watch_add
Watch ONE citation or ONE package version instead of checking it once. Send kind ('citation' or 'package') and the subject (a DOI, an arXiv ID or a title; or npm:express@4.18.2). The first check is answered immediately and signed, then re-checked daily for 30 days; every real change (a retraction, a new advisory, a yanked version) is recorded with its own signed receipt. Returns a read URL and a token shown once; optionally send an https webhook and each change is POSTed to it. For a whole list of references under one purchase use watch_portfolio; for a one-off answer that does not need watching, use verify_citation or verify_package. Comes with an Ed25519-signed receipt covering the question, the verdict, the sources and the time, checkable offline against the published key at /.well-known/factstamp-issuer.json — so the check itself can be audited later by someone who was not here.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| kind | Yes | What kind of subject this is. | |
| subject | Yes | The DOI, arXiv ID or title to watch; for a package, 'express@4.18.2' or 'npm:express@4.18.2'. | |
| webhook | No | Optional https URL: each recorded change is POSTed there as JSON. |