Help Needed: Using Trello API with CustomGPT on OpenAI's ChatGPT - Base64 Authentication Issue

[Gera Yeremin]

#### Context:
We are trying to integrate Trello's API with CustomGPT on OpenAI's ChatGPT. The goal is to fetch boards and create cards using Trello's API. We have an API key and a token, and we are exploring how to use Base64 encoding for authentication.

#### Steps Taken:
1. **API Key and Token**: We obtained the API key and token from Trello.
2. **Base64 Encoding**: Combined the key and token in the format `key:token` and encoded it to Base64.
- Example: `f95df4a0fb0f261c4f180df9abf26d40:ATTAd7c5a0ddef9acc593e5f5d4dbaab56e49e8d134d55b01f82929f4ac98f8c460e4F9A0B8B`
- Encoded: `Zjk1ZGY0YTBmYjBmMjYxYzRmMTgwZGY5YWJmMjZkNDA6QVRUQWQ3YzVhMGRkZWY5YWNjNTkzZTVmNWQ0ZGJhYWI1NmU0OWU4ZDEzNGQ1NWIwMWY4MjkyOWY0YWM5OGY4YzQ2MGU0RjlBMEI4Qgo=`
3. **OpenAPI Spec**: Tried to include this Base64 encoded string in the `Authorization` header.

#### Issues Encountered:
- When using the `Authorization` header, the OpenAPI spec ignored the header.
- When trying to pass the key and token as query parameters, the API responded with authentication errors.

#### Questions:
1. How can we correctly integrate the Base64 encoded API key and token in the OpenAPI spec for Trello API?
2. Is there a more suitable approach to authenticate Trello API requests in the CustomGPT environment?

### OpenAPI Specification (Latest Attempt):

```yaml
openapi: 3.0.0
info:
title: Trello API
description: API specification for interacting with Trello.
version: 1.0.0
servers:
- url: https://api.trello.com/1
paths:
/members/me/boards:
get:
operationId: getAllBoards
summary: Get all boards for the authenticated user
parameters:
- name: key
in: query
required: true
schema:
type: string
- name: token
in: query
required: true
schema:
type: string
responses:
'200':
description: A list of boards
content:
application/json:
schema:
type: array
items:
$ref: '#/components/schemas/Board'
/cards:
post:
operationId: createCard
summary: Create a new card on a specific board
parameters:
- name: key
in: query
required: true
schema:
type: string
- name: token
in: query
required: true
schema:
type: string
requestBody:
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/Card'
responses:
'200':
description: The created card
content:
application/json:
schema:
$ref: '#/components/schemas/Card'
components:
schemas:
Board:
type: object
properties:
id:
type: string
name:
type: string
desc:
type: string
Card:
type: object
properties:
id:
type: string
name:
type: string
desc:
type: string
idList:
type: string
securitySchemes:
ApiKeyTokenAuth:
type: apiKey
in: query
name: key
security:
- ApiKeyTokenAuth: []
```

Any guidance on this would be highly appreciated!

[milynnus · Accepted solution]

@Gera Yeremin 

As far as I know you cannot work programmatically with Custom GPT but you can with Assistant. In this case it will be with functions. The actual function need to be provided by you. 

in working with GPT for a Guesty user, we provided a micro for the services to retrieve past inbox conversations with the schema taken from the open api json provided by Fastapi /docs page. The token is part of environment variables. 

[Gera Yeremin]

I wonder why it won't work with customgpts from open AI?

I ran into issues with using this app:
https://app.dataforseo.com/api-dashboard

but with some help from support we merged the username and pass into one key via base64 and got it working. There must be a work around Is there a way to reach out to developers who work at Trello with this question?

This must be at least something they are working on.

[Rabbit Consulting]

My God!

Gera, thank you so much!

I am a terrible planner and was looking for a solution.
This costed me ten days. You have no idea how happy I am!

Thanks!

Nils

[Matt]

Hey, 

Did you get this working please? 

Custom GPT API connected to Trello?

[milynnus]

@Matt 

As far as I know you cannot work programmatically with Custom GPT but you can with Assistant. In this case it will be with functions. The actual function need to be provided by you. 

[Dreamsuite Mike]

Hi @Gera Yeremin 

You can try to post this in Trello Developer Community