What is nakama-mcp AGENTS.md?

A repository instruction document for an MCP server, a program that exposes a running Heroic Labs Nakama game server to AI assistants. It explains the APIs, tools, directories, commands, and architecture rules.

Use it when changing, testing, regenerating catalogs, or bundling this TypeScript Nakama integration.

It gives coding agents the project context needed to work safely with Nakama's player and administration interfaces.

How mlger/nakama-mcp configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to mlger/nakama-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/mlger/nakama-mcp/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/mlger/nakama-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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/mlger/nakama-mcp/agents-md/github.svg)](https://agentmods.dev/instructions/mlger/nakama-mcp/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/mlger/nakama-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/mlger/nakama-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.

Your own site · 80×15

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

Per session 1,580 This file is loaded in full into every session.

When invoked 1,580 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.

Model	Per session	Once invoked
Fable 5.1	$0.01580	$0.01580
Opus 5.5	$0.00632	$0.00632
Sonnet 5.5	$0.00316	$0.00316
Haiku 4.5	$0.00158	$0.00158

Measured 2mo ago against content hash c89c1b121d7f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

nakama-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 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 · 82 lines

How it starts

The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Workspace guide for ZCode agents working in nakama-mcp. For deeper detail, read CLAUDE.md — it is the authoritative architecture reference.

What this is

An MCP (Model Context Protocol) server that exposes a running Heroic Labs Nakama instance to MCP hosts. TypeScript, ESM, strict mode. No runtime framework beyond @modelcontextprotocol/sdk + zod; HTTP transport uses bare node:http. Wraps Nakama's two HTTP APIs:

Client API (:7350) — player-facing (auth, accounts, storage, leaderboards, RPCs).
Console API (:7351) — admin/ops (search players, storage, status, ban).

Speaks stdio by default, or streamable-HTTP when MCP_TRANSPORT=http. Nakama exposes ~180 operations, so the server uses a search + execute design (nakama_search_actions → nakama_execute_action) over a generated catalog, plus ~12 promoted convenience tools.

Key directories

src/ — TypeScript source (see layer map below).
data/catalog.json — generated & committed, shipped in the npm package. Do not hand-edit; run npm run regen-catalog.
scripts/ — catalog regen (regen-catalog.mjs, lib/resolve.mjs) and MCPB bundling (build-mcpb.mjs).
test/ — each test is a standalone Node script (no test framework); see commands below.
docs/superpowers/ — design/plan notes for past features.

Commands

npm install
npm run build              # tsc -> dist/ (strict). ALWAYS build before testing — tests load dist/.
npm run dev                # tsc --watch
npm test                   # fast suite, no server (resolve + redact + smoke + http + http-reaper + version)
npm run test:integration   # needs `docker compose up -d --wait` first (stdio, Nakama 3.37.0 + CockroachDB)
npm run test:http-integration  # same prerequisite; drives the live server over the HTTP transport
npm run regen-catalog      # rebuild data/catalog.json from Nakama upstream (needs network)
npm run regen-catalog -- v3.37.0   # ...from a specific git ref/tag
npm run mcpb               # build + pack desktop bundle -> dist-mcpb/nakama-mcp.mcpb

Read the full file on GitHub · 82 lines

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.

2mo ago First seen · 82 lines · 1,580 tokens per session scan A c89c1b121d7f

Subscribe to this mod's changes

nakama-mcp AGENTS.md is an instructions file published in the GitHub repository mlger/nakama-mcp (0 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 1,580 tokens to every session, about $0.0063 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.

Game development claude game-backend heroiclabs mcp model-context-protocol

nakama-mcp AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
nakama-mcp AGENTS.mdmlger/nakama-mcp	Instructions file	0	2mo ago	Apache-2.0	A	1,580	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	5,685	GitHub Copilot
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vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
vscode model-prompts.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	2,022	GitHub Copilot

nakama-mcp: Instructions file for Codex