Add a review comment to a GitHub pull request.
Adds a review comment to a specific line in a GitHub pull request.
Use the fetch-diff skill (optionally piped through grep) to locate the line to comment on.
Single-line comment:
gh api repos/<owner>/<repo>/pulls/<pr_number>/comments \
# Body must end with "🤖 Generated with Claude" on a separate line
-f body=<comment> \
-f path=<file_path> \
-F line=<line_number> \
-f side=<side> \
-f commit_id="$(gh pr view <pr_number> --repo <owner>/<repo> --json headRefOid -q .headRefOid)" \
--jq '.html_url'
Multi-line comment:
gh api repos/<owner>/<repo>/pulls/<pr_number>/comments \
# Body must end with "🤖 Generated with Claude" on a separate line
-f body=<comment> \
-f path=<file_path> \
-F start_line=<first_line> \
-f start_side=<side> \
-F line=<last_line> \
-f side=<side> \
-f commit_id="$(gh pr view <pr_number> --repo <owner>/<repo> --json headRefOid -q .headRefOid)" \
--jq '.html_url'
line: Line number in the file (for multi-line, the last line)side: RIGHT for added/modified lines (+), LEFT for deleted lines (-)start_line/start_side: For multi-line comments, the first line of the rangeUse suggestion blocks (three backticks + "suggestion") for simple fixes that maintainers can apply with one click
```suggestion
<suggested code here>
```
Note: Preserve original indentation exactly in suggestion blocks
For repetitive issues, leave one representative comment instead of flagging every instance
For bugs, explain the potential problem and suggested fix clearly