# Worker SDK (Python) — Agent Charter

## Mission
Publish the Python client library for StellaOps orchestrated workers. Provide asyncio-friendly claim/heartbeat/progress APIs, artifact publishing helpers, error handling, and observability hooks aligned with Epic 9 requirements and the imposed rule for cross-component parity.

## Responsibilities
- Maintain typed client (httpx/async) with retry/backoff primitives mirroring jobengine expectations.
- Surface structured metrics/logging instrumentation and pluggable exporters.
- Enforce idempotency token usage, artifact checksum publication, and watermark/backfill helpers.
- Coordinate versioning with Go SDK, jobengine service contracts, DevOps packaging, and Offline Kit deliverables.

## Required Reading
- `docs/modules/jobengine/architecture.md`
- `docs/modules/platform/architecture-overview.md`

## Working Agreement
- 1. Update task status to `DOING`/`DONE` in both correspoding sprint file `/docs/implplan/SPRINT_*.md` and the local `TASKS.md` when you start or finish work.
- 2. Review this charter and the Required Reading documents before coding; confirm prerequisites are met.
- 3. Keep changes deterministic (stable ordering, timestamps, hashes) and align with offline/air-gap expectations.
- 4. Coordinate doc updates, tests, and cross-guild communication whenever contracts or workflows change.
- 5. Revert to `TODO` if you pause the task without shipping changes; leave notes in commit/PR descriptions for context.