marketplace-mcp-my: Instructions file for Codex

AGENTS.md

marketplace-mcp-my AGENTS.md is an instructions file for Codex, OpenCode from hehca42y1900/marketplace-mcp-my. It costs 498 tokens per session, scanned C, a copy of marketplaces-mcp-ru AGENTS.md, MIT.

Repository safety instructions for developers and coding agents working on a project that includes an MCP server, a standard way for AI tools to access external capabilities.

In plain words
What is it for?
Use them to run the project's tests and security scans, keep credentials out of version control, and follow its dependency and publishing rules.
Why use it?
They define checks before commits and pushes, identify files that may contain secrets, and require confirmation for risky actions.

Instructions file for CodexOpenCode

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

This is hehca42y1900/marketplace-mcp-my's own configuration. It tells Codex and OpenCode how to work on marketplace-mcp-my 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 marketplace-mcp-my configures →

Reuse

Borrowing it

Nothing to install: this file belongs to hehca42y1900/marketplace-mcp-my. 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/hehca42y1900/marketplace-mcp-my/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/hehca42y1900/marketplace-mcp-my

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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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.

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<a href="https://agentmods.dev/instructions/hehca42y1900/marketplace-mcp-my/agents-md"><img src="https://agentmods.dev/badge/instructions/hehca42y1900/marketplace-mcp-my/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 498 This file is loaded in full into every session.
When invoked 498 The same file — it is already loaded in full.
Security scan C 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod 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 $0.00498 $0.00498
Opus 5 $0.00249 $0.00249
Sonnet 5 $0.00100 $0.00100
Haiku 4.5 $0.00050 $0.00050

Measured 11d ago against content hash ace096b6f18f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade C, and why

marketplace-mcp-my AGENTS.md scanned grade C with 2 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 11d 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

- `cabinets.json` — the local credential store (`~/.marketplace-mcp/`, chmod 600)

Reads MCP configurationmediumAgent snooping

mcp.json carries server URLs and auth tokens; reading it lets a mod discover and abuse other integrations.

`.mcp.json` IS tracked on purpose — it is the secret-free plugin distribution
Origin

This is a copy

100% identical to marketplaces-mcp-ru AGENTS.md — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

AGENTS.md · 39 lines

What it actually says

AGENTS.md — repo safety rules

Guardrails for humans and AI agents working in this repo. Adapted from letya999/ai-repo-safety-skill.

Before every commit / push

  • pre-commit run --all-files (or at minimum the two local hooks below).
  • python scripts/security/forbid_sensitive_files.py --all
  • python scripts/security/scan_mcp_config.py
  • Run the offline test suite: python -m pytest tests/ -q.

Never commit (secrets live locally only)

  • .env, .env.* (keep .env.example with placeholders only)
  • cabinets.json — the local credential store (~/.marketplace-mcp/, chmod 600)
  • *.pem, *.key, *.p12, *.pfx, id_rsa, id_ed25519
  • credentials*.json, service-account*.json, token.json, tokens.json, secrets.json
  • *.ovpn, claude_desktop_config.json

.mcp.json IS tracked on purpose — it is the secret-free plugin distribution manifest. Its contents are verified by scan_mcp_config.py; never put a token in it.

Forbidden without explicit user confirmation

  • git push (confirm the diff first)
  • making a repo/issue/PR public with private context
  • printing secrets: cat .env, env, printenv, cat ~/.marketplace-mcp/cabinets.json
  • adding or changing MCP servers
  • weakening the safety gate, auth, or input validation just to make code work
  • installing packages suggested only from model memory (see below)

Dependency policy (trusted packages)

  1. Verify the package exists and is maintained before adding it.
  2. Prefer the standard library or already-present deps (mcp, httpx, pyyaml).
  3. CI runs pip-audit and OSV scanning; do not introduce HIGH-severity advisories.
  4. Never install hallucinated / typo-squat packages.

If a secret is exposed

Stop. Rotate/revoke it in the marketplace cabinet FIRST, then clean Git history. Marketplace keys are scoped and rotatable — rotation is the primary mitigation.

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. 11d ago First seen · 39 lines · 498 tokens per session scan C ace096b6f18f

Subscribe to this mod's changes

marketplace-mcp-my AGENTS.md is an instructions file published in the GitHub repository hehca42y1900/marketplace-mcp-my (0 stars, last pushed 1mo ago), licensed MIT. It adds 498 tokens to every session, about $0.0025 per session on Opus 5. A static security scan graded it C with 2 findings (asks for root, reads mcp configuration). It is 100% identical to marketplaces-mcp-ru AGENTS.md, differing in 0 lines, and is treated as a copy.

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