mcp-server-trello: Instructions file for Claude Code

CLAUDE.md

mcp-server-trello CLAUDE.md is an instructions file for Claude Code from ftaricano/mcp-server-trello. It costs 948 tokens per session, scanned A, original, MIT.

Instructions for developing and running a local Trello connector for coding agents. Trello is a project-management tool built around boards, lists and cards.

In plain words
What is it for?
It covers the connector's TypeScript and Node.js setup, its command-line tool, its agent-facing tools, testing and installation without triggering a build.
Why use it?
It explains the project structure, setup and validation steps so contributors can work on the connector consistently.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md.

This is ftaricano/mcp-server-trello's own configuration. It tells Claude Code how to work on mcp-server-trello itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mcp-server-trello configures →

Reuse

Borrowing it

Nothing to install: this file belongs to ftaricano/mcp-server-trello. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/ftaricano/mcp-server-trello/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/ftaricano/mcp-server-trello

Made for: Claude Code.

Wrote this? Show the measurements

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Per session 948 This file is loaded in full into every session.
When invoked 948 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00948 $0.00948
Opus 5.5 $0.00379 $0.00379
Sonnet 5.5 $0.00190 $0.00190
Haiku 4.5 $0.00095 $0.00095

Measured 2mo ago against content hash 49aec2ff8271, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp-server-trello CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 76 lines

How it starts

The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md -- mcp-server-trello

MCP server e CLI local para Trello, mantido como @ftaricano/mcp-server-trello. Expoe 31 ferramentas tipadas via Model Context Protocol e um binario trello para workflows de agente no terminal.

O que e

Servidor MCP + CLI que conecta agentes ao Trello: boards, listas, cards, checklists, workspace e atividade recente. Publicado no npm (@ftaricano/mcp-server-trello). Consumido pelo ecossistema Jarvis via skill trello-cpz e por qualquer cliente MCP-compativel. Fork do projeto original de Jarad DeLorenzo (MIT); proveniencia documentada em NOTICE.md.

Stack & estrutura

TypeScript 5 + Node.js >=20 + MCP SDK 1.29 + Zod + axios + Commander | testes: Vitest | lint: ESLint + Prettier

src/
  index.ts          # entry point do servidor MCP (stdio)
  cli.ts            # entry point do binario trello
  cli/              # subcomandos do CLI
  mcp-tools.ts      # 31 ferramentas MCP registradas
  trello-client.ts  # wrapper da API Trello com rate limiter
  rate-limiter.ts   # token bucket (300/10s por key, 100/10s por token)
  validators.ts     # validacao Zod dos inputs
  types.ts          # tipos compartilhados
build/              # compilado TypeScript (gerado; nao editar)
tests/
  mcp-tools.test.ts
  trello-client.test.ts
  rate-limiter.test.ts
  validators.test.ts
  parity.test.ts
  fixtures/
.env.example        # variaveis de ambiente documentadas
.env.template       # template alternativo

Como rodar / validar

# Setup (instalar sem disparar build via prepare)
SKIP_PREPARE=true npm install

# Build
npm run build

# Validar (lint + typecheck + testes) -- rodar ANTES de DONE
npm run lint
npm run typecheck
npm test

# Servidor MCP local (apos build)
node build/index.js

# CLI local
node build/cli.js list-boards --md

Invariantes / regras criticas

  • Credenciais (TRELLO_API_KEY, TRELLO_TOKEN) so via env, .env, ou macOS Keychain -- nunca hardcoded, nunca comitadas. Ver .env.example para os nomes corretos.
  • SKIP_PREPARE=true e obrigatorio no npm install de dev para evitar build automatico do prepare hook.
  • build/ e gerado por tsc + terser -- nao editar arquivos em build/ diretamente; a fonte e sempre src/.
  • Rate limiter (rate-limiter.ts) nao pode ser bypassado: a API Trello limita 300 req/10s por key e 100 req/10s por token; ultrapassar resulta em banimento temporario.
  • O binario trello (CLI) e o servidor MCP (mcp-server-trello) compartilham trello-client.ts -- mudancas ali afetam ambas as superficies.
  • Toda nova ferramenta MCP deve ser registrada em mcp-tools.ts com schema Zod completo e aparecer nos testes de paridade (parity.test.ts).
  • ruvector.db (SQLite de embeddings) e gerado em runtime -- nao commitar.

Read the full file on GitHub · 76 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 76 lines · 948 tokens per session scan A 49aec2ff8271

Subscribe to this mod's changes

mcp-server-trello CLAUDE.md is an instructions file published in the GitHub repository ftaricano/mcp-server-trello (0 stars, last pushed 3mo ago), licensed MIT. It adds 948 tokens to every session, about $0.0038 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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