PlaceRoot
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Keyless MCP server for spatial questions over Overture Maps open data — places, geocoding, routing — token-budgeted answers, no API key.
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- chuofringer
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Setup
Install PlaceRoot in your MCP client (Claude Desktop, Cursor, Windsurf, and others).
Repository: https://github.com/chuofringer/placeroot
Follow the installation instructions in the repository README, then restart your MCP client.
Quick start·Tools·Reference·Benchmarks·Website
PlaceRoot grounds AI agents in open map data.It's an MCP server that answers spatial questions — what's nearby, what's in this neighborhood, how do I get there — fromOverture Mapsopen data. No API key, no signup, no vendor platform.
- 🎯Answers, not data dumps.Every tool returns compact, ranked results sized for an agent's context window — never a raw GeoJSON dump.
- 🗺️Real routing, zero keys.routeandisochronewalk an actual street graph built from Overture's transportation segments — not a straight-line guess — anywhere on Earth.
- 🏙️Rich, filterable place data.Category, brand, confidence, operating status, contactability — sourced from Overture's open dataset (contributed by Meta, Uber, TomTom, and others).
- 📐Boundary-accurate.Search inside a named place's real administrative polygon, not a guessed radius circle.
- ⚡Zero setup.Reads Overture's public data directly — no key, no database, nothing to install beyond the server itself.
Run it straight from PyPI or npm — no install step:
uvx placeroot # stdio MCP server uvx placeroot --http # HTTP endpoint at http://127.0.0.1:8321/mcp
claude mcp add placeroot -- uvx placeroot
Add to yourclaude_desktop_config.json:
{ "mcpServers": { "placeroot": { "command": "uvx", "args": ["placeroot"] } } }
Same config as above wherever your client keeps its MCP server list. Prefer npm? Use"command": "npx", "args": ["placeroot"].
{ "mcpServers": { "placeroot": { "command": "npx", "args": ["placeroot"] } } }
"What's around downtown Palo Alto?" · "Compare these two neighborhoods for a bike shop." · "Plan my errands: pharmacy, hardware store, post office."
34 tools, grouped into four families — every answer fits in a couple of thousand tokens:
It also ships fiveworkflow prompts(site selection, neighborhood comparison, errand planning, should I live here, get to know my city) and three attachableresources— and aPLACEROOT_TOOLSsetting to load only the tool profiles you need, cutting schema overhead by up to 94%.
📚Full tool catalog, prompts, resources & configuration → docs/REFERENCE.md
[!NOTE] Open data has honest limits: no live traffic, no opening hours, no ratings or photos —what PlaceRoot deliberately doesn't do. For everything else about where things are and what's reachable from them, it answers without a key.
It's the only keyless MCP server doing real graph routing over global open map data — with every tool declaring properMCP annotationsso clients know which calls are read-only before prompting you. StableGERS idslet agents hold onto places across turns; local caching makes repeat queries answer in milliseconds and keeps working offline; and the whole thing isself-hostable end to end.
How it stacks up against Mapbox MCP and Google Maps MCP:head-to-head benchmarks·token-efficiency numbers.
Overture's places theme is derived from business listings, which makes it strong on businesses and thin on the places a family goes on a Saturday — playgrounds, neighbourhood parks, dog parks, beaches. Those features aren't missing from Overture, though; they're in a different theme. Overture'sbasetheme is a direct conflation of OpenStreetMap, and PlaceRoot already queries it forland_use_atandinfrastructure_at. The places tools read it too, by default.
Nothing is downloaded, built, or hosted — it's one more live scan of the same public Overture release, and it roughly2.5xes playground coverage (1,552 vs 674 across New York City in release2026-07-22.0, with 1,013 of them more than 150 m from any places-theme playground). Every places tool answers from both at once, with no other change: same tools, same response shape, same category filters.
The cost is a second dataset scan per places query (cached like everything else), and these rows carry noconfidenceoroperating_statusand are often unnamed — an unnamed playground comes back withname: nullrather than being dropped. If you'd rather have the latency than the coverage:
data_versionreports the layer whenever it's active. Full details, including why live Overpass queries and raw OSM Parquet were measured and rejected:docs/RECREATION.md.
uv sync # install dev dependencies uv run pytest # offline test suite uv run ruff check .
SeeCONTRIBUTING.mdfor dev setup, design rules, and how to propose a tool. Other docs:CHANGELOG·SECURITY·publishing·website·running a data mirror·the recreation layer
PlaceRoot runs on your machine — no account, no API key, no sign-up. It has no telemetry and sends nothing to us; the only network traffic is your own queries going straight to Overture Maps' public data on AWS S3 (or a mirror you configure). Full details:placeroot.dev/privacy.html.
© Overture Maps Foundation · © OpenStreetMap contributors (ODbL)
Per-theme obligations:docs/DATA-LICENSE.md.
mcp-name: io.github.chuofringer/placeroot
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