mantle: Skill for Claude Code

.agent/skills/mantle-release/SKILL.md

mantle-release is a skill for Claude Code from aotter/mantle. It costs 0 tokens per session (895 once invoked), scanned A, original, Apache-2.0.

A release procedure for Mantle projects, including version changes, npm publishing, release tags, recovery, and certain Landing releases. Mantle is the project’s release-managed Core and Starter software.

In plain words
What is it for?
Use it when bumping Mantle versions, publishing packages, creating Core or Starter tags, recovering a release, or handling an explicitly approved Landing release.
Why use it?
It prevents public versions and tags from being changed inconsistently or release steps from bypassing the approved controller. It also identifies the files and pinned commits that must be checked first.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

This is aotter/mantle's own configuration. It tells Claude Code how to work on mantle 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 mantle configures →

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is node scripts/check-packed-consumer.mjs --self-test.

Part of the mantle plugin — 8 skills shipped together

Reuse

Borrowing it

Nothing to install: this file belongs to aotter/mantle. 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/aotter/mantle/develop/.agent/skills/mantle-release/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/aotter/mantle

Made for: Claude Code.

Or install mantle, the plugin that ships this one along with the rest of its 8 skills.

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 mantle-release

README.md
[![agentmods](https://agentmods.dev/badge/skills/aotter/mantle/mantle-release.svg)](https://agentmods.dev/skills/aotter/mantle/mantle-release)
Your own site
<a href="https://agentmods.dev/skills/aotter/mantle/mantle-release"><img src="https://agentmods.dev/badge/skills/aotter/mantle/mantle-release.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 895 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 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 $0.00000 $0.00895
Opus 5 $0.00000 $0.00447
Sonnet 5 $0.00000 $0.00179
Haiku 4.5 $0.00000 $0.00089

Measured 3d ago against content hash 8e3c78ee7113, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

mantle-release 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 3d 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.

.agent/skills/mantle-release/SKILL.md · 100 lines

How it starts

The opening of the file, as written. The whole thing — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Mantle Release Skill

Use this skill for a Mantle version bump, npm publish, Core or Starter tag, release recovery, or an explicit Landing release caused by Core.

Required reading

Before changing a version or running the controller, read completely:

  • docs/release-process.md
  • .github/release.yml
  • root and workspace package.json files
  • all four agent plugin manifests
  • .agents/plugins/marketplace.json
  • .github/workflows/release.yml

Inspect the exact mantle-starters and mantle-landing commits pinned by the controller. Inspect Landing deployment configuration only when deploy_landing=true is explicitly in scope.

When changing release automation, follow docs/release-process.md section "Changing release automation" before editing workflow code.

Contract

Public versions and tags are immutable. .github/workflows/release.yml is the only release controller. Do not push a release tag, invoke the Starter worker, or repair public state manually.

For the current pre-v0.1 alpha cadence:

  • merge a reviewed release PR into develop;
  • dispatch the controller from that merge commit;
  • leave deploy_landing=false unless Landing was separately reviewed.

The controller gates source and exact-packed Starter before tagging Core, publishes and verifies the registries, waits for the Starter's exact tagged merge, then tests the Starter, clean-created projects, and reviewed Landing consumer before public channel promotion and the Core GitHub Release. Starter does not promote main, backport, or dispatch Landing.

Prepare the release PR

  1. Fetch Core, Starter, and Landing remotes. Prove the intended version and both tags are unused.
  2. Preview GitHub's generated notes since the previous tag. Correct PR metadata and apply skip-release-notes to the release-only PR.
  3. Align every workspace package, plugin manifest, and marketplace ref to the exact version.
  4. Pin the controller to the reviewed Starter and Landing develop commits, and Core CI to the same Starter commit. Never substitute a branch or floating tag.
  5. Audit downstream literals when an SDK type or closed enum changed.
  6. Run:

Read the full file on GitHub · 100 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.

  1. 3d ago Changed · +5 lines 8e3c78ee7113
  2. 7d ago First seen · 95 lines · 0 tokens per session scan A 1caa33e4bb81

Subscribe to this mod's changes

mantle-release is a skill published in the GitHub repository aotter/mantle (4 stars, last pushed yesterday), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 895 tokens. 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.

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