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mcp-server-trello: Instructions file for Codex

AGENTS.md

mcp-server-trello AGENTS.md is an instructions file for Codex, OpenCode from ftaricano/mcp-server-trello. It costs 218 tokens per session, scanned A, original, MIT.

Repository instructions for an MCP server that connects to Trello, a service for organizing work on boards and cards. They define security, installation, source-code, rate-limit and testing rules.

In plain words
What is it for?
Developing the Trello MCP server, adding tools with TypeScript and Zod schemas, and checking changes with linting, type checks and tests.
Why use it?
They help prevent leaked credentials, accidental edits to generated files, excessive API requests and untested MCP tools. They also identify the required validation commands.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions CLAUDE.md; mentions AGENTS.md; mentions Codex.

This is ftaricano/mcp-server-trello's own configuration. It tells Codex and OpenCode 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 →

not rated 0repo 3mo ago A scan 218 tokens original MIT
View source ↗ ftaricano/mcp-server-trello
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/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/ftaricano/mcp-server-trello

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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Your own site
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Per session 218 This file is loaded in full into every session.
When invoked 218 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 $0.00218 $0.00218
Opus 5.5 $0.00087 $0.00087
Sonnet 5.5 $0.00044 $0.00044
Haiku 4.5 $0.00022 $0.00022

Measured 2mo ago against content hash e05095f4afc9, 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 AGENTS.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.

AGENTS.md · 13 lines

What it actually says

AGENTS.md -- mcp-server-trello

As regras operacionais deste repo sao canonicas em CLAUDE.md (fonte unica para Claude/Codex/Hermes). Leia-o antes de tocar em codigo.

TL;DR das invariantes:

  • Credenciais nunca hardcoded nem comitadas -- usar env, .env, ou macOS Keychain com TRELLO_KEYCHAIN_PREFIX
  • SKIP_PREPARE=true npm install obrigatorio em dev -- sem isso o prepare hook dispara build prematuro
  • build/ e gerado; editar somente src/ -- fonte de verdade e sempre TypeScript
  • Rate limiter nao bypassar -- 300/10s por key, 100/10s por token; violar gera banimento temporario
  • Nova ferramenta MCP: registrar em mcp-tools.ts com schema Zod e cobrir em parity.test.ts

Validar: npm run lint && npm run typecheck && npm test

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 · 13 lines · 218 tokens per session scan A e05095f4afc9

Subscribe to this mod's changes

mcp-server-trello AGENTS.md is an instructions file published in the GitHub repository ftaricano/mcp-server-trello (0 stars, last pushed 3mo ago), licensed MIT. It adds 218 tokens to every session, about $0.0009 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.

Project managementmcpmodel-context-protocoltask-managementtrello
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