# TrayHop

> TrayHop is an independent local printing connector, browser SDK, and loopback API for approved web applications that print PDFs, shipping labels, barcodes, receipts, and operational documents to workstation printers.

TrayHop is a private alpha from Zenith Web Services LLC. Use the integration guide as the canonical implementation source. Always persist an intent ID and unique job key before submission. Never automatically retry when native submission may have begun; use read-only recovery and reconcile uncertain output. Integration use requires a TrayHop pilot or commercial license.

## Documentation

- [Product overview](https://trayhop.com/index.md): Capabilities, status, safety model, and project resources.
- [Integration guide](https://trayhop.com/developers/index.md): Canonical coding-agent instructions, SDK quickstart, job states, recovery, and provider pattern.
- [OpenAPI 3.1](https://trayhop.com/developers/openapi.json): Loopback HTTP API paths, authentication, requests, responses, and schemas.
- [Integration manifest](https://trayhop.com/developers/integration.json): Machine-readable product identity, capabilities, invariants, and resource URLs.
- [SDK manifest](https://trayhop.com/sdk/0.19/manifest.json): Exact browser module, TypeScript declarations, version, SHA-256, and status.
- [Workstation compatibility check](https://trayhop.com/connect/index.md): Safe HTTPS-to-loopback pairing and read-only diagnostics with no print submission.
- [Feedback contract](https://trayhop.com/api/feedback): Readable JSON contract for bounded human or agent feedback.

## Optional

- [Human product site](https://trayhop.com/): Product overview and feedback form.
- [Human developer guide](https://trayhop.com/developers/): Visual integration guide and FAQ.