trello-mcp: Instructions file for Codex

AGENTS.md

trello-mcp AGENTS.md is an instructions file for Codex, OpenCode from asim-altayb/trello-mcp. It costs 470 tokens per session, scanned A, original, MIT.

A set of instructions that tells an AI coding agent how to install and configure a Trello MCP server, which connects the agent to Trello project information. It includes operating-system-specific paths, credential storage, and setup checks.

In plain words
What is it for?
Use it to set up Trello access in a project, register the server, store credentials, and verify the connection.
Why use it?
It turns a multi-step installation into documented instructions and keeps Trello credentials in an uncommitted environment file.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is asim-altayb/trello-mcp's own configuration. It tells Codex and OpenCode how to work on trello-mcp 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 trello-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to asim-altayb/trello-mcp. 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/asim-altayb/trello-mcp/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/asim-altayb/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
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Your own site
<a href="https://agentmods.dev/instructions/asim-altayb/trello-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/asim-altayb/trello-mcp/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>

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.

agentmods 80×15 button for trello-mcp AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/asim-altayb/trello-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/asim-altayb/trello-mcp/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 470 This file is loaded in full into every session.
When invoked 470 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 $0.00470 $0.00470
Opus 5 $0.00235 $0.00235
Sonnet 5 $0.00094 $0.00094
Haiku 4.5 $0.00047 $0.00047

Measured 9d ago against content hash fc1d2d9146de, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, 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 9d 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 · 43 lines

What it actually says

AI agent instructions

This repository is designed to be installed and configured by AI coding agents on Linux, macOS, and Windows.

One-line setup (paste into any agent)

Fetch https://raw.githubusercontent.com/asim-altayb/trello-mcp/main/docs/agent-setup/prompt.md and follow every step to install trello-mcp and wire it to the current project.

Shorter variant if your agent already fetched the prompt:

Follow https://raw.githubusercontent.com/asim-altayb/trello-mcp/main/docs/agent-setup/prompt.md

What the agent will do

  1. Detect OS (Linux / macOS / Windows) and pick the correct paths
  2. Clone or update the shared server install (see table below)
  3. Store Trello credentials in SERVER_DIR/.env (never committed)
  4. Write .trello-mcp.json in the project root (safe to commit)
  5. Register the MCP server in .mcp.json (or the client-specific config)
  6. Verify with trello_project_info

Key paths by OS

Linux macOS Windows
Server install ~/.local/share/trello-mcp/ ~/.local/share/trello-mcp/ %LOCALAPPDATA%\trello-mcp\
Credentials ~/.local/share/trello-mcp/.env same %LOCALAPPDATA%\trello-mcp\.env
Project boards PROJECT_ROOT/.trello-mcp.json same same
MCP config PROJECT_ROOT/.mcp.json same same

In JSON MCP configs on Windows, use forward slashes in paths (e.g. C:/Users/you/AppData/Local/trello-mcp/dist/index.js).

Full prompt

docs/agent-setup/prompt.md

Published URL (for agents that support URL fetch):

https://raw.githubusercontent.com/asim-altayb/trello-mcp/main/docs/agent-setup/prompt.md

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. 9d ago First seen · 43 lines · 470 tokens per session scan A fc1d2d9146de

Subscribe to this mod's changes

trello-mcp AGENTS.md is an instructions file published in the GitHub repository asim-altayb/trello-mcp (2 stars, last pushed 1mo ago), licensed MIT. It adds 470 tokens to every session, about $0.0024 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.

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