California State Lands Commission — coastal tidelands + offshore O&G + School Lands + Granted Lands. - searchOffshoreLeases ⭐ ~34 polygons (Active 26 / Inactive 8) — Long Beach/Wilmington/Huntington - searchOnshoreLeases ⭐ ~5.5K leases (76 Oil & Gas). Defaults TypeofLease='Oil & Gas Lease' - searchSchoolLands ~1.3K PLSS polygons (CNTY field, NOT COUNTY) - searchGrantedLands ~115 tidelands grants. Active 105 / Repealed 4 upstream quirks: AGOL services3.arcgis.com/5aaQCuq3e4GRvkFG owned by CA_State_Lands_Commission. Offshore lean schema (PRC + Lease_Stat only). CSLC Leases use ISO date strings + Lat/Lon strings + geometry.x/y. School_Lands has CNTY (4-char), 'Tinity'->'Trinity' typo. Granted_Lands COUNTY has 'Marin'/'Marin County' variants.
5 methodsFreshness not declared
Knowledge
Know your data sources.
The public data contract for every source PatchOps exposes over MCP: provenance, freshness, coverage, caveats, and per-method schemas. Also available as JSON at /api/knowledge/data-sources.
tag: cslc