review-delta

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Review only changes since last commit using impact analysis. Token-efficient delta review with automatic blast-radius detection.

tirth8205 By tirth8205 schedule Updated 3/6/2026

name: review-delta description: Review only changes since last commit using impact analysis. Token-efficient delta review with automatic blast-radius detection. argument-hint: "[file or function name]"

Review Delta

Perform a focused, token-efficient code review of only the changed code and its blast radius.

Token optimization: Before starting, call get_docs_section_tool(section_name="review-delta") for the optimized workflow. Use ONLY changed nodes + 2-hop neighbors in context.

Steps

  1. Ensure the graph is current by calling build_or_update_graph_tool() (incremental update).

  2. Get review context by calling get_review_context_tool(). This returns:

    • Changed files (auto-detected from git diff)
    • Impacted nodes and files (blast radius)
    • Source code snippets for changed areas
    • Review guidance (test coverage gaps, wide impact warnings, inheritance concerns)
  3. Analyze the blast radius by reviewing the impacted_nodes and impacted_files in the context. Focus on:

    • Functions whose callers changed (may need signature/behavior verification)
    • Classes with inheritance changes (Liskov substitution concerns)
    • Files with many dependents (high-risk changes)
  4. Perform the review using the context. For each changed file:

    • Review the source snippet for correctness, style, and potential bugs
    • Check if impacted callers/dependents need updates
    • Verify test coverage using query_graph_tool(pattern="tests_for", target=<function_name>)
    • Flag any untested changed functions
  5. Report findings in a structured format:

    • Summary: One-line overview of the changes
    • Risk level: Low / Medium / High (based on blast radius)
    • Issues found: Bugs, style issues, missing tests
    • Blast radius: List of impacted files/functions
    • Recommendations: Actionable suggestions

Advantages Over Full-Repo Review

  • Only sends changed + impacted code to the model (5-10x fewer tokens)
  • Automatically identifies blast radius without manual file searching
  • Provides structural context (who calls what, inheritance chains)
  • Flags untested functions automatically
Install via CLI
npx skills add https://github.com/tirth8205/code-review-graph --skill review-delta
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