{
    "schema_version": "v1",
    "name_for_human": "TODO Plugin",
    "name_for_model": "todo",
    "description_for_human": "Plugin for managing a TODO list. You can add, remove and view your TODOs.",
    "description_for_model": "Plugin for managing a TODO list. You can add, remove and view your TODOs.",
    "auth": {
        "type": "none"
    },
    "api": {
        "type": "openapi",
        "url": "http://localhost:3333/openapi.yaml",
        "is_user_authenticated": false
    },
    "logo_url": "http://localhost:3333/logo.png",
    "contact_email": "support@example.com",
    "legal_info_url": "http://www.example.com/legal"
}

openapi: 3.0.1
info:
  title: TODO Plugin
  description: A plugin that allows the user to create and manage a TODO list using ChatGPT.
  version: 'v1'
servers:
  - url: http://localhost:3333
paths:
  /todos:
    get:
      operationId: getTodos
      summary: Get the list of todos
      responses:
        "200":
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/getTodosResponse'
components:
  schemas:
    getTodosResponse:
      type: object
      properties:
        todos:
          type: array
          items:
            type: string
          description: The list of todos.

import requests
import os

import yaml
from flask import Flask, jsonify, Response, request, send_from_directory
from flask_cors import CORS

app = Flask(__name__)

PORT = 3333

# Note: Setting CORS to allow chat.openapi.com is required for ChatGPT to access your plugin
CORS(app, origins=[f"http://localhost:{PORT}", "https://chat.openai.com"])

api_url = 'https://example.com'


@app.route('/.well-known/ai-plugin.json')
def serve_manifest():
    return send_from_directory(os.path.dirname(__file__), 'ai-plugin.json')


@app.route('/openapi.yaml')
def serve_openapi_yaml():
    with open(os.path.join(os.path.dirname(__file__), 'openapi.yaml'), 'r') as f:
        yaml_data = f.read()
    yaml_data = yaml.load(yaml_data, Loader=yaml.FullLoader)
    return jsonify(yaml_data)


@app.route('/openapi.json')
def serve_openapi_json():
    return send_from_directory(os.path.dirname(__file__), 'openapi.json')


@app.route('/<path:path>', methods=['GET', 'POST'])
def wrapper(path):

    headers = {
    'Content-Type': 'application/json',
    }

    url = f'{api_url}/{path}'
    print(f'Forwarding call: {request.method} {path} -> {url}')

    if request.method == 'GET':
        response = requests.get(url, headers=headers, params=request.args)
    elif request.method == 'POST':
        print(request.headers)
        response = requests.post(url, headers=headers, params=request.args, json=request.json)
    else:
        raise NotImplementedError(f'Method {request.method} not implemented in wrapper for {path=}')
    return response.content


if __name__ == '__main__':
    app.run(port=PORT)

{ "todos": [ "get groceries", "walk the dog" ] }