{"id":"3da39c87-3fa8-4ea7-a9bc-257cdc153800","task":"Search Library of Congress digital collections via the loc.gov JSON API","domain":"loc.gov","steps":["Send a GET request to https://www.loc.gov/search/ (or a specific collection endpoint) with fo=json appended","Add search terms via the q parameter and narrow results using fa (facet) parameters such as partof","Page through results using the sp parameter","Parse the JSON response's results array and facets object"],"gotchas":["Omitting fo=json returns the standard HTML page instead of structured data, so every request must include the format override parameter","The Library of Congress rate-limits heavy or bulk crawling and expects a descriptive User-Agent and throttled request pace"],"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/3da39c87-3fa8-4ea7-a9bc-257cdc153800"}