Trello

Trello

Access the Trello API with managed OAuth authentication. Manage boards, lists, cards, checklists, labels, and members for project and task management.

Quick Start

# Get boards for current user
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/trello/1/members/me/boards')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Base URL

https://api.maton.ai/trello/{native-api-path}

Maton proxies requests to api.trello.com and automatically injects your OAuth token.

Authentication

All requests require the Maton API key in the Authorization header:

Authorization: Bearer $MATON_API_KEY

Environment Variable: Set your API key as MATON_API_KEY:

export MATON_API_KEY="YOUR_API_KEY"

Getting Your API Key

1. Sign in or create an account at maton.ai 2. Go to maton.ai/settings 3. Copy your API key

Connection Management

Manage your Trello OAuth connections at https://api.maton.ai.

List Connections

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections?app=trello&status=ACTIVE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Create Connection

python <<'EOF'
import urllib.request, os, json
data = json.dumps({'app': 'trello'}).encode()
req = urllib.request.Request('https://api.maton.ai/connections', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Content-Type', 'application/json')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Get Connection

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections/{connection_id}')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Response:

{
  "connection": {
    "connection_id": "{connection_id}",
    "status": "ACTIVE",
    "creation_time": "2025-12-08T07:20:53.488460Z",
    "last_updated_time": "2026-01-31T20:03:32.593153Z",
    "url": "https://connect.maton.ai/?session_token=...",
    "app": "trello",
    "metadata": {}
  }
}

Open the returned url in a browser to complete OAuth authorization.

Delete Connection

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections/{connection_id}', method='DELETE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Specifying Connection

If you have multiple Trello connections, specify which one to use with the Maton-Connection header:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/trello/1/members/me/boards')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Maton-Connection', '{connection_id}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

If you have multiple connections, always include this header to ensure requests go to the intended account.

Security & Permissions

API Reference

Members

#### Get Current Member

GET /trello/1/members/me

#### Get Member's Boards

GET /trello/1/members/me/boards

Query parameters:

Boards

#### Get Board

GET /trello/1/boards/{id}

Query parameters:

Example:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/trello/1/boards/BOARD_ID?lists=open&cards=open')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

#### Create Board

POST /trello/1/boards
Content-Type: application/json
{
  "name": "Project Alpha",
  "desc": "Main project board",
  "defaultLists": false,
  "prefs_permissionLevel": "private"
}

#### Update Board

PUT /trello/1/boards/{id}
Content-Type: application/json
{
  "name": "Project Alpha - Updated",
  "desc": "Updated description"
}

#### Delete Board

DELETE /trello/1/boards/{id}

#### Get Board Lists

GET /trello/1/boards/{id}/lists

Query parameters:

#### Get Board Cards

GET /trello/1/boards/{id}/cards

#### Get Board Members

GET /trello/1/boards/{id}/members

Lists

#### Get List

GET /trello/1/lists/{id}

#### Create List

POST /trello/1/lists
Content-Type: application/json
{
  "name": "To Do",
  "idBoard": "BOARD_ID",
  "pos": "top"
}

#### Update List

PUT /trello/1/lists/{id}
Content-Type: application/json
{
  "name": "In Progress"
}

#### Archive List

PUT /trello/1/lists/{id}/closed
Content-Type: application/json
{
  "value": true
}

#### Get Cards in List

GET /trello/1/lists/{id}/cards

#### Move All Cards in List

POST /trello/1/lists/{id}/moveAllCards
Content-Type: application/json
{
  "idBoard": "BOARD_ID",
  "idList": "TARGET_LIST_ID"
}

Cards

#### Get Card

GET /trello/1/cards/{id}

Query parameters:

#### Create Card

POST /trello/1/cards
Content-Type: application/json
{
  "name": "Implement feature X",
  "desc": "Description of the task",
  "idList": "LIST_ID",
  "pos": "bottom",
  "due": "2025-03-30T12:00:00.000Z",
  "idMembers": ["MEMBER_ID"],
  "idLabels": ["LABEL_ID"]
}

