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    Works with the AI tools you already use

    Claude CodeClaude CodeCursorCursorCodex CLICodex CLIGitHub CopilotGitHub CopilotGemini CLIGemini CLI+20 more

    Repair Cancellation Propagation

    1

    Repair lost cancellation signals, orphaned async work, retry-after-cancel bugs, stale completions, and unclear request-vs-durable task lifetimes.

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    Repair Cancellation Propagation

    Repair Cancellation Propagation

    Example session with this skill installed

    Our Next.js/TypeScript API uses AbortController at the route layer, but the signal is not passed through the service to our fetch-based vendor client or Prisma wrapper. When a browser cancels a long export request, the vendor call and database aggregation continue for 20–40 seconds. Promise.all starts four child operations; if one fails, two others keep running. A retry helper can start another vendor request even after the route was cancelled. Repair cancellation propagation locally with deterministic tests. Do not call the live vendor, query production data, kill production jobs, or assume an already accepted vendor request was undone by local cancellation.

    • Read your context and instructions
    • Compiled the repair cancellation propagation

    Cancellation propagation gaps found. The request AbortSignal is lost at service boundaries, vendor calls ignore it, sibling work can outlive failure, and retry may start after cancellation. The repair forwards cancellation through request-owned work, adds structured cleanup and retry suppression, protects durable handoff boundaries, and adds deterministic cancellation tests. Remote provider and production DB cancellation remain unverified.

    Connects securely to your tools. The creator never sees your data.

    What you get

    Fix resource leaks by stopping abandoned database queries after client disconnect.Ensure sibling tasks in a group are cleaned up when one operation fails.Decouple durable background jobs from request-bound cancellation signals.Validate cleanup logic with deterministic tests instead of timing-based guesses.

    About this skill

    Cancellation bugs are lifecycle bugs. A browser disconnects, but the vendor call keeps running. One sibling task fails while others continue. A retry starts after the caller is gone. Or the opposite happens: a durable background job is incorrectly tied to request cancellation.

    Repair Cancellation Propagation gives an AI coding agent a repository workflow for mapping cancellation sources and lifetime domains, forwarding AbortSignals/tokens, repairing structured concurrency and cleanup, protecting durable handoff boundaries, separating timeout from cancellation, and building deterministic cancellation tests.

    It does not cancel production work, kill processes, call live dependencies, or assume local cancellation reverses a remote side effect.

    How to install

    Works the same in every agent - Claude, Cursor, Codex, Copilot and 20+ more.

    ~30 seconds
    1. 1

      Download the ZIP

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    2. 2

      Unzip into your skills folder

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    3. 3

      Ask your agent to use it

      Restart the agent if it was already running. It picks the skill up automatically - no config needed.

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    Security scanned

    Verified clean 19 days ago

    • Passed all security checks, Safe to install

    Listed19 days ago
    Updated2 days ago

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