{
  "openapi": "3.1.0",
  "info": {
    "title": "LLM CFO Public API",
    "description": "Public endpoints for AI agents and integrations.",
    "version": "1.0.0",
    "contact": {
      "email": "hello@llmcfo.com"
    }
  },
  "servers": [
    {
      "url": "https://llmcfo.com"
    }
  ],
  "paths": {
    "/api/contact": {
      "get": {
        "summary": "Describe the contact endpoint",
        "responses": {
          "200": { "description": "Supported fields, topics, and request limits.", "content": { "application/json": { "schema": { "type": "object" } } } }
        }
      },
      "post": {
        "summary": "Send a message to LLM CFO",
        "description": "Public, rate-limited contact form for humans and agents. Does not register a Tidal user or accept secrets. Delivery requires Cloudflare Email Service configuration.",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": { "schema": { "$ref": "#/components/schemas/ContactMessage" } },
            "application/x-www-form-urlencoded": { "schema": { "$ref": "#/components/schemas/ContactMessage" } }
          }
        },
        "responses": {
          "200": { "description": "Message accepted by the email binding.", "content": { "application/json": { "schema": { "type": "object", "properties": { "ok": { "type": "boolean", "const": true } } } } } },
          "400": { "$ref": "#/components/responses/Error" },
          "403": { "$ref": "#/components/responses/Error" },
          "413": { "$ref": "#/components/responses/Error" },
          "415": { "$ref": "#/components/responses/Error" },
          "429": { "$ref": "#/components/responses/Error" },
          "503": { "$ref": "#/components/responses/Error" }
        }
      }
    },
    "/health.json": {
      "get": {
        "summary": "Health check",
        "description": "Returns the service status.",
        "responses": {
          "200": {
            "description": "Service is healthy.",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "status": { "type": "string", "example": "ok" }
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "ContactMessage": {
        "type": "object",
        "required": ["name", "email", "topic", "message"],
        "additionalProperties": false,
        "properties": {
          "name": { "type": "string", "minLength": 1, "maxLength": 120 },
          "email": { "type": "string", "format": "email", "maxLength": 254 },
          "company": { "type": "string", "maxLength": 120 },
          "topic": { "type": "string", "enum": ["audit", "telemetry", "partnership", "other"] },
          "message": { "type": "string", "minLength": 10, "maxLength": 4000 },
          "website": { "type": "string", "description": "Leave blank; honeypot field for browser forms." }
        }
      }
    },
    "responses": {
      "Error": {
        "description": "Structured error response.",
        "content": { "application/json": { "schema": { "type": "object", "required": ["error"], "properties": { "error": { "type": "string" } } } } }
      }
    }
  }
}