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trello-mcp AGENTS.md

trello-mcp AGENTS.md is an instructions file for Codex, OpenCode from enthouan/trello-mcp. It costs 3,378 tokens per session, scanned A, original, MIT.

Repository instructions for trello-mcp, a server that lets coding agents work with Trello through a standard tool connection.

In plain words
What is it for?
Use them when changing the trello-mcp codebase, especially its Trello client, configuration, tests, logs, or deployment workflows.
Why use it?
They give contributors the project's rules for authentication, input checking, logging, testing, formatting, and deployment, while keeping real Trello calls out of tests.

Instructions file for CodexOpenCode

not rated 4 changed today A scan 3,378 tokens original MIT
View the source file enthouan/trello-mcp
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add instructions/enthouan/trello-mcp/agents-md
Clone the repo
git clone --depth 1 https://github.com/enthouan/trello-mcp

Made for: Codex, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for trello-mcp AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/enthouan/trello-mcp/agents-md.svg)](https://agentmods.dev/instructions/enthouan/trello-mcp/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/enthouan/trello-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/enthouan/trello-mcp/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 3,378 This file is loaded in full into every session.
When invoked 3,378 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.03378 $0.03378
Opus 5 $0.01689 $0.01689
Sonnet 5 $0.00676 $0.00676
Haiku 4.5 $0.00338 $0.00338

Measured today against content hash f181106dda82, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

trello-mcp 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 today.

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 · 332 lines

How it starts

The opening of the file, as written. The whole thing — 332 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

This file gives coding agents project-specific instructions for this repository. It applies to the entire repo unless a more specific AGENTS.md is added in a subdirectory.

Project Summary

trello-mcp is a self-hostable Model Context Protocol server for Trello. It exposes Trello operations as MCP tools and supports:

  • Streamable HTTP MCP transport for container/server deployments.
  • stdio MCP transport for local process-based clients.
  • Trello API key + token authentication.
  • Zod validation for config, tool input, and Trello API responses.
  • Pino logging with secret redaction.
  • Vitest tests and Biome formatting/linting.
  • Docker image publishing through GitHub Actions.

This project is still early, but it has a meaningful public tool surface. Keep changes focused and avoid speculative architecture.

Hard Constraints

  • Do not log Trello credentials, request URLs containing credentials, raw environment objects, or full query strings that include auth.
  • Do not make live Trello API calls in tests. Use injected fetchers/mocks.
  • Do not bypass Zod validation for tool inputs or Trello API responses.
  • Keep src/trello/client.ts as the only place that performs fetch calls to Trello.
  • Keep generated/build output such as dist/, coverage output, and node_modules/ out of commits.

Runtime And Package Manager

  • Node.js: >=24.0.0 <25.0.0.
  • Package manager: [email protected] through Corepack.
  • Module system: ESM ("type": "module").
  • TypeScript is strict, with exactOptionalPropertyTypes and noUncheckedIndexedAccess enabled.

Use:

corepack enable
corepack prepare [email protected] --activate
corepack pnpm install --frozen-lockfile

When pnpm-lock.yaml exists, CI/Codex setup should use frozen installs.

Common Commands

Run these from the repository root:

corepack pnpm install --frozen-lockfile
corepack pnpm typecheck
corepack pnpm lint
corepack pnpm build
corepack pnpm test
corepack pnpm test:coverage
corepack pnpm docs:check
corepack pnpm website:typecheck
corepack pnpm website:build
corepack pnpm website:contracts
corepack pnpm website:test
corepack pnpm website:lighthouse
corepack pnpm website:check

Read the full file on GitHub · 332 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. today Changed f181106dda82
  2. 4d ago First seen · 332 lines · 3,378 tokens per session scan A c9e63d30d724

Subscribe to this mod's changes

trello-mcp AGENTS.md is an instructions file published in the GitHub repository enthouan/trello-mcp (4 stars, last pushed today), licensed MIT. It adds 3,378 tokens to every session, about $0.0169 per session on Opus 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.

LLMaidockermcpmodel-context-protocoltrello
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