iosef: Skill for Claude Code

.claude/skills/release/SKILL.md

release is a skill for Claude Code from riwsky/iosef. It costs 63 tokens per session (691 once invoked), scanned A, original, MIT.

A release workflow for publishing new iosef versions. It updates the version, builds the software, creates a Git tag, and pushes the release to PyPI, Python’s package repository.

In plain words
What is it for?
Use it to release bug fixes or new features, verify the built version, create a v0.x.y Git tag, and publish the resulting package.
Why use it?
It keeps version numbers, builds, tags, and publishing steps consistent. It also avoids accidentally using release steps for ordinary code pushes.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

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

View source ↗ riwsky/iosef
Reuse

Borrowing it

Nothing to install: this file belongs to riwsky/iosef. 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/riwsky/iosef/main/.claude/skills/release/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/riwsky/iosef

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

README.md
[![agentmods](https://agentmods.dev/badge/skills/riwsky/iosef/release/github.svg)](https://agentmods.dev/skills/riwsky/iosef/release)
Your own site
<a href="https://agentmods.dev/skills/riwsky/iosef/release"><img src="https://agentmods.dev/badge/skills/riwsky/iosef/release/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

Your own site · 80×15
<a href="https://agentmods.dev/skills/riwsky/iosef/release"><img src="https://agentmods.dev/badge/skills/riwsky/iosef/release.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 691 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 $0.00063 $0.00691
Opus 5.5 $0.00025 $0.00276
Sonnet 5.5 $0.00013 $0.00138
Haiku 4.5 $0.00006 $0.00069

Measured 1mo ago against content hash c519344b4420, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

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 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.

.claude/skills/release/SKILL.md · 67 lines

How it starts

The opening of the file, as written. The whole thing — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Release Workflow

Versioning

We are pre-1.0. Always use v0.x.y versions. Do not tag v1.* until explicitly decided.

  • Patch (v0.x.Y): bug fixes, minor tweaks
  • Minor (v0.X.0): new features, new MCP tools, behavioral changes

Steps

  1. Bump serverVersion in Sources/iosef/Utilities.swift to the target semver.

  2. Build and verify:

    swift build -c release
    .build/release/iosef --version   # should print new version
    
  3. Push to main (if not already there). Use /jj-just-push-main or equivalent.

  4. Choose the version — check existing tags:

    git --git-dir=$(jj git root) tag -l 'v*'
    
  5. Tag and push the tag:

    # In a jj repo, use git directly for tagging:
    git --git-dir=$(jj git root) tag v{VERSION} {COMMIT_HASH}
    git --git-dir=$(jj git root) push origin v{VERSION}
    # Then fetch so jj sees the tag:
    jj git fetch
    

    If tagging the current jj working copy, find its git commit with jj log -r @ --no-graph -T commit_id.

  6. Monitor CI: The v* tag triggers .github/workflows/release.yaml, which builds arm64 and x86_64 binaries separately via SwiftPM, combines them with lipo into a universal2 binary, and publishes the wheel to PyPI.

  7. Verify on PyPI once the workflow completes:

    pip index versions iosef
    

Checklist

  • serverVersion bumped in Sources/iosef/Utilities.swift
  • swift build -c release succeeds
  • iosef --version prints new version
  • Changes pushed to main
  • Version is v0.x.y (pre-1.0!)
  • Tag points to the correct commit
  • Tag pushed to origin
  • jj git fetch run after tag push
  • GitHub Actions workflow running/passed
  • PyPI shows the new version

Gotchas

  • The serverVersion constant is used by both iosef --version and the MCP server's version field. Always bump it.
  • In jj repos, jj doesn't manage git tags — use git --git-dir=$(jj git root) for tag operations.
  • CI builds each arch separately via SwiftPM (swift build -c release), not --arch flags (which trigger Xcode's build system and break on CI).

Read the full file on GitHub · 67 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. 1mo ago First seen · 67 lines · 63 tokens per session scan A c519344b4420

Subscribe to this mod's changes

release is a skill published in the GitHub repository riwsky/iosef (19 stars, last pushed yesterday), licensed MIT. It adds 63 tokens to every session and 691 once invoked, about $0.0003 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.

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