overpass.search.transit
Find public transport infrastructure within a geographic bounding box. Supports bus stops, railway stations, subway/metro stations, tram stops, and ferry terminals. Returns stop name, transport type, coordinates, network/operator name, route reference, and wheelchair accessibility. Filter by tran...
This record as markdown: /tools/io-github-whiteknightonhorse-apibase/overpass.search.transit.md
What overpass.search.transit does on Apibase
AI agents call overpass.search.transit to retrieve information from Apibase without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
limit | integer | — | Maximum number of results to return (1–50, default 20). |
lat_max | number | Yes | Northern boundary latitude of the search bounding box. |
lat_min | number | Yes | Southern boundary latitude of the search bounding box. |
lon_max | number | Yes | Eastern boundary longitude of the search bounding box. |
lon_min | number | Yes | Western boundary longitude of the search bounding box. |
transport_type | string | — | Type of public transport to find: "bus" (bus stops), "train" (railway stations), "subway" (metro stations), "tram" (tram stops), "ferry" (ferry terminals), "all |
Parameters from the server's own tool schema.
Why overpass.search.transit is rated Low
Retrieves public transit location data with no side effects or data modification capabilities.
From the tool's definition Find public transport infrastructure within geographic bounding box. Returns stop name, coordinates, operator name, route reference.
Attacks that exploit this kind of access
The rule that runs overpass.search.transit safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Apibase, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For overpass.search.transit, this is the rule to start with:
overpass.search.transit is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Apibase, apply this rule, and every overpass.search.transit call is checked against it from then on.
Questions about overpass.search.transit
Find public transport infrastructure within a geographic bounding box. Supports bus stops, railway stations, subway/metro stations, tram stops, and ferry terminals. Returns stop name, transport type, coordinates, network/operator name, route reference, and wheelchair accessibility. Filter by transport type or fetch all transit infrastructure in the area. Data sourced from OpenStreetMap via Overpass API — especially comprehensive for European cities. Useful for trip planning, accessibility analysis, and finding the nearest metro or train station. It is categorised as a Read tool in the Apibase MCP Server, which means it retrieves data without modifying state.
overpass.search.transit accepts 6 parameters: limit, lat_max, lat_min, lon_max, lon_min, transport_type. Required: lat_max, lat_min, lon_max, lon_min. The full parameter table on this page comes from the server's own tool schema.
Register the Apibase MCP server in PolicyLayer and add a rule for overpass.search.transit: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Apibase. Nothing to install.
overpass.search.transit is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the overpass.search.transit rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for overpass.search.transit. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
overpass.search.transit is provided by the Apibase MCP server (apibase-mcp-client). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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