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trello-mcp

mcp
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SUMMARY

Local Trello MCP for Claude, Codex and ChatGPT: compact responses, workspace allowlists and read-only opt-in.

README.md

trello-mcp

Local Trello MCP server in Go. 48 tools, compact responses, guest boards.

Release CI License MCP: stdio

Install

curl -fsSL https://raw.githubusercontent.com/avhn/trello-mcp/main/install.sh | sh

Windows: irm https://raw.githubusercontent.com/avhn/trello-mcp/main/install.ps1 | iex. Checksum-verified.

Or give your agent:

Set up trello-mcp by following https://raw.githubusercontent.com/avhn/trello-mcp/main/docs/setup.md; ask me to run its printed absolute-path auth command myself in a private terminal, then reconnect. Never capture authentication output.

Then: run the printed auth command yourself in a private terminal, register, reconnect.
Clients and Claude Desktop: docs/setup.md.

Why

Fewer tokens per response and definition:

vs Official vs Node 1.8.1
30 cards 69% fewer 75% fewer
50 board actions 47% fewer 77% fewer
20 boards 88% fewer 94% fewer
Tool definitions 53% fewer 29% fewer
trello-mcp Official Node 1.8.1
Runs Local binary Hosted Local, Bun/Node
Guest boards Yes No Yes
Delete comments, labels, checklist items Yes No Yes
Local file upload, download to disk (Unix) Yes No Inline base64
Per-object workspace allowlist Yes Per-workspace consent Partial
Server-side read-only mode Yes Not evaluated Not documented

Choose official for zero install, web and mobile, Inbox, Planner or keyword search.

Sources: ours measured (below); official measured live 2026-10-15, definitions estimated; Node estimated from
pinned source. Tokens are chars/4, not a controlled benchmark. Guest boards verified 2026-10-16. Official
features per its repository (2026-09-28) and guide.

Read-oriented profile

Ten read tools (placement; board_use sets the local default board):

TRELLO_TOOLS=workspace_find,board_find,board_use,list_find,card_find,card_get,comment_find,checklist_get,checklist_items,server_health

Benchmark

Synthetic fixtures, versus raw Trello JSON for the same objects.

Scenario Raw Trello JSON this server reduction
20 boards ~2166 ~433 80.0%
30 cards in a list ~9266 ~2968 68.0%
20 comments ~6739 ~4311 36.0%
50 board actions ~11910 ~4248 64.3%
22 card actions ~4888 ~1368 72.0%
Card with 20 comments ~7404 ~4465 39.7%

Synthetic raw pretty JSON is a reproducible reference, not measured output from another MCP server. Tokens use chars/4.

Startup cost Default (48 tools) Read-oriented discovery (10 tools)
tools/list 20694 chars (~5174 tokens) 4400 chars (~1100 tokens)
Initialize instructions 140 chars (~35 tokens) 141 chars (~35 tokens)
Initialize result (including instructions) 304 chars (~76 tokens) 305 chars (~76 tokens)
Independent response Characters Tokens (chars/4)
card_find summary (30 cards) 11873 ~2968
card_find full (30 cards) 15023 ~3756
board_activity all (50 actions) 16994 ~4248
board_activity commentCard 5835 ~1459
board_activity updateCard 5476 ~1369

Docs

Setup · Configuration and security · Tools

License

GPL-3.0-or-later, copyright Mert Dede (MIT up to v0.5.0). Independent Go implementation of the
delorenj/mcp-server-trello 1.8.1 (MIT) tool surface, not a
runtime dependency. Trello is a trademark of Atlassian. trello-mcp is an independent project, not affiliated
with or endorsed by Atlassian.

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