trello-plugin

Hermes Agent plugin for Trello board integration.

Setup

1. Get Trello Credentials

1. Get your API Key from: https://trello.com/app-key
2. Generate a Token from the same page (click "Token" under API Key)
3. Set these as environment variables in your Hermes profile config (.env or config.yaml):

export TRELLO_API_KEY="your-trello-api-key"
export TRELLO_TOKEN="your-trello-token"

2. Install

cd trello-plugin
pip install .

For development:

pip install -e ".[dev]"

3. Register with Hermes Agent

Add the plugin to your Hermes config (~/.hermes/config.yaml or profile):

plugins:
  - trello-plugin

Available Tools

Once configured, the agent has access to these tools:

trello_verify_credentials

Verifies your Trello API key and token are valid by calling the Trello API.

✓ Trello credentials verified successfully (authenticated as your-username)

trello_list_boards

Lists all Trello boards accessible with your credentials.

Field	Description
id	Trello board ID
name	Board name
url	Direct Trello URL
closed	Whether the board is archived
starred	Whether the board is starred

trello_disconnect

Clears Trello credentials from the in-memory client. Since credentials are stored in environment variables, the agent can reconnect automatically on the next tool call.

Development

# Install dev dependencies
pip install -e ".[dev]"

# Run tests
PYTHONPATH=src python3 -m pytest tests/ -v

# Lint
pip install ruff
ruff check src/

Architecture

trello-plugin/
├── src/
│   └── trello_plugin/
│       ├── __init__.py    # Package exports
│       ├── client.py      # TrelloClient — REST API wrapper
│       └── tools.py       # Hermes tool definitions
├── tests/
│   └── test_auth.py       # Test suite (18 tests)
├── docs/
│   └── backend/
│       └── trello-auth-spec.md
├── pyproject.toml
└── README.md