SAM.gov Opportunities API: The NAICS Filter Does Nothing

The SAM.gov Opportunities API v2 accepts a naics query parameter. The documentation implies it will filter results to matching NAICS codes. It doesn’t. What actually happens GET https://api.sam.gov/prod/opportunities/v2/search?api_key=...&naics=541511&limit=100 Returns opportunities with NAICS codes 541330, 561210, 711510, and anything else currently open — not just 541511. The filter is parsed, no error is returned, but the result set is unfiltered. This appears to be a persistent bug in the v2 API. It isn’t mentioned in the documentation. ...

May 1, 2026 · 2 min · Conselara Labs