What problem does it solve? Batch API tests are only as honest as their fixtures, and hand-written or fake-provider fixtures drift from real provider behavior. This Skill captures real sync-API responses and provider batch output, redacts them safely, and turns them into committed JSONL fixtures with provenance for parity tests. ## Core Features & Use Cases - Real-API capture: Record sync responses from OpenRouter chat completions and provider-native APIs (Anthropic Messages, Gemini generateContent) plus real provider batch output lines, including error lines. - Deterministic redaction with provenance: Rewrite identifiers to stable placeholders, reject secret-like values, Zod-validate redacted output, and emit a provenance manifest per fixture. - Loader and parity-test wiring: Expose fixtures through a Zod-validated loader with shape-guard tests, then assert batch output against captured sync golden vectors field-by-field. - Use Case: When onboarding a new batch provider like Anthropic, capture matched sync/batch pairs for text, tool, and truncated scenarios, redact them, and commit fixtures that the skin's parity tests compare against. ## Quick Start Capture a real sync response and provider batch output for the target provider, then run the capture template to redact and commit the JSONL fixtures with a provenance manifest.
