oss-skills

oss-skills is a plugin for Claude Code from the-open-agent/oss-skills. Its manifest loads nothing; the 18 skills it bundles cost 1,937 tokens per session together, scanned A, original, Apache-2.0.

A collection of 18 skills for creating and maintaining open-source software. Open source is software whose code is shared so people can inspect, use, change, and contribute to it.

In plain words
What is it for?
It helps with repository setup, API design, testing, continuous integration, releases, supply-chain security, documentation, issue triage, contributor experience, project launch, and governance.
Why use it?
It groups guidance for the many recurring tasks around an open-source project, from starting the repository to handling releases, security, and contributors.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit It helps with repository setup, API design, testing, continuous integration, releases, supply-chain security, documentation, issue triage, contributor experience, project launch, and governance.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add the-open-agent/oss-skills/plugin install oss-skills
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/the-open-agent/oss-skills

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 oss-skills

README.md
[![agentmods](https://agentmods.dev/badge/plugins/the-open-agent/oss-skills/oss-skills.svg)](https://agentmods.dev/plugins/the-open-agent/oss-skills/oss-skills)
Your own site
<a href="https://agentmods.dev/plugins/the-open-agent/oss-skills/oss-skills"><img src="https://agentmods.dev/badge/plugins/the-open-agent/oss-skills/oss-skills.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 18 skills cost 1,937 tokens a session between them.
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.
Security

Grade A, and why

oss-skills 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 7d 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-plugin/plugin.json · 21 lines

What it actually says

{
  "name": "oss-skills",
  "description": "18 skills for open-source development: bootstrapping repos, API design, testing, CI, releases, supply-chain security, docs, triage, contributor experience, launch, and governance.",
  "version": "0.1.0",
  "homepage": "https://github.com/the-open-agent/oss-skills",
  "repository": "https://github.com/the-open-agent/oss-skills",
  "license": "Apache-2.0",
  "keywords": [
    "open-source",
    "skills",
    "claude-code",
    "agent-skills",
    "maintainer",
    "github",
    "ci",
    "release-engineering",
    "supply-chain-security",
    "documentation"
  ]
}
Files

What ships with it

1 file beside plugin.json 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. 7d ago First seen · 21 lines scan A de72565f41e9

Subscribe to this mod's changes

oss-skills is a plugin published in the GitHub repository the-open-agent/oss-skills (5 stars, last pushed 1mo ago), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.