feat: add update_issue_comment tool - #3284
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Add an issues tool for replacing the body of an existing issue or pull request comment, with schema, scope, behavioral, snapshot, and generated documentation coverage. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 9acf9c83-49aa-41af-a42d-ad75de34d132
Register nil-safe response body cleanup before handling go-github errors from issue comment updates. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 9acf9c83-49aa-41af-a42d-ad75de34d132
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Copilot review overview
🟡 Changes recommended
Empty bodies bypass runtime validation, and the documentation ambiguously includes pull request review comments.
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Review tier: Balanced (auto)
Findings: 1
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RossTarrant
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Sep 15, 2026
Reject explicitly empty comment bodies at runtime and distinguish issue and pull request conversation comments from pull request review comments in the tool schema and generated docs. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 9acf9c83-49aa-41af-a42d-ad75de34d132
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Copilot review overview
🟢 Approval recommended
The implementation, validation, scope handling, documentation, snapshots, and tests are consistent and complete.
Review tier: Balanced (auto)
Findings: None
Note
Copilot is running an experiment and ran this review at Balanced.
Resolved since last review (2)
RossTarrant
approved these changes
Sep 15, 2026
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Summary
Adds an
update_issue_commentMCP tool that replaces the body of an existing issue or pull request comment and returns the standard minimal ID/URL response.Why
Agents can currently create issue comments but cannot correct or revise them through the MCP server.
Fixes #1083
What changed
update_issue_commentusing the GitHub RESTIssues.EditCommentAPI.MCP impact
The new tool accepts
owner,repo,comment_id, andbody. The REST endpoint identifies the target comment directly, so an issue number is not required.Prompts tested (tool changes only)
Security / limits
The tool uses the same repository/public-repository write-scope behavior as
add_issue_comment; GitHub continues to enforce comment-edit permissions.Tool renaming
deprecated_tool_aliases.goLint & tests
./script/lint./script/testDocs