Claude Code GitHub MCP Permissions
Give Claude Code GitHub access only after you have named the boundary. A Claude Code MCP connection can let the agent read issues, inspect pull requests, and, if you allow it, create comments or branches in GitHub. In a Claude Code workshop, I would start this as a team convention: read first, write only where the workflow needs it, and keep the human merge decision human.
Start with read access to GitHub
Use the GitHub MCP server first for context gathering. Let Claude Code read the issue, pull request, changed files, checks, and review comments before it suggests code or comments.
This is already useful in a normal pull request workflow. For a repo with .github/workflows/test.yml, the agent can inspect the failing check, connect it to the PR diff, and tell you whether the failure is likely from the branch or from a flaky dependency.
If your team is still at the install step, use Add MCP Servers to Claude Code before deciding the permission policy. Setup and policy are different jobs.
Rolling this out in your team?
We train engineering teams on their own codebase in two days. Claude Code setup, shared rules and review included.
Decide which GitHub side effects belong to Claude
Do not treat all GitHub actions as the same risk. Reading a PR is not the same as posting a review comment, pushing a branch, editing an issue label, or merging.
For most Claude Code teams, I would allow read access broadly, allow draft comments narrowly, and block merge, release, and permission changes. That keeps the agent useful without turning GitHub into an unreviewed execution surface.
This fits the Review step in our methodology: the agent can gather evidence and draft a recommendation, but a person owns the decision that changes the shared repository state.
Choose the GitHub MCP boundary
Use one boundary per team, not one boundary per developer preference. The table below is the decision I would make explicit before enabling a Claude Code GitHub MCP workflow on a shared repo.
| Team need | Allow through MCP | Keep human-owned | Reason |
|---|---|---|---|
| Understand a pull request | Read PR metadata, changed files, checks, and comments | Final review decision | Reading context has high value and low blast radius. |
| Triage issues | Read issues and linked PRs | Closing issues, changing priority labels | Triage can inform work without rewriting the team's queue. |
| Draft a review | Prepare a comment or review summary | Posting without review on protected repos | The draft is useful, but public comments carry team voice. |
| Prepare a fix branch | Create a branch only in a sandbox or user fork | Pushing to protected branches | Branch creation is safe only when branch rules are clear. |
| Ship or release | None by default | Merge, tag, release, change branch protection | These actions affect production trust and should stay outside the agent boundary. |
The tradeoff is speed. A stricter boundary means a developer clicks more buttons, but the team can adopt the workflow without debating every agent action after the fact.
Test the boundary on one pull request
Pick one open PR with failing CI and use it as the first exercise. Ask Claude Code to read the PR, identify the failing GitHub Actions job, inspect the likely file, and draft a short comment explaining the next change.
A good result is not a merged PR. A good result is a comment draft that names the failing check, points to the relevant file, and separates evidence from guesswork.
Run the same exercise twice: once with read-only access, and once with comment-draft permission if your policy allows it. If the second run does not save meaningful time, keep the first boundary.
Keep the rule near the workflow
Store the permission rule where developers look during review, such as /docs/ai/github-mcp.md or your Team conventions page. Link to it from CLAUDE.md only if your repo already uses Claude Code memory for durable team rules.
A Claude skill can hold the review rubric, and a hook can block local commands before they run. Neither replaces GitHub permissions, because MCP access controls what the agent can ask the external system to do.
Copy this note and adjust the allowed actions before you roll the server out to a shared repository:
# GitHub MCP permission note
Scope: Claude Code may use GitHub MCP for pull request and issue context during development and review.
Default mode: read-first
Allowed without extra approval:
- Read pull request title, description, comments, changed files, and checks.
- Read linked issues and project context needed for the current task.
- Summarize failing GitHub Actions jobs and point to likely files.
- Draft review comments for a developer to approve and post.
Needs explicit human approval:
- Post a public PR comment.
- Create or update an issue label.
- Create a branch outside a personal fork or sandbox.
Not allowed through Claude Code MCP:
- Merge pull requests.
- Push to protected branches.
- Create releases or tags.
- Change repository settings, secrets, branch protection, or access.
Review rule:
Before any GitHub write action, Claude Code must state the intended action, the target issue or PR, and the evidence it used.
Further reading
Run the first GitHub MCP exercise
Use one failing PR this week and write down the smallest GitHub permission set that made Claude Code useful. If you want the team to practise that handoff together, hands-on training covers Claude Code workshop exercises for delegation, review, and ownership.
Train your team on Claude Code
Two days on your team's own repository, onsite or remote, with a written proposal before you commit.
Book a callPrefer to measure first? Take the free team check.