my-first-mcp-server: Instructions file for Codex

AGENTS.md

my-first-mcp-server AGENTS.md is an instructions file for Codex, OpenCode from donghunee/my-first-mcp-server. It costs 3,862 tokens per session, scanned A, original, no licence file.

A set of AGENTS.md instructions for a first MCP server project. MCP is a standard way for AI assistants to use external tools and data.

In plain words
What is it for?
Use it to understand, run, develop, and build the my-first-mcp-server project, including its HTTP server on port 3000.
Why use it?
It documents the project contents, startup commands, development server, and production build process.

Instructions file for CodexOpenCode

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

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

Reuse

Borrowing it

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

README.md
[![agentmods](https://agentmods.dev/badge/instructions/donghunee/my-first-mcp-server/agents-md.svg)](https://agentmods.dev/instructions/donghunee/my-first-mcp-server/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/donghunee/my-first-mcp-server/agents-md"><img src="https://agentmods.dev/badge/instructions/donghunee/my-first-mcp-server/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 3,862 This file is loaded in full into every session.
When invoked 3,862 The same file — it is already loaded in full.
Security scan A 1 finding. 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 $0.03862 $0.03862
Opus 5 $0.01931 $0.01931
Sonnet 5 $0.00772 $0.00772
Haiku 4.5 $0.00386 $0.00386

Measured 6d ago against content hash c254fcf2a336, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

my-first-mcp-server AGENTS.md scanned grade A with 1 finding 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 6d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -X POST "http://127.0.0.1:3000/mcp?debug=true" \
AGENTS.md · 533 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. 6d ago First seen · 533 lines · 3,862 tokens per session scan A c254fcf2a336

Subscribe to this mod's changes

my-first-mcp-server AGENTS.md is an instructions file published in the GitHub repository donghunee/my-first-mcp-server (0 stars, last pushed 10mo ago), with no licence file. It adds 3,862 tokens to every session, about $0.0193 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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