open-source-playbook

open-source-playbook is a skill for Claude Code from the-open-agent/oss-skills. It costs 131 tokens per session (1,352 once invoked), scanned A, original, Apache-2.0.

A guide for managing an open-source software project, meaning code that is publicly available for others to use and contribute to. It first assesses the repository and then directs the work to more specific guidance.

In plain words
What is it for?
Reviewing a repository’s README, contribution files, workflows, package manifest, commits, issues, pull requests, license, and contributor activity to decide what open-source work matters next.
Why use it?
It helps identify the project’s current stage and the main obstacles before recommending changes, using repository evidence instead of guesses.

Skill for Claude Code

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

Part of the oss-skills plugin — 18 skills shipped together

Good fit Reviewing a repository’s README, contribution files, workflows, package manifest, commits, issues, pull requests, license, and contributor activity to decide what open-source work matters next.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/the-open-agent/oss-skills/open-source-playbook
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.

Any agent
npx skills add the-open-agent/oss-skills --skill open-source-playbook
Clone the repo
git clone --depth 1 https://github.com/the-open-agent/oss-skills

Made for: Claude Code.

Or install oss-skills, the plugin that ships this one along with the rest of its 18 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 open-source-playbook

README.md
[![agentmods](https://agentmods.dev/badge/skills/the-open-agent/oss-skills/open-source-playbook/github.svg)](https://agentmods.dev/skills/the-open-agent/oss-skills/open-source-playbook)
Your own site
<a href="https://agentmods.dev/skills/the-open-agent/oss-skills/open-source-playbook"><img src="https://agentmods.dev/badge/skills/the-open-agent/oss-skills/open-source-playbook/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 open-source-playbook

Your own site · 80×15
<a href="https://agentmods.dev/skills/the-open-agent/oss-skills/open-source-playbook"><img src="https://agentmods.dev/badge/skills/the-open-agent/oss-skills/open-source-playbook.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 131 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,352 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 $0.00131 $0.01352
Opus 5 $0.00066 $0.00676
Sonnet 5 $0.00026 $0.00270
Haiku 4.5 $0.00013 $0.00135

Measured 10d ago against content hash e621ed0606b9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

open-source-playbook 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.

skills/open-source-playbook/SKILL.md · 106 lines

How it starts

The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Open Source Playbook

The router. Your job here is diagnosis before action: figure out what stage the project is actually in, name the one or two bottlenecks that matter, and hand off to the specific skills. Do not attempt to do all of open source in one pass.

Step 1 — Read the repo before advising

Never advise from the prompt alone. Spend two minutes on ground truth:

ls -la                                    # top-level hygiene files
git log --oneline -20                     # commit style, cadence, bus factor
git shortlog -sn | head -20               # contributor distribution
gh repo view --json stargazerCount,forkCount,openIssues,createdAt,licenseInfo 2>/dev/null
gh issue list --limit 20 --state open 2>/dev/null
gh pr list --limit 20 --state open 2>/dev/null

Then read README.md, CONTRIBUTING.md, .github/workflows/, and the package manifest. If gh is unavailable or unauthenticated, work from the local clone and say so — do not fabricate repo statistics.

Step 2 — Locate the stage

Stage Signal Bottleneck is almost always
0. Pre-release No public repo, or code exists but no license/README Positioning and legal basics
1. Published, unknown Public, <50 stars, single contributor The README and a working install path
2. Discovered Traffic arriving, issues opening, nobody contributing code Contributor onboarding and docs
3. Growing Multiple contributors, PR queue forming Automation, review throughput, triage
4. Depended-upon Downstream users, breakage complaints API stability, release discipline, security
5. Institutional Many maintainers, org-scale Governance, sustainability, succession

Most projects are one stage behind where their owner thinks they are. Calibrate on evidence (issue volume, external PRs, download counts), not ambition.

Step 3 — Route

The user's goal Skill to load
Start a repo from nothing repo-bootstrap
Pick a license, handle CLA/DCO, vendored code license-and-legal
Nobody understands what this does readme-that-converts
Docs sprawl, users ask answered questions docs-architecture
Public interface design, stability guarantees api-design
Test suite is slow, flaky, or missing testing-strategy
Review an incoming PR code-review
Big rewrite without breaking users refactor-safely
Performance claims, benchmark suite performance-benchmarking
CI is slow, flaky, or absent ci-pipelines
Versioning, changelog, publishing release-engineering
SECURITY.md, provenance, scorecard, CVEs supply-chain-security
Dependency bloat, upgrade churn dependency-hygiene
Issue backlog is unmanageable issue-triage
No one contributes; first PRs stall contributor-experience
Launch, announce, grow adoption launch-and-growth
Decision-making, burnout, funding, succession governance-and-sustainability

Read the full file on GitHub · 106 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 · 106 lines · 131 tokens per session scan A e621ed0606b9

Subscribe to this mod's changes

open-source-playbook is a skill published in the GitHub repository the-open-agent/oss-skills (5 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 131 tokens to every session and 1,352 once invoked, about $0.0007 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 2026-08-31.

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