# Build Git Protocol Operations

Implementing Git-compatible repository behavior requires correct object, packfile, ref, and smart HTTP patterns. This skill guides Claude, Codex, and Claude Code through Rust examples using gitoxide.

## Install

```bash
npx skillstore add abdelstark/git-protocol
```

## Metadata

- - Status: approved
- - Slug: abdelstark-git-protocol
- - Version: 1.0.0
- - Author: AbdelStark
- - GitHub username: AbdelStark
- - License: MIT
- - Repository: https://github.com/AbdelStark/guts/tree/main/.claude/skills/git-protocol
- - Ref: main
- - Supported tools: Claude, Codex, Claude Code
- - Risk level: low
- - Risk factors: external\_commands, network
- - Quality score: 78
- - Quality tier: bronze
- - Public page: https://skillstore.pages.dev/skills/abdelstark-git-protocol
- - Manifest: https://skillstore.pages.dev/api/skills/abdelstark-git-protocol/manifest

## Capabilities

- Shows how to open or create bare repositories with gitoxide.
- Outlines Git object reading and blob writing patterns.
- Provides commit construction examples with signatures and parent commits.
- Describes smart HTTP upload-pack and receive-pack handler structure.
- Covers packfile generation and reference update patterns.
- Includes a Guts-specific extended commit verification example.

## Use Cases

- Implement Git Storage Services: Use the patterns to design repository object storage, commits, and reference updates in a Rust service.
- Prototype Smart HTTP Endpoints: Map Git upload-pack, receive-pack, and info refs behavior to web handlers before building production code.
- Review Gitoxide Integration Plans: Compare planned repository operations against documented gitoxide concepts and missing hardening work.

## Prompt Templates

### Explain the Gitoxide Flow

```
Using the git-protocol skill, explain the repository, object, commit, packfile, and reference flow in plain language.
```

### Plan Repository Operations

```
Use the git-protocol skill to plan Rust repository operations for opening repositories, writing blobs, creating commits, and updating refs.
```

### Design Smart HTTP Handlers

```
Use the git-protocol skill to design upload-pack and receive-pack handlers with authentication, validation, and request size controls.
```

### Audit a Gitoxide Design

```
Review my gitoxide-based repository service design against the git-protocol skill. Identify missing protocol behavior, security controls, and test coverage.
```

## Limitations

- Does not provide a complete compilable Rust crate.
- Leaves several helper functions and error types undefined.
- Does not include tests, benchmarks, or deployment configuration.
- Requires production hardening for authentication, request limits, and repository path validation.

## Best Practices

- Treat all Git HTTP request bodies as untrusted input.
- Use atomic reference updates when applying push commands.
- Add tests for object parsing, packfile handling, permissions, and ref conflicts.

## Anti Patterns

- Do not expose receive-pack without authentication and authorization.
- Do not trust owner or repository path values without validation.
- Do not apply packfiles before validating object integrity and size limits.

## Security Audit

- - Safe to publish: true
- - Audited at: 2026-06-28T04:39:47.055\+00:00
- - Summary: Static analysis reported external command, network, weak cryptography, and reconnaissance patterns in SKILL.md. Review found these are Markdown and Rust implementation examples, not executable skill scripts or malicious behavior. The Git HTTP receive-pack example is legitimate but should be implemented with authentication, input limits, and repository path validation.

## Stats

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- - Downloads: 6
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