Local Trello MCP for Claude, Codex and ChatGPT: compact responses, workspace allowlists and read-only opt-in.
Local Trello MCP server in Go. 48 tools, compact responses, guest boards.
16 cards in one list. Response text, characters. Lower is smaller.
77% less response text than the official server for this call (summary mode). Measured 2026-10-17 on one private work board with 144 cards; characters, not tokens. Full mode: 9,112 (69% fewer). For one card's details the official server returned less: 2,662 vs 2,825. All results and method.
Windows: irm https://raw.githubusercontent.com/avhn/trello-mcp/main/install.ps1 iex. Checksum-verified.
Then: run the printed auth command yourself in a private terminal, register, reconnect. Clients and Claude Desktop: docs/setup.md.
Measured response text. Chars; independent zero-based row scales.
Tool definitions. Claude tokens from /context, one session. Node not measured. Lower is smaller.
Claude Code /context in one session; rows over 1k display-rounded to 0.1k. Node could not be loaded into /context. Separately, tools/list: 20,583 vs 33,766 characters (39% fewer vs Node), not tokens.
Call trello-mcp Official Node 1.8.1 vs Official vs Node --- --- --- --- --- --- Boards list, per returned board (characters/board) 150 622 8,682 76% fewer 98% fewer 16 cards, summary (characters) 6,754 29,141 45,335 77% fewer 85% fewer 16 cards, full (characters) 9,112 29,141 45,335 69% fewer 80% fewer 50 board actions (characters) 15,494 55,331 71,008 72% fewer 78% fewer One card's details (characters) 2,825 2,662 16,350 6% more 83% fewer Comments on that card, 2 comments (characters) 586 1,089 3,232 46% fewer 82% fewer Tool definitions (Claude tokens) 8
From the project README.
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Keep the signal. Cut the noise. Local CLI + MCP — fold verbose tool output for Claude Code, Codex, Cursor & Desktop.
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