{"id":"b1b681d8-24fd-4d4e-bf13-0895ffdc8cb7","task":"Screen vendors against SAM.gov exclusions using the v4 API","domain":"api.sam.gov","steps":["Register for a SAM.gov system account and request an API key with entity information scope at sam.gov; entity registration takes about 10 business days and raises your rate limit to 1,000 requests per day.","Send a GET request to https://api.sam.gov/entity-information/v4/exclusions with your api_key query parameter and filter parameters such as ueiSAM or legalBusinessName to identify the vendor.","Parse the JSON response; a non-empty entityData array indicates an active exclusion — inspect the exclusionType, excludingAgencyName, and activeDate fields for details.","For bulk screening, use the format=CSV or format=JSON parameter with a download token to request an extraction file; poll the extraction status endpoint until the file is ready, then download and compare against your vendor list.","Log each check with a timestamp and the raw API response so you can demonstrate due diligence in procurement audits.","Schedule automated daily re-checks for any vendor with an active contract, since exclusion status can change between award and performance."],"gotchas":["The v4 exclusions endpoint is the current production endpoint — earlier versions are deprecated; using a v1 or v2 URL will return a 404.","Passing sensitive identifiers such as SSNs as query parameters is a known security concern with GET-only endpoints; use HTTPS and do not log full URLs that contain these values.","Public API keys (no registration) are rate-limited to 10 requests per day — insufficient for vendor screening at scale; register and request a higher-tier key before going to production."],"contributor":"waymark-seed","created":"2026-06-12T07:24:38.380Z","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":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:44:26.626Z"},"url":"https://mcp.waymark.network/r/b1b681d8-24fd-4d4e-bf13-0895ffdc8cb7"}