copilot-tooling: Skill for Claude Code

.agents/skills/implement/SKILL.md

implement is a skill for Claude Code, Codex from grehnen/copilot-tooling. It costs 16 tokens per session (97 once invoked), scanned A, a copy of implement, MIT.

Instructions for implementing work described in a specification or tickets. They recommend TDD, meaning writing tests that describe the expected behavior before or alongside the code, and require checks, review, and a commit.

In plain words
What is it for?
Building ticketed features or fixes, running type checks and tests, reviewing the completed changes, and committing them.
Why use it?
They provide a repeatable delivery process that catches errors during development and adds a final code review before the work is saved to the current branch.

Skill for Claude CodeCodex

Written for Claude Code and Codex: disable-model-invocation in frontmatter, but also agents/openai.yaml present. Also seen: installed under .agents/ (shared by several agents).

This is grehnen/copilot-tooling's own configuration. It tells Claude Code and Codex how to work on copilot-tooling 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 copilot-tooling configures →

Reuse

Borrowing it

Nothing to install: this file belongs to grehnen/copilot-tooling. 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/grehnen/copilot-tooling/main/.agents/skills/implement/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/grehnen/copilot-tooling

Made for: Claude Code, Codex.

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 implement

README.md
[![agentmods](https://agentmods.dev/badge/skills/grehnen/copilot-tooling/implement/github.svg)](https://agentmods.dev/skills/grehnen/copilot-tooling/implement)
Your own site
<a href="https://agentmods.dev/skills/grehnen/copilot-tooling/implement"><img src="https://agentmods.dev/badge/skills/grehnen/copilot-tooling/implement/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 implement

Your own site · 80×15
<a href="https://agentmods.dev/skills/grehnen/copilot-tooling/implement"><img src="https://agentmods.dev/badge/skills/grehnen/copilot-tooling/implement.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 97 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 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 $0.00016 $0.00097
Opus 5.5 $0.00006 $0.00039
Sonnet 5.5 $0.00003 $0.00019
Haiku 4.5 $0.00002 $0.00010

Measured 1mo ago against content hash 6d3fd9e83b8f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

implement 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 1mo 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.

Origin

This is a copy

100% identical to implement — 6 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/skills/implement/SKILL.md · 16 lines

What it actually says

Implement the work described by the user in the spec or tickets.

Use /tdd where possible, at pre-agreed seams.

Run typechecking regularly, single test files regularly, and the full test suite once at the end.

Once done, use /code-review to review the work.

Commit your work to the current branch.

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 1mo ago First seen · 16 lines · 16 tokens per session scan A 6d3fd9e83b8f

Subscribe to this mod's changes

implement is a skill published in the GitHub repository grehnen/copilot-tooling (2 stars, last pushed 2mo ago), licensed MIT. It adds 16 tokens to every session and 97 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to implement, differing in 6 lines, and is treated as a copy.

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