MCP for Trello

A public Model Context Protocol server that connects Claude to Trello. Hosted at mcpfortrello.com.

Connect to Claude

1. In Claude, go to Settings → Connectors → Add Custom Connector
2. Enter: https://mcpfortrello.com/mcp
3. Authorize with your Trello account
4. Done — Claude can now manage your Trello boards

Tools (43)

| Category | Tools | |---|---| | Boards | get_boards, get_board, create_board, update_board, get_board_members, get_board_labels | | Lists | get_lists, get_list, create_list, update_list, archive_list | | Cards | get_cards, get_card, create_card, update_card, delete_card, add_card_member, remove_card_member | | Labels | get_labels, create_label, update_label, delete_label, add_label_to_card, remove_label_from_card | | Comments | get_comments, add_comment, update_comment | | Checklists | get_card_checklists, create_checklist, delete_checklist, add_checkitem, update_checkitem | | Attachments | get_attachments, add_attachment, delete_attachment | | Custom Fields | get_custom_fields, get_card_custom_field_items, set_card_custom_field_item | | Search | search | | Members | get_me, get_member | | Organizations | get_organizations, get_organization_boards | | Board Members | add_board_member, remove_board_member | | Activity | get_actions |

Self-Hosting

Prerequisites

• Node.js 18+
• pnpm
• A Cloudflare account
• A Trello Power-Up registration (for the API key)

Setup

git clone https://github.com/michaelpryor/mcpfortrello.git
cd mcpfortrello
pnpm install

# Create KV namespace
npx wrangler kv namespace create OAUTH_KV
# Update the KV namespace ID in wrangler.jsonc

# Set secrets
npx wrangler secret put TRELLO_API_KEY
npx wrangler secret put COOKIE_ENCRYPTION_KEY  # openssl rand -hex 32

# Local development
cp .dev.vars.example .dev.vars
# Fill in your values
pnpm dev

# Deploy
pnpm deploy

Configuration

Update wrangler.jsonc with your domain and KV namespace ID. Set workers_dev: false for production to force traffic through your custom domain (enables WAF rate limiting).

Architecture

• Cloudflare Workers with OAuth 2.1 via @cloudflare/workers-oauth-provider
• McpAgent Durable Object for MCP sessions (hibernates between requests)
• OAuth 2.1 for MCP auth, bridging to Trello's /1/authorize token flow
• Trello credentials encrypted in OAuth grant props

License

MIT