cowork-harness

Version updated for https://github.com/yaniv-golan/cowork-harness to version v1.4.0.

  • This action is used across all versions by 0 repositories.

Action Type

This is a Composite action.

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Action Summary

This GitHub Action automates the testing of Claude Cowork skills in a headless and CI-friendly manner. It reproduces the observable runtime contract closely enough to test skills across various scenarios without relying on the locked Desktop app. Key features include:

  • Scriptable: Allows developers to create and run tests for their skills.
  • CI-ready: Facilitates integration into continuous integration pipelines.
  • Fidelity tiers: Supports different levels of fidelity in testing (replay, linting, live).
  • Test a local skill in one command.

Overall, this action helps developers ensure that their skills meet the limitations and behaviors of Claude Cowork.

What’s Changed

Added

  • coworkWebFetchDedup enacted (hostloop web_fetch). Real Cowork keeps a per-session negative-work cache: a repeat web_fetch of the same normalized URL within a TTL (default 15 min; cap 100; FIFO eviction; a hit does not refresh recency) makes no network request and returns a marker telling the model to re-use the earlier result. The harness now reproduces this on the host-API (coworkWebFetchViaApi) path — baseline-gated (only when the resolved baseline’s coworkWebFetchDedup gate is on, i.e. Desktop ≥ 1.22209.3), keyed under both the request URL and the terminal destination_url, never caching errors / empty / non-2xx responses, and emitting no egress event on a hit (matching production’s zero-network dedup). A hit is observable via the marker text (tool_result_contains: "Already fetched").

Changed

  • Platform baseline synced to Desktop 1.22209.3 (agent 2.1.215). No prompt / spawn-env / egress-allowlist drift vs 1.21459.0; the sync captured the new coworkWebFetchDedup runtime config (enacted above) plus a few new (off) GrowthBook gates. The skill/README/reference version floors and agent-binary pins track the new baseline.

Full Changelog: https://github.com/yaniv-golan/cowork-harness/compare/v1...v1.4.0