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Assess the blast radius of a change and review a diff — what it touches, what could break, which tests to run, and the prior decisions behind it.

Skill by TheWinci

IndexedApache-2.0★ 30
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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

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About

Assess the blast radius of a change and review a diff — what it touches, what could break, which tests to run, and the prior decisions behind it. Use before a refactor, rename, or signature change, and when reviewing a pull request or your own uncommitted diff.

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Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

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Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/review

What's inside

Skill name
review
Description
Assess the blast radius of a change and review a diff — what it touches, what could break, which tests to run, and the prior decisions behind it. Use before a refactor, rename, or signature change, and when reviewing a pull request or your own uncommitted diff.
License
Apache-2.0
Instructions
14 lines in SKILL.md · view on GitHub

Files (1)

  • SKILL.md

SKILL.md (first lines)

# Review

Goal: know the full impact before and after changing code — no surprise breakage.

1. **What changed** — `git_context(include_diff: true)` for the modified files and the diff.
2. **Blast radius** — for each changed function or type: `impact <symbol>` (transitive callers as a pruned tree + the tests to run). Widen with `usages <symbol>` (every call site) and `dependents <file>` (file-level importers). Pass `file` to `impact` to disambiguate a name defined in several places.
3. **Tests to run** — `affected` for the changed set (CLI: `git diff --name-only | mimirs affected --stdin`). Run those before claiming the change is done.
4. **Known caveats** — `get_annotations` on the touched files: fragile code, constraints, "don't refactor until X".
5. **Why it's like this** — `search_checkpoints "<area>"` (prior decisions) and `search_commits "<area>"` (why it changed before), so you don't undo a deliberate choice.
6. **After the change** — re-run `impact` / `affected`; `annotate` any new caveat you introduce; `create_checkpoint` the decision and what changed.

Finish: a risk summary — callers affected, tests to run, caveats, prior decisions — each with a `file:line` citation.

From TheWinci/mimirs, Apache-2.0.

More from TheWinci/mimirs

Signals

Stars
30
Forks
3
Open issues
0
Last commit (this folder)
Jun 4, 2026 (4 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License
Apache-2.0
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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review skill. Agent Mart. https://agentmart.dev/skills/thewinci-review (last updated 2026-10-24)