentation GitHub OpenAPI

Specifications

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OpenAPI

https://raw.githubusercontent.com/api-evangelist/lunar/refs/heads/main/openapi/lunar-handshake-api-openapi.yml

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OpenAPI Specification

openapi: 3.0.3
info:
  title: Lunar API Consumption Gateway Admin Configuration Handshake API
  description: Administrative REST API for the Lunar API Consumption Gateway (lunar-engine). This API is exposed on the ENGINE_ADMIN_PORT and provides endpoints for managing flows, policies, configuration, discovery state, and gateway health. The gateway also acts as a proxy for outbound HTTP/HTTPS API traffic on port 8000, controlled via x-lunar-scheme, x-lunar-host, and x-lunar-consumer-tag headers. This spec covers the management/admin plane.
  version: 1.0.0
  contact:
    name: Lunar Support
    url: https://docs.lunar.dev/
  license:
    name: MIT
    url: https://opensource.org/licenses/MIT
servers:
- url: http://localhost:{adminPort}
  description: Lunar Engine Admin API (local)
  variables:
    adminPort:
      default: '8081'
      description: Admin port set via ENGINE_ADMIN_PORT environment variable
tags:
- name: Handshake
  description: Gateway health and connectivity check
paths:
  /handshake:
    get:
      operationId: getHandshake
      summary: Gateway handshake / health check
      description: Returns gateway managed status. Used by the control plane to verify connectivity and whether the gateway instance is managed (LUNAR_MANAGED=true).
      tags:
      - Handshake
      responses:
        '200':
          description: Handshake successful
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HandshakeResponse'
              example:
                managed: true
        '405':
          description: Method not allowed
components:
  schemas:
    HandshakeResponse:
      type: object
      description: Response from the gateway handshake endpoint
      properties:
        managed:
          type: boolean
          description: Whether this gateway instance is managed (LUNAR_MANAGED=true)
      required:
      - managed
externalDocs:
  description: Lunar API Gateway Documentation
  url: https://docs.lunar.dev/api-gateway/get-started/welcome-to-lunar/