Oklahoma Commissioners of the Land Office state-trust real estate + mineral leases. SCOOP/STACK parallel. No auth. - searchLeases ⭐ category=real-estate (default, ~2.9K) | mineral (~4.5K, activeOnly default true) - getExpiringLeases ⭐ defaults to curated Expiring Real Estate Leases layer (~580) - getLeaseDetail, searchWellInventory (OCC mirror, ~576K), getServiceInfo upstream quirks: BeginDate/EndDate are ISO YYYY-MM-DD strings (server-side date filters work). CountyName UPPERCASE upstream. Mineral layer mixes ACTIVE + EXPIRED — use activeOnly=true (default). LeaseType values on Real Estate: Agricultural / Short-term Commercial / Long-term Commercial.
5 methodsFreshness not declaredOklahoma Water Resources Board aquifers + floodplains + biological data. Native ArcGIS REST + AGOL Feature Services (owner: OWRBOnline), no auth. - searchAquifers ⭐ — 71 aquifer polys across 4 layers (Major/Minor × Bedrock/Alluvial) - getFloodplain ⭐ — point-in-polygon FEMA SFHA lookup (~23,539 polys) - searchStreamFishCounts (~10,749 obs), getServiceInfo quirks: Aquifers MapServer (csa.ou.edu) uses LOWERCASE field names (name/class/type) vs uppercase on AGOL. Floodplain is OWRB-published from FEMA NFHL — FLD_ZONE in X/AE/A/AO/AH; no name/county column. Stream Fish Counts has no county column — bbox/near is the geo filter; FISH_GROUP is taxonomic family.
4 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: stack