mcblmplss

MCP server for querying U.S. public land data by coordinates.

Drop a pin anywhere in the western U.S. and get comprehensive land data:

Category	What you get
PLSS Location	Section 12, Township 4N, Range 6E, Principal Meridian
Land Manager	BLM, Forest Service, NPS, Private, State, Tribal
Mining Claims	Active lode/placer claims with serial numbers
Grazing Allotments	Livestock grazing permits and acreage
Wild Horses	Herd Management Areas with population data
Recreation Sites	Campgrounds, trailheads, boat launches
Wilderness Areas	Designated Wilderness & Study Areas (WSAs)
Wild Rivers	Wild & Scenic River segments
ACECs	Areas of Critical Environmental Concern

When would I use this?

Use Case	Tools to use
Dispersed camping	get_land_manager — Check if it's BLM/USFS public land
Trip planning	get_recreation_sites — Find nearby campgrounds and trailheads
Land research	get_plss_location — Get legal descriptions for title searches
Prospecting	get_mining_claims — Check existing claims before staking
Ranching	get_grazing_allotment — Research grazing permit areas
Wildlife viewing	get_wild_horse_herd — Find wild horse/burro areas
Backcountry planning	get_wilderness_area — Identify wilderness regulations
River trips	get_wild_river — Check Wild & Scenic River status
Conservation research	get_acec — Find protected environmental areas

Installation

pip install mcblmplss

Or run directly:

uvx mcblmplss

Add to Claude Code

claude mcp add blm "uvx mcblmplss"

Tools (19 total)

Each data type has two tools: a human-readable version and a _details version returning structured data.

Plus a batch tool for efficient multi-coordinate queries.

PLSS — Public Land Survey System

> get_plss_location(40.0, -105.0)

Section 9, Township 1N, Range 68W, 6th Meridian
State: CO
PLSS ID: CO060010S0680W0SN090

Batch PLSS Queries

Query multiple coordinates in parallel with optional county validation:

> get_plss_details_batch(
    coordinates=[[44.5, -115.8], [44.6, -115.9], [44.7, -116.0]],
    include_county=True
  )

{
  "results": [
    {
      "latitude": 44.5,
      "longitude": -115.8,
      "township": {"township": "13N", "range": "5E", ...},
      "section": {"section": "30", ...},
      "county": {"name": "Valley County", "fips": "16085", ...}
    },
    ...
  ],
  "total": 3,
  "successful": 3,
  "failed": 0,
  "unique_townships": ["13N 5E", "14N 4E"]
}

The unique_townships field is useful for discovering which Township/Range combinations exist within a sampling grid.

County data comes from Census TIGERweb (layer 82), not BLM PLSS. Use include_county=True when you need to validate that sampled points fall within an expected county.

Land Manager — Surface Management Agency

> get_land_manager(38.5, -110.5)

Bureau of Land Management (BLM) - Department of the Interior
Unit: Bureau of Land Management
State: UT
Status: Federal, Public access

Mining Claims

> get_mining_claims(39.5, -117.0)

Found 42 mining claim(s):

MAGA #6
  Serial: NV105221817
  Type: Lode Claim
  Status: Active
  Acres: 20.66

Grazing Allotments

> get_grazing_allotment(40.0, -117.0)

AUSTIN (#10004)
State: Nevada
Admin Unit: MOUNT LEWIS FIELD OFFICE
Acres: 245,420
Managing Number: NV10004

Wild Horses & Burros

> get_wild_horse_herd(40.0, -117.5)

Augusta Mountains (NV0311)
State: Nevada
Type: Horse
Acres: 177,570
Horse AML: 185-308
Estimated Population: 475 (154% of AML)
Last Inventory: 2015-01-01

Recreation Sites

> get_recreation_sites(38.9, -111.2)

Found 3 recreation site(s):

Rochester Panel
  Type: Facility
  Reservable: No
  Phone: 435-636-3600
  https://www.blm.gov/visit/search-details/257016/1

Wilderness & WSAs

> get_wilderness_area(38.4, -110.9)

Middle Wild Horse Mesa
  Status: Designated Wilderness
  State: Utah
  NLCS ID: NLCS000885
  Designated: 3/12/2019

Wild & Scenic Rivers

> get_wild_river(42.5, -123.5)

Rogue River
  Classification: Recreational
  State: Oregon
  NLCS ID: NLCS000836

ACECs — Areas of Critical Environmental Concern

> get_acec(35.0, -117.0)

Superior-Cronese
  State: California
  Protected Values: Natural Process, Natural System, Wildlife
  Acres: 518,461
  Land Use Plan: CDCA Plan, as amended by DRECP
  Designated: 9/14/2016

Coverage

Data is available for 30 states where the Public Land Survey System was used:

Not covered: Eastern seaboard states (metes-and-bounds), Texas (independent surveys), Hawaii.

Data Sources

All data comes from official government ArcGIS REST services (BLM + Census TIGERweb):

Data	Source	Typical Update
PLSS	BLM National PLSS CadNSDI	Quarterly
County	Census TIGERweb	Annual
Surface Management	BLM SMA	Annual
Mining Claims	BLM MLRS	Weekly
Grazing	BLM Grazing Allotment	Annual
Wild Horses	BLM WHB	Annual
Recreation	BLM RIDB	Nightly
Wilderness	BLM NLCS WLD/WSA	As designated
Wild Rivers	BLM NLCS WSR	As designated
ACEC	BLM ACEC	As designated

Disclaimer: This data is for informational purposes only. For legal land descriptions, consult official BLM records or a licensed surveyor.

Development

git clone https://git.supported.systems/MCP/mcblmplss.git
cd mcblmplss
uv sync
uv run mcblmplss

License

MIT