US Places, Then

io.github.ianderso/us-places-mcpv0.2.0Maps & Location

US places then: county on a date, PLSS land, GNIS names, old topo maps, post offices.

The current version, v0.2.0, was published to the official MCP registry on 2026-10-06. It is distributed as us-places-mcp on PyPI, filed under Maps & Location by this index, and declares 9 environment variables. Removals and unreachable sources are measured across every server this index tracks, contract drift across the servers that answer in consecutive snapshots; the index's current counts put this record in context.

In-path gate · all MCP tools

Using US Places, Then in Claude, Cursor, Gemini CLI, Cline, or Zed?

MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and HOLDs the call when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use Install this server for that).

Install the mcpindex gate (one command)

Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less

uv tool install mcpindex-gate && mcpindex-config-wire

Auditable install path →Watch it hold a drift →

Trust verdict · v1 advisory · method

REVIEWstatus: PARTIALfresh until 2026-11-05 23:02 UTC

screened 2026-10-06tier: scannedgranularity: description-levelsource: registry

Semantic screen found no manipulation pattern in the description. Conformance probe not yet run.

mcpindex.integrity.descriptionpassINFO

evidence“No malicious instructions”via static_description

Limits of this verdict

- Semantic screen only - the deterministic conformance probe has not run on this server
- Confidence is reported but not yet calibrated (v1)
- Screen reads the tool description, not the live behavior
- advisory
- registry description only no input schema
- screen model 8b

Semantic screen: an LLM judge reads the tool description for hidden instructions (status PARTIAL). A pass means the description is not lying, not that the tool is safe: a high-capability tool with an honest description still warrants caution. The deterministic conformance probe has not been run on this server yet, so the screen here is semantic-only. Posture: advisory. Confidences are reported but not yet calibrated (calibrated=false at v1). Full verdict history is not shown on this page.

Own this server? Test a description on the public screen → It is a separate check from the verdict above, so the two can differ.

That verdict was true at screening time (snapshot 2026-10-19).

Contracts can change after screening, with no version bump. The gate pins US Places, Then’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.

See your first HOLD in 2 minutes →

Cite this record

People vet a server before wiring it in. One line on your project site or docs answers that with an independent record: screening verdict, registry provenance, contract drift history. It stays current as new screens and drift events land.

Markdown

[Independent trust record for US Places, Then](https://mcpindex.ai/server/io-github-ianderso-us-places-mcp) - screening verdict, registry provenance, and contract drift monitoring.

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<a href="https://mcpindex.ai/server/io-github-ianderso-us-places-mcp">Independent trust record for US Places, Then</a> - screening verdict, registry provenance, and contract drift monitoring.

Embed this badge

A live verdict badge for your README or listing. It reflects the current screen, links back here, and updates when the verdict does.

Markdown

[![mcpindex](https://mcpindex.ai/api/v1/badge/io-github-ianderso-us-places-mcp)](https://mcpindex.ai/server/io-github-ianderso-us-places-mcp)

HTML

<a href="https://mcpindex.ai/server/io-github-ianderso-us-places-mcp"><img src="https://mcpindex.ai/api/v1/badge/io-github-ianderso-us-places-mcp" alt="mcpindex verdict" height="20" /></a>

Environment variables

US_PLACES_OVERPASS_URL

OpenHistoricalMap's Overpass endpoint.

US_PLACES_PLSS_URL

BLM's national PLSS (CadNSDI) map service.

US_PLACES_GNIS_URL

USGS's GNIS map service (The National Map).

US_PLACES_GNIS_ARCHIVE_URL

Where USGS keeps the August 2021 GNIS state files.

US_PLACES_TNM_URL

The National Map's TNM Access products API.

US_PLACES_DATAVERSE_URL

Harvard Dataverse, which holds the US post offices dataset.

US_PLACES_CACHE_DIR

Directory for the on-disk response cache and the downloaded datasets.

US_PLACES_TIMEOUT

HTTP timeout in seconds.

US_PLACES_CONTACT

An email address or URL appended to the User-Agent, so the services can reach whoever runs the server.

MCP quality score · maturity, not trust · methodology

freshness

completeness

installability

documentation

stability

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Install this server

Claude Desktop (uvx)

{
  "mcpServers": {
    "us-places-mcp": {
      "command": "uvx",
      "args": [
        "--",
        "us-places-mcp"
      ],
      "env": {
        "US_PLACES_OVERPASS_URL": "https://overpass-api.openhistoricalmap.org/api/interpreter",
        "US_PLACES_PLSS_URL": "https://gis.blm.gov/arcgis/rest/services/Cadastral/BLM_Natl_PLSS_CadNSDI/MapServer",
        "US_PLACES_GNIS_URL": "https://carto.nationalmap.gov/arcgis/rest/services/geonames/MapServer",
        "US_PLACES_GNIS_ARCHIVE_URL": "https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/Archive/MainDomestic",
        "US_PLACES_TNM_URL": "https://tnmaccess.nationalmap.gov/api/v1/products",
        "US_PLACES_DATAVERSE_URL": "https://dataverse.harvard.edu",
        "US_PLACES_CACHE_DIR": "~/.cache/us-places-mcp",
        "US_PLACES_TIMEOUT": "60",
        "US_PLACES_CONTACT": "<us_places_contact>"
      }
    }
  }
}

Verdict API

curl -s mcpindex.ai/api/v1/trust/server/io-github-ianderso-us-places-mcp

Free-tier verdict as JSON: decision + dimensions + severity. Call it from your agent before it invokes a tool it just discovered.

Details

version: v0.2.0
category: Maps & Location
verdict expires: 2026-11-05
quality: 85 / 100
operator: ianderso

Listing

Listed from the official MCP registry. Unclaimed by its maintainer. Maintainer? Email us →

Provenance

Each verdict is bound to a hash of the exact description it judged, so a re-crawl that changes the text produces a new record rather than silently inheriting this one. Verdict history is hash-chained and anchored to Bitcoin via OpenTimestamps (latest confirmed at block 972,115). Verify it yourself.

Links

Repository →