r3bl-open-core: Skill for Claude Code

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

release-crate is a skill for Claude Code, Codex from r3bl-org/r3bl-open-core. It costs 34 tokens per session (1,355 once invoked), scanned A, original, Apache-2.0.

A release checklist for publishing a Rust package, called a crate, to crates.io. It also creates the related changelog, Git tag, and GitHub release.

In plain words
What is it for?
Use it to release a workspace crate after changes are tested, including checking Cargo.toml, choosing the version, and publishing the release records.
Why use it?
It keeps the version, package name, notes, and release records aligned, reducing missed steps when shipping a crate.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: names the AskUserQuestion tool; installed under .agents/ (shared by several agents).

This is r3bl-org/r3bl-open-core's own configuration. It tells Claude Code and Codex how to work on r3bl-open-core 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 r3bl-open-core configures →

Reuse

Borrowing it

Nothing to install: this file belongs to r3bl-org/r3bl-open-core. 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/r3bl-org/r3bl-open-core/main/.agents/skills/release-crate/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/r3bl-org/r3bl-open-core

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 release-crate

README.md
[![agentmods](https://agentmods.dev/badge/skills/r3bl-org/r3bl-open-core/release-crate/github.svg)](https://agentmods.dev/skills/r3bl-org/r3bl-open-core/release-crate)
Your own site
<a href="https://agentmods.dev/skills/r3bl-org/r3bl-open-core/release-crate"><img src="https://agentmods.dev/badge/skills/r3bl-org/r3bl-open-core/release-crate/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-crate

Your own site · 80×15
<a href="https://agentmods.dev/skills/r3bl-org/r3bl-open-core/release-crate"><img src="https://agentmods.dev/badge/skills/r3bl-org/r3bl-open-core/release-crate.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,355 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 warn 7 Sept 2026
SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Tool Misuse · line 115
    Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
    Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
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 $0.00034 $0.01355
Opus 5 $0.00017 $0.00678
Sonnet 5 $0.00007 $0.00271
Haiku 4.5 $0.00003 $0.00136

Measured 10d ago against content hash 0ad992d852dd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

release-crate 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-crate/SKILL.md · 183 lines

How it starts

The opening of the file, as written. The whole thing — 183 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Crate Release

When to Use

  • When the user says "release", "publish", or invokes /release <crate>
  • The argument is the crate directory name: build-infra, tui, cmdr, analytics_schema
    • The crate name begins with r3bl- prefix for binary crates and r3bl_ prefix for library crates - the prefix is applied to the folder name of the crate (e.g., r3bl_tui crate is in tui folder, and r3bl-cmdr crate is in the cmdr folder).
    • Always look at the Cargo.toml file of the crate to verify the crate name and version before invoking the release skill.

Prerequisites

Before starting a release, verify:

  • All code changes are complete and tested
  • ./check.fish --full passes (or equivalent checks have been run recently)
  • You know the new version number (ask the user if not specified)

Release Workflow

Follow these steps in order. Reference docs/release-guide.md for canonical examples.

Step 1. Determine crate and version

  • Identify the crate directory from the argument
  • Read <crate>/Cargo.toml to find the current version
  • Determine the new version (ask the user if not specified)
  • Identify if this is a binary crate (build-infra, cmdr) or library crate (tui, analytics_schema)

Step 2. Bump version in <crate>/Cargo.toml

  • Update the version field to the new version

Step 3. Update CHANGELOG.md

  • Add the new version entry under the crate's section (before existing entries)
  • Follow the existing format: ### vX.Y.Z (YYYY-MM-DD) with summary, Fixed/Added/Changed sections
  • Update the TOC at the top of the file to include the new entry

Step 4. Update docs/release-guide.md

  • Update the version number in the script block for the crate being released
  • Update the git commit and tag lines to reflect the new version

Step 5. Run build, test, docs, clippy, fmt

./check.fish --full

Or if check.fish is unavailable, run manually:

cd <crate>
cargo build && cargo test && cargo doc --no-deps && cargo clippy --fix --allow-dirty --allow-staged && cargo fmt --all

Read the full file on GitHub · 183 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. 10d ago First seen · 183 lines · 34 tokens per session scan A 0ad992d852dd

Subscribe to this mod's changes

release-crate is a skill published in the GitHub repository r3bl-org/r3bl-open-core (483 stars, last pushed today), licensed Apache-2.0. It adds 34 tokens to every session and 1,355 once invoked, about $0.0002 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.