#### Update Card

PUT /trello/1/cards/{id}
Content-Type: application/json
{
  "name": "Updated card name",
  "desc": "Updated description",
  "due": "2025-04-15T12:00:00.000Z",
  "dueComplete": false
}

#### Move Card to List

PUT /trello/1/cards/{id}
Content-Type: application/json
{
  "idList": "NEW_LIST_ID",
  "pos": "top"
}

#### Delete Card

DELETE /trello/1/cards/{id}

#### Add Comment to Card

POST /trello/1/cards/{id}/actions/comments
Content-Type: application/json
{
  "text": "This is a comment"
}

#### Add Member to Card

POST /trello/1/cards/{id}/idMembers
Content-Type: application/json
{
  "value": "MEMBER_ID"
}

#### Remove Member from Card

DELETE /trello/1/cards/{id}/idMembers/{idMember}

#### Add Label to Card

POST /trello/1/cards/{id}/idLabels
Content-Type: application/json
{
  "value": "LABEL_ID"
}

Checklists

#### Get Checklist

GET /trello/1/checklists/{id}

#### Create Checklist

POST /trello/1/checklists
Content-Type: application/json
{
  "idCard": "CARD_ID",
  "name": "Task Checklist"
}

#### Create Checklist Item

POST /trello/1/checklists/{id}/checkItems
Content-Type: application/json
{
  "name": "Subtask 1",
  "pos": "bottom",
  "checked": false
}

#### Update Checklist Item

PUT /trello/1/cards/{cardId}/checkItem/{checkItemId}
Content-Type: application/json
{
  "state": "complete"
}

#### Delete Checklist

DELETE /trello/1/checklists/{id}

Labels

#### Get Board Labels

GET /trello/1/boards/{id}/labels

#### Create Label

POST /trello/1/labels
Content-Type: application/json
{
  "name": "High Priority",
  "color": "red",
  "idBoard": "BOARD_ID"
}

Colors: yellow, purple, blue, red, green, orange, black, sky, pink, lime, null (no color)

#### Update Label

PUT /trello/1/labels/{id}
Content-Type: application/json
{
  "name": "Critical",
  "color": "red"
}

#### Delete Label

DELETE /trello/1/labels/{id}

Search

#### Search All

GET /trello/1/search?query=keyword&modelTypes=cards,boards

Query parameters:

Code Examples

JavaScript

const headers = {
  'Authorization': Bearer ${process.env.MATON_API_KEY}
};
// Get boards
const boards = await fetch(
  'https://api.maton.ai/trello/1/members/me/boards',
  { headers }
).then(r => r.json());
// Create card
await fetch(
  'https://api.maton.ai/trello/1/cards',
  {
    method: 'POST',
    headers: { ...headers, 'Content-Type': 'application/json' },
    body: JSON.stringify({
      name: 'New Task',
      idList: 'LIST_ID',
      desc: 'Task description'
    })
  }
);

Python

import os
import requests
headers = {'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}'}
Get boards
boards = requests.get(
    'https://api.maton.ai/trello/1/members/me/boards',
    headers=headers
).json()
Create card
response = requests.post(
    'https://api.maton.ai/trello/1/cards',
    headers=headers,
    json={
        'name': 'New Task',
        'idList': 'LIST_ID',
        'desc': 'Task description'
    }
)

Notes

Error Handling

| Status | Meaning | |--------|---------| | 400 | Missing Trello connection or invalid request | | 401 | Invalid or missing Maton API key | | 404 | Board, list, or card not found | | 429 | Rate limited (10 req/sec per account) | | 4xx/5xx | Passthrough error from Trello API |

Troubleshooting: API Key Issues

1. Check that the MATON_API_KEY environment variable is set:

echo $MATON_API_KEY

2. Verify the API key is valid by listing connections:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Troubleshooting: Invalid App Name

1. Ensure your URL path starts with trello. For example:

Resources

# Get boards for current user
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/trello/1/members/me/boards')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF