no-mistakes: Skill for Claude Code

.agents/skills/release-signing/SKILL.md

release-signing is a skill for Claude Code from kunchenguid/no-mistakes. It costs 21 tokens per session (391 once invoked), scanned A, original, MIT.

A set of instructions for macOS release signing. It defines how application files are signed and checked before being published.

In plain words
What is it for?
Changing signing settings, verifying release files, and maintaining the macOS release workflow.
Why use it?
It keeps release signing consistent and prevents incorrectly signed files from being shipped.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: installed under .agents/ (shared by several agents).

This is kunchenguid/no-mistakes's own configuration. It tells Claude Code how to work on no-mistakes 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 no-mistakes configures →

About the project

no-mistakes is a local Git proxy that validates changes in an isolated worktree before forwarding a push to the real remote and opening a pull request. It is for developers and coding agents that want automated checks, safe fixes, CI repair, and human review before changes are published.

kunchenguid/no-mistakes · 8,369 stars · on GitHub · kunchenguid.github.io

Reuse

Borrowing it

Nothing to install: this file belongs to kunchenguid/no-mistakes. 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/kunchenguid/no-mistakes/main/.agents/skills/release-signing/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/kunchenguid/no-mistakes

Made for: Claude Code.

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 release-signing

README.md
[![agentmods](https://agentmods.dev/badge/skills/kunchenguid/no-mistakes/release-signing/github.svg)](https://agentmods.dev/skills/kunchenguid/no-mistakes/release-signing)
Your own site
<a href="https://agentmods.dev/skills/kunchenguid/no-mistakes/release-signing"><img src="https://agentmods.dev/badge/skills/kunchenguid/no-mistakes/release-signing/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 release-signing

Your own site · 80×15
<a href="https://agentmods.dev/skills/kunchenguid/no-mistakes/release-signing"><img src="https://agentmods.dev/badge/skills/kunchenguid/no-mistakes/release-signing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 391 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00021 $0.00391
Opus 5 $0.00010 $0.00196
Sonnet 5 $0.00004 $0.00078
Haiku 4.5 $0.00002 $0.00039

Measured 10d ago against content hash e70e01fb8170, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

release-signing 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 10d 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/skills/release-signing/SKILL.md · 17 lines

What it actually says

macOS Release Signing (permanent identity)

  • Every official macOS release artifact - both darwin/arm64 and darwin/amd64 - is Developer ID Application signed on a macOS runner with a fixed identifier, hardened runtime, secure timestamp, and no entitlements, then strictly verified before it is archived or checksummed; the Linux and Windows release paths are unchanged.
  • The executable identifier com.kunchenguid.no-mistakes and Team ID 9T2J7MNUP9 are the permanent Developer ID identity and MUST NEVER change: they are the invariant of the identity-based designated requirement that lets macOS permission grants survive no-mistakes update, so changing either resets every grant once.
  • Signing runs only in the darwin build job gated behind the release-signing GitHub environment; the certificate is the base64 CSC_LINK secret unlocked with CSC_KEY_PASSWORD, imported into an ephemeral keychain with a runtime-generated password that is deleted on success and failure, and no other job may reference those secrets.
  • Signing happens before tarball creation and checksum generation, and the verify gate fails the release closed on any missing or ambiguous signature, wrong Team ID, non-permanent identifier, content-based (cdhash) requirement, missing hardened runtime or timestamp, or wrong architecture.
  • Mechanics live in .github/workflows/release.yml; the contract is pinned by the root TestReleaseWorkflow* static tests in workflow_release_signing_test.go, and secret values are never recorded here or in any test fixture.
  • Notarization, stapling, a PKG, Homebrew, and universal binaries are intentionally out of scope for this phase.
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. 10d ago First seen · 17 lines · 21 tokens per session scan A e70e01fb8170

Subscribe to this mod's changes

release-signing is a skill published in the GitHub repository kunchenguid/no-mistakes (8,369 stars, last pushed yesterday), licensed MIT. It adds 21 tokens to every session and 391 once invoked, about $0.0001 per session on Opus 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.