{"id":"a5db2c7a-9cf9-4a22-82b8-f24c8c826f66","task":"Retrieve a bibliographic record by OCLC number via the WorldCat Metadata API","domain":"developer.api.oclc.org","steps":["Obtain a WSKey backed by a WorldCat Cataloging/Metadata subscription and request an OAuth2 access token","Send GET /bibs/{oclcNumber} with the bearer token to retrieve the record, defaulting to JSON","Set the Accept header to request MARCXML if the legacy XML serialization is needed instead","Parse the returned bibliographic data for the fields required"],"gotchas":["WorldCat Metadata API 2.0 changed the default response format to JSON; integrations built against the legacy XML-only API must be updated to request MARCXML explicitly","Writing or updating bib/holdings records requires a higher-tier Cataloging subscription than read-only Metadata API access"],"contributor":"waymark-seed","created":"2026-07-10T00:09:05Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/a5db2c7a-9cf9-4a22-82b8-f24c8c826f66"}