coding-tools-mcp: Instructions file for Codex

AGENTS.md

coding-tools-mcp AGENTS.md is an instructions file for Codex, OpenCode from xyTom/coding-tools-mcp. It costs 329 tokens per session, scanned A, original, Apache-2.0.

Repository instructions for Coding Tools MCP, a monorepo containing a Python tool server, desktop client, integrations, packages, benchmarks, and documentation. A monorepo is one repository containing several related projects.

In plain words
What is it for?
Use them when modifying the MCP server, desktop app, tunnels, Cloudflare worker, npm launcher, benchmarks, reports, scripts, or documentation.
Why use it?
They help developers change the correct project area while preserving public commands, import paths, data formats, and release behavior.

Instructions file for CodexOpenCode

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

This is xyTom/coding-tools-mcp's own configuration. It tells Codex and OpenCode how to work on coding-tools-mcp 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 coding-tools-mcp configures →

About the project

Coding Tools MCP is a model-neutral coding runtime that lets AI agents work with a codebase through the Model Context Protocol, an interface for connecting agents to external tools. It provides file search and reading, multi-file edits, command execution, interactive sessions, and Git operations within a workspace, with permission controls for potentially risky actions. Its catalogue entry is an instruction for using this MCP server with compatible coding agents and clients.

xyTom/coding-tools-mcp · 1,222 stars · on GitHub · coding-tools-mcp.github.io

Reuse

Borrowing it

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

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README.md
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Your own site
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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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Your own site · 80×15
<a href="https://agentmods.dev/instructions/xytom/coding-tools-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/xytom/coding-tools-mcp/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 329 This file is loaded in full into every session.
When invoked 329 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 $0.00329 $0.00329
Opus 5.5 $0.00132 $0.00132
Sonnet 5.5 $0.00066 $0.00066
Haiku 4.5 $0.00033 $0.00033

Measured 2mo ago against content hash 6cdb491c8d9e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

coding-tools-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 · 25 lines

What it actually says

Coding Tools MCP repository guide

This repository is a monorepo. Keep changes inside the narrowest owning subtree and avoid creating cross-component coupling unless the feature requires it.

Repository map

  • coding_tools_mcp/: core Python MCP runtime and public server behavior.
  • apps/desktop-client/: desktop client UI and desktop runtime integration.
  • integrations/tunnels/: user-facing tunnel launchers for remote MCP access.
  • infra/cloudflare/sandbox-control/: Cloudflare Worker control plane paired with .github/workflows/start-sandbox.yml.
  • packages/npm-launcher/: thin npm launcher for the Python package.
  • media/promo-video/: Remotion source for the project promo video.
  • benchmarks/: benchmark runners and fixtures.
  • reports/: generated/published benchmark and compliance results.
  • docs/: user, contributor, architecture, and reference documentation.
  • scripts/: repository maintenance, validation, installation, release, and report-generation scripts. Do not put user-facing runtime integrations here.

Standing rules

  1. Preserve public CLI names, Python import paths, protocol schemas, and release behavior unless a task explicitly requires a breaking change.
  2. Keep one authoritative home for each fact; link to it instead of copying long explanations between documents.
  3. Changes to infra/cloudflare/sandbox-control/ and .github/workflows/start-sandbox.yml may form one interface contract. Update and validate them together.
  4. Prefer subtree-specific instructions when present.
  5. Run the narrowest relevant checks first, then broader checks when tooling is available.
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 · 329 tokens per session scan A 6cdb491c8d9e

Subscribe to this mod's changes

coding-tools-mcp AGENTS.md is an instructions file published in the GitHub repository xyTom/coding-tools-mcp (1,222 stars, last pushed 8d ago), licensed Apache-2.0. It adds 329 tokens to every session, about $0.0013 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 2026-08-30.

Related

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deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode