A toolkit for managing GitHub repositories, which host source code and its collaboration history. It covers file changes, issues, pull requests, GitFlow, releases, CI/CD workflows, and repository configuration.

Use it to edit repository files, investigate project history, manage issues and pull requests, create CI/CD workflows, follow GitFlow, prepare releases, and generate configuration files.

It groups common repository operations into guided tasks with error handling and workflow rules. This reduces the risk of incomplete multi-file edits or inconsistent issue, pull-request, and release updates.

github — Skill for Claude Code and Codex by MassLab-SII: A toolkit for managing GitHub repositories, which host source…

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.

agentmods

npx agentmods add skills/masslab-sii/open-agent-skills/github

Any agent

npx skills add MassLab-SII/open-agent-skills --skill github

Clone the repo

git clone --depth 1 https://github.com/MassLab-SII/open-agent-skills

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/masslab-sii/open-agent-skills/github.svg)](https://agentmods.dev/skills/masslab-sii/open-agent-skills/github)

Your own site

<a href="https://agentmods.dev/skills/masslab-sii/open-agent-skills/github"><img src="https://agentmods.dev/badge/skills/masslab-sii/open-agent-skills/github.svg" alt="Measured on agentmods" height="20"></a>

Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 6,940 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

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.

Model	Per session	Once invoked
Fable 5	$0.00044	$0.06940
Opus 5	$0.00022	$0.03470
Sonnet 5	$0.00009	$0.01388
Haiku 4.5	$0.00004	$0.00694

Measured 4d ago against content hash b7c1135c692c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

github 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 4d ago.

The scan reads SKILL.md. This mod also ships 12 executable files (scripts/comment_manager.py, scripts/config_generator.py, scripts/file_editor.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

portable-skills/github/SKILL.md · 749 lines

How it starts

The opening of the file, as written. The whole thing — 749 lines — stays where its author put it; the contents beside it link to each section on GitHub.

GitHub Skill

This skill provides complete GitHub repository management capabilities using MCP GitHub tools.

Core Concepts

Skill: Meaningful combinations of multiple tool calls, encapsulated as independent Python scripts
Basic Tools: Single function calls for atomic operations via run_github_ops.py

I. Strategy: Skills vs Tools (Read First)

1. Skill-First Strategy

Always prioritize Skill Scripts over atomic tools. Skills encapsulate best practices and error handling.

Goal	Recommended Skill	Why?
Multi-file Edits	`file_editor.py batch`	Atomic commit; prevents partial updates
Content Investigation	`github_detective.py`	Unified interface for all investigation tasks
GitFlow Operations	`gitflow_manager.py`	Enforces naming conventions and correct workflow
PR + Label Management	`pr_manager.py update`	Handles labels atomically with PR updates
Issue + Label	`issue_manager.py update`	Handles labels atomically with issue updates
CI/CD Setup	`workflow_builder.py`	Full automated pipeline (branch → PR → merge)
Release Preparation	`release_manager.py`	Automates version bump, changelog, and merge
Project Config	`config_generator.py`	Standardized templates and configurations

2. When to Use Basic Tools

Only use run_github_ops.py when:

Unique Filtering: Need specific API filters not exposed by skills
One-off Read: Quick check of file SHA or content
Custom Operations: Operations not covered by any skill

3. GitHub Domain Coverage

This skill covers the following GitHub task categories:

Category	Covered By
File CRUD	`file_editor.py`, basic file tools
Issue Management	`issue_manager.py`
PR Management	`pr_manager.py`
Label Management	`issue_manager.py`, `pr_manager.py` (integrated)
Branch Management	`gitflow_manager.py`, basic branch tools
Commit Investigation	`github_detective.py`
PR Investigation	`github_detective.py`
Repository Exploration	`github_detective.py`
CI/CD Workflows	`workflow_builder.py`
Release Management	`release_manager.py`
Config Generation	`config_generator.py`

Read the full file on GitHub · 749 lines

Files

What ships with it

13 files beside SKILL.md 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.

4d ago First seen · 749 lines · 44 tokens per session scan A b7c1135c692c

Subscribe to this mod's changes

github is a skill published in the GitHub repository MassLab-SII/open-agent-skills (133 stars, last pushed 8mo ago), licensed Apache-2.0. It adds 44 tokens to every session and 6,940 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.

Commits Git and workflow Project management Releases

close-task-commit-push-pr

Close the active backlog task (detected from branch name), commit all changes, push to remote, and open a pull request. Use when the user says "close task and ship it", "close task commit push pr", or invokes /close-task-commit-push-pr.

devoxx/DevoxxGenieIDEAPlugin · 64 tokens

gh-workflow

GitHub CLI (gh) workflow automation for repository management, issue tracking, pull request workflows, GitHub Actions debugging, GitHub Projects (multi-repo boards with custom fields, views, and workflows), label management, secrets handling, and advanced API operations. Complements git-workflow by covering…

nasrulhazim/claude · 248 tokens

github