gh-auth-isolation

gh-auth-isolation is a skill for Claude Code, Codex from dotnet/maui-labs. It costs 20 tokens per session (1,537 once invoked), scanned A, a copy of gh-auth-isolation, MIT.

A procedure for working safely with more than one GitHub account, such as a company account and a personal account. GitHub is a service for hosting code and collaborating on changes.

In plain words
What is it for?
Use it before checking account access, switching identities, pushing to a personal fork, or creating pull requests outside a company organization.
Why use it?
It helps prevent commands from using the wrong account or credentials. This avoids failed pushes and accidental work in the wrong repository.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it before checking account access, switching identities, pushing to a personal fork, or creating pull requests outside a company organization.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dotnet/maui-labs/gh-auth-isolation
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 dotnet/maui-labs --skill gh-auth-isolation
Clone the repo
git clone --depth 1 https://github.com/dotnet/maui-labs

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 gh-auth-isolation

README.md
[![agentmods](https://agentmods.dev/badge/skills/dotnet/maui-labs/gh-auth-isolation/github.svg)](https://agentmods.dev/skills/dotnet/maui-labs/gh-auth-isolation)
Your own site
<a href="https://agentmods.dev/skills/dotnet/maui-labs/gh-auth-isolation"><img src="https://agentmods.dev/badge/skills/dotnet/maui-labs/gh-auth-isolation/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 gh-auth-isolation

Your own site · 80×15
<a href="https://agentmods.dev/skills/dotnet/maui-labs/gh-auth-isolation"><img src="https://agentmods.dev/badge/skills/dotnet/maui-labs/gh-auth-isolation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,537 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 100% 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 5.1 $0.00020 $0.01537
Opus 5 $0.00010 $0.00768
Sonnet 5 $0.00004 $0.00307
Haiku 4.5 $0.00002 $0.00154

Measured 9d ago against content hash d25581dbcd64, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

gh-auth-isolation 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 9d 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.

Origin

This is a copy

100% identical to gh-auth-isolation — 366 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.

src/Comet/.copilot/skills/gh-auth-isolation/SKILL.md · 184 lines

How it starts

The opening of the file, as written. The whole thing — 184 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Context

Many developers use GitHub through an Enterprise Managed User (EMU) account at work while maintaining a personal GitHub account for open-source contributions. AI agents spawned by Squad inherit the shell's default gh authentication — which is usually the EMU account. This causes failures when agents try to push to personal repos, create PRs on forks, or interact with resources outside the enterprise org.

This skill teaches agents how to detect the active identity, switch contexts safely, and avoid mixing credentials across operations.

Patterns

Detect Current Identity

Before any GitHub operation, check which account is active:

gh auth status

Look for:

  • Logged in to github.com as USERNAME — the active account
  • Token scopes: ... — what permissions are available
  • Multiple accounts will show separate entries

Extract a Specific Account's Token

When you need to operate as a specific user (not the default):

# Get the personal account token (by username)
gh auth token --user personaluser

# Get the EMU account token
gh auth token --user corpalias_enterprise

Use case: Push to a personal fork while the default gh auth is the EMU account.

Push to Personal Repos from EMU Shell

The most common scenario: your shell defaults to the EMU account, but you need to push to a personal GitHub repo.

# 1. Extract the personal token
$token = gh auth token --user personaluser

# 2. Push using token-authenticated HTTPS
git push https://personaluser:[email protected]/personaluser/repo.git branch-name

Why this works: gh auth token --user reads from gh's credential store without switching the active account. The token is used inline for a single operation and never persisted.

Create PRs on Personal Forks

When the default gh context is EMU but you need to create a PR from a personal fork:

# Option 1: Use --repo flag (works if token has access)
gh pr create --repo upstream/repo --head personaluser:branch --title "..." --body "..."

# Option 2: Temporarily set GH_TOKEN for one command
$env:GH_TOKEN = $(gh auth token --user personaluser)
gh pr create --repo upstream/repo --head personaluser:branch --title "..."
Remove-Item Env:\GH_TOKEN

Read the full file on GitHub · 184 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. 9d ago First seen · 184 lines · 20 tokens per session scan A d25581dbcd64

Subscribe to this mod's changes

gh-auth-isolation is a skill published in the GitHub repository dotnet/maui-labs (213 stars, last pushed today), licensed MIT. It adds 20 tokens to every session and 1,537 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to gh-auth-isolation, differing in 366 lines, and is treated as a copy.

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