Show me the diff before merge

Problem

Your agent has generated a patch — a refactor, a dependency update, a schema change. Before it commits or opens a PR, you want to review the diff properly: syntax-highlighted, with the ability to leave inline comments and either approve or request changes.

The MCP call

import subprocess

diff = subprocess.check_output(
    ['git', 'diff', '--staged'],
    text=True,
)

handle = request_review(
    diff=diff,
    title='Refactor: extract billing module',
    base_ref='main',
    head_ref='feat/billing-extract',
    context_md='Extracted 3 functions. All tests pass. No behaviour change.',
    require='approve',
    ttl_minutes=1440,  # 24 hours
)
print(f'Review at: {handle["web_url"]}')

result = await_decision(handle['review_id'], timeout_s=86400)
if result['outcome'] == 'approved':
    subprocess.run(['git', 'commit', '-m', 'refactor: extract billing module'])

What you get back

You get a push notification with the review link. You open the syntax-highlighted diff, leave inline comments on any lines you want to discuss, add an overall remark, and click Approve or Request changes. The agent unblocks with the outcome.

Follow-up calls

After you request changes, the agent can amend the diff and call request_review again — include context_md='Addressed your comments on lines 24 and 31.' so you know what changed.

Notes

This is for agent-generated patches and local changes, not GitHub PRs. For GitHub PR reviews, use GitHub's native review interface.