What is servers AGENTS.md?

Project-specific instructions for working on the Model Context Protocol reference servers. They describe the project layout, development setup, and rules for adding or rewriting source files.

Use them when changing the modelcontextprotocol/servers project or adding a new reference server.

They give a coding agent the repository rules it needs to make changes consistently.

How modelcontextprotocol/servers configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to modelcontextprotocol/servers. 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/modelcontextprotocol/servers/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/modelcontextprotocol/servers

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/modelcontextprotocol/servers/agents-md/github.svg)](https://agentmods.dev/instructions/modelcontextprotocol/servers/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/modelcontextprotocol/servers/agents-md"><img src="https://agentmods.dev/badge/instructions/modelcontextprotocol/servers/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/modelcontextprotocol/servers/agents-md"><img src="https://agentmods.dev/badge/instructions/modelcontextprotocol/servers/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 12,067 This file is loaded in full into every session.

When invoked 12,067 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 unknown 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.

Model	Per session	Once invoked
Fable 5.1	$0.12067	$0.12067
Opus 5.5	$0.04827	$0.04827
Sonnet 5.5	$0.02413	$0.02413
Haiku 4.5	$0.01207	$0.01207

Measured yesterday against content hash 6f67a8c4d8b6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

servers 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 yesterday.

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 · 750 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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.

yesterday Changed · +6 lines · +88 tokens per session 6f67a8c4d8b6
8d ago Changed · +6 lines · +122 tokens per session 6c748ed0d2ce
13d ago Changed · +52 lines · +813 tokens per session ff8598cfe0c5
18d ago Changed · +42 lines · +749 tokens per session 06ceb42dcb45
26d ago First seen · 644 lines · 10,295 tokens per session scan A a4d56e981515

Subscribe to this mod's changes

servers AGENTS.md is an instructions file published in the GitHub repository modelcontextprotocol/servers (91,815 stars, last pushed yesterday), with no licence file. It adds 12,067 tokens to every session, about $0.0483 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 2026-10-12.

Building agents

servers AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
servers AGENTS.mdmodelcontextprotocol/servers	Instructions file	92k	yesterday	none	A	12,067	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,516	GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

servers: Instructions file for Codex