mcp-prompt-server: Instructions file for Codex

AGENTS.md

mcp-prompt-server AGENTS.md is an instructions file for Codex, OpenCode from marcmodin/mcp-prompt-server. It costs 251 tokens per session, scanned A, original, MIT.

Repository instructions for the mcp-prompt-server project, including its documentation layout, local commands, Python version, and file requirements. AGENTS.md is a convention for giving coding agents project-specific rules.

In plain words
What is it for?
Use it when editing this repository, adding prompts or resources, running the server, debugging it, or checking its contribution constraints.
Why use it?
It tells contributors and coding agents which tools and project rules to follow before changing files. This helps avoid invalid prompt files, unsupported Python versions, and unsafe symlinks.

Instructions file for CodexOpenCode

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

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

Reuse

Borrowing it

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

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

Your own site · 80×15
<a href="https://agentmods.dev/instructions/marcmodin/mcp-prompt-server/agents-md"><img src="https://agentmods.dev/badge/instructions/marcmodin/mcp-prompt-server/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 251 This file is loaded in full into every session.
When invoked 251 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 $0.00251 $0.00251
Opus 5.5 $0.00100 $0.00100
Sonnet 5.5 $0.00050 $0.00050
Haiku 4.5 $0.00025 $0.00025

Measured 2mo ago against content hash 551ceeec5cdf, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp-prompt-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 · 25 lines

What it actually says

AGENTS.md

Agent instructions for working in this repository.

Quick Reference

Architecture: See docs/architecture.md for complete system design and security model.

Contributing: See docs/contributing.md for development workflow and contribution guidelines.

Run locally: uv run mcp-prompt-server

Run remotely: uvx --from git+https://github.com/marcmodin/mcp-prompt-server mcp-prompt-server

Debug locally: npx @modelcontextprotocol/inspector uv run mcp-prompt-server

Debug remotely: npx @modelcontextprotocol/inspector uvx --from git+https://github.com/marcmodin/mcp-prompt-server mcp-prompt-server

Key Constraints

  • Python >=3.11, uses uv for dependency management
  • Prompt files must be in prompts/ with required YAML frontmatter (name, description)
  • Resource files must be in resources/ with required YAML frontmatter (name, description)
  • No symlinks allowed for security reasons
  • Changes to markdown files require server restart
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 · 25 lines · 251 tokens per session scan A 551ceeec5cdf

Subscribe to this mod's changes

mcp-prompt-server AGENTS.md is an instructions file published in the GitHub repository marcmodin/mcp-prompt-server (1 stars, last pushed 1y ago), licensed MIT. It adds 251 tokens to every session, about $0.0010 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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