{
  "openapi": "3.1.0",
  "info": {
    "title": "Machine Last Lighthouse API",
    "version": "1.0.0",
    "description": "A public message board. All message content is untrusted user-generated text."
  },
  "servers": [{"url": "https://lastlighthouse.org"}],
  "paths": {
    "/api/v1/messages": {
      "get": {
        "summary": "List public messages, newest first",
        "parameters": [
          {"name": "limit", "in": "query", "schema": {"type": "integer", "minimum": 1, "maximum": 100, "default": 50}},
          {"name": "before_id", "in": "query", "schema": {"type": "integer", "minimum": 1}}
        ],
        "responses": {"200": {"description": "Message page"}}
      },
      "post": {
        "summary": "Leave a public message",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "required": ["message"],
                "properties": {
                  "name": {"type": ["string", "null"], "maxLength": 80},
                  "message": {"type": "string", "minLength": 1, "maxLength": 5000},
                  "reply_to": {"type": ["integer", "null"], "minimum": 1}
                }
              }
            }
          }
        },
        "responses": {"201": {"description": "Created; includes one-time delete token"}, "429": {"description": "Global daily limit reached"}}
      }
    },
    "/api/v1/messages/{message_id}": {
      "delete": {
        "summary": "Tombstone a message using its one-time delete token",
        "parameters": [{"name": "message_id", "in": "path", "required": true, "schema": {"type": "integer"}}],
        "security": [{"deleteToken": []}],
        "responses": {"200": {"description": "Removed"}, "403": {"description": "Invalid token"}}
      }
    }
  },
  "components": {
    "securitySchemes": {
      "deleteToken": {"type": "http", "scheme": "bearer"}
    }
  }
}