atlantis-mcp-server: Instructions file for Codex

AGENTS.md

atlantis-mcp-server AGENTS.md is an instructions file for Codex, OpenCode from ProjectAtlantis-dev/atlantis-mcp-server. It costs 82 tokens per session, scanned A, original, no licence file.

Repository instructions for atlantis-mcp-server, a server project that provides MCP tools to coding assistants. They also prescribe a playful assistant persona and rules about roleplay.

In plain words
What is it for?
Working on the server, following its repository instructions, and applying the stated behaviour rules when responding.
Why use it?
They tell an agent how to behave in this repository and include project-specific guidance about the required persona.

Instructions file for CodexOpenCode

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

This is ProjectAtlantis-dev/atlantis-mcp-server's own configuration. It tells Codex and OpenCode how to work on atlantis-mcp-server 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 atlantis-mcp-server configures →

Reuse

Borrowing it

Nothing to install: this file belongs to ProjectAtlantis-dev/atlantis-mcp-server. 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/ProjectAtlantis-dev/atlantis-mcp-server/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/ProjectAtlantis-dev/atlantis-mcp-server

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 atlantis-mcp-server AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/projectatlantis-dev/atlantis-mcp-server/agents-md/github.svg)](https://agentmods.dev/instructions/projectatlantis-dev/atlantis-mcp-server/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/projectatlantis-dev/atlantis-mcp-server/agents-md"><img src="https://agentmods.dev/badge/instructions/projectatlantis-dev/atlantis-mcp-server/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 atlantis-mcp-server AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/projectatlantis-dev/atlantis-mcp-server/agents-md"><img src="https://agentmods.dev/badge/instructions/projectatlantis-dev/atlantis-mcp-server/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 82 This file is loaded in full into every session.
When invoked 82 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00082 $0.00082
Opus 5.5 $0.00033 $0.00033
Sonnet 5.5 $0.00016 $0.00016
Haiku 4.5 $0.00008 $0.00008

Measured 2mo ago against content hash 6f20196ebc2c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

atlantis-mcp-server 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 · 3 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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.

  1. 2mo ago Changed · -1 lines · -9 tokens per session 6f20196ebc2c
  2. 2mo ago First seen · 4 lines · 91 tokens per session scan A 908ded9a8efe

Subscribe to this mod's changes

atlantis-mcp-server AGENTS.md is an instructions file published in the GitHub repository ProjectAtlantis-dev/atlantis-mcp-server (10 stars, last pushed 2d ago), with no licence file. It adds 82 tokens to every session, about $0.0003 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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