github-auth

github-auth is a skill for Claude Code, Codex from fifeqqs1/MortyClaw. It costs 48 tokens per session (2,035 once invoked), scanned F, a copy of github-auth, MIT.

Instructions for setting up GitHub authentication for an agent using Git or the GitHub CLI, a command-line tool for GitHub. It covers HTTPS tokens, SSH keys, credential helpers, and checking which method is available.

In plain words
What is it for?
Checking authentication, configuring GitHub access, and selecting a Git-only or GitHub CLI login method.
Why use it?
It removes the setup confusion that can prevent an agent from accessing repositories, pull requests, issues, or CI.

Skill for Claude CodeCodex

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/fifeqqs1/mortyclaw/github-auth
Any agent
npx skills add fifeqqs1/MortyClaw --skill github-auth
Clone the repo
git clone --depth 1 https://github.com/fifeqqs1/MortyClaw

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 github-auth

README.md
[![agentmods](https://agentmods.dev/badge/skills/fifeqqs1/mortyclaw/github-auth.svg)](https://agentmods.dev/skills/fifeqqs1/mortyclaw/github-auth)
Your own site
<a href="https://agentmods.dev/skills/fifeqqs1/mortyclaw/github-auth"><img src="https://agentmods.dev/badge/skills/fifeqqs1/mortyclaw/github-auth.svg" alt="Measured on agentmods" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,035 The whole file, excluding the scripts and references it only reads on demand.
Security scan F 4 findings. Scan, not verified.
Origin 86% copy Near-identical to another mod 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 $0.00048 $0.02035
Opus 5 $0.00024 $0.01018
Sonnet 5 $0.00010 $0.00407
Haiku 4.5 $0.00005 $0.00203

Measured 4d ago against content hash 994ddea494c0, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade F, and why

github-auth scanned grade F with 4 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 1 executable file (scripts/gh-env.sh), 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.

Enumerates the file system for secretshighData exfiltration

Searching home directories for .env, .ssh, .aws or credential files is reconnaissance for credential theft.

ls -la ~/.ssh/id_*.pub 2>/dev/null || echo "No SSH keys found"

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

3. If `gh` is not installed → use "git-only" method below (no sudo needed)

Reaches for credential fileshighPrivilege escalation

SSH keys, cloud credentials, git-credentials, .npmrc, /etc/shadow: reading these is how a config file becomes a credential leak.

ssh-keygen -t ed25519 -C "[email protected]" -f ~/.ssh/id_ed25519 -N ""

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

When `gh` is not available, you can still access the full GitHub API using `curl` with a personal access token. This is how the other GitHub skills implement their fallbacks.
Origin

This is a copy

86% identical to github-auth — 23 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

workspace/office/skills/github-auth/SKILL.md · 249 lines

How it starts

The opening of the file, as written. The whole thing — 249 lines — stays where its author put it; the contents beside it link to each section on GitHub.

GitHub Authentication Setup

This skill sets up authentication so the agent can work with GitHub repositories, PRs, issues, and CI. It covers two paths:

  • git (always available) — uses HTTPS personal access tokens or SSH keys
  • gh CLI (if installed) — richer GitHub API access with a simpler auth flow

In MortyClaw dynamic-skill run mode, shell commands run inside workspace/office and cannot use ~, absolute paths, or ... Store optional local secrets in workspace/office/.mortyclaw/.env if you want this skill to read them during run mode.

Detection Flow

When a user asks you to work with GitHub, run this check first:

# Check what's available
git --version
gh --version 2>/dev/null || echo "gh not installed"

# Check if already authenticated
gh auth status 2>/dev/null || echo "gh not authenticated"
git config --global credential.helper 2>/dev/null || echo "no git credential helper"

Decision tree:

  1. If gh auth status shows authenticated → you're good, use gh for everything
  2. If gh is installed but not authenticated → use "gh auth" method below
  3. If gh is not installed → use "git-only" method below (no sudo needed)

Method 1: Git-Only Authentication (No gh, No sudo)

This works on any machine with git installed. No root access needed.

Option A: HTTPS with Personal Access Token (Recommended)

This is the most portable method — works everywhere, no SSH config needed.

Step 1: Create a personal access token

Tell the user to go to: https://github.com/settings/tokens

  • Click "Generate new token (classic)"
  • Give it a name like "mortyclaw"
  • Select scopes:
    • repo (full repository access — read, write, push, PRs)
    • workflow (trigger and manage GitHub Actions)
    • read:org (if working with organization repos)
  • Set expiration (90 days is a good default)
  • Copy the token — it won't be shown again

Step 2: Configure git to store the token

# Set up the credential helper to cache credentials
# "store" saves to ~/.git-credentials in plaintext (simple, persistent)
git config --global credential.helper store

# Now do a test operation that triggers auth — git will prompt for credentials
# Username: <their-github-username>
# Password: <paste the personal access token, NOT their GitHub password>
git ls-remote https://github.com/<their-username>/<any-repo>.git

Read the full file on GitHub · 249 lines

Files

What ships with it

1 file 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.

  1. 4d ago First seen · 249 lines · 48 tokens per session scan F 994ddea494c0

Subscribe to this mod's changes

github-auth is a skill published in the GitHub repository fifeqqs1/MortyClaw (24 stars, last pushed 3mo ago), licensed MIT. It adds 48 tokens to every session and 2,035 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it F with 4 findings (enumerates the file system for secrets, asks for root, reaches for credential files). It is 86% identical to github-auth, differing in 23 lines, and is treated as a copy.

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