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Geocode addresses, reverse geocode coordinates, and run Overpass spatial queries on OpenStreetMap data.
Do not connect
A critical issue was found. Do not connect this server as-is.
Scanned 1 month ago Due for re-check
A server can change after it's graded. Re-run the automated scan to refresh this report.
This grade is deterministic and reproducible: the same server surface always yields the same grade under a given algorithm version. It is a real automated assessment computed by the MCPGrade engine from what the probe actually observed — not a fabricated or opinion score. It is not a manual human pentest, so it can miss context-specific risks.
Every signal below was measured directly by the automated probe. The grade is derived only from evidence like this — nothing is assumed.
The openstreetmap-mcp-server MCP server exposes 6 tools, focused primarily on database capabilities. Its published description reads: "Geocode addresses, reverse geocode coordinates, and run Overpass spatial queries on OpenStreetMap data". It communicates over Streamable HTTP using the 2025-06-18 protocol revision, and does not require authorization to connect. MCPGrade currently rates openstreetmap-mcp-server F — a critical issue was found and the server should not be connected as-is. Its most notable findings include "Data-exfiltration parameters" and "Cross-tool shadowing". This report is a deterministic, reproducible automated assessment: the same observed surface always yields the same grade under a given algorithm version, and it is refreshed as new scans arrive and free to read — but it is not a substitute for a manual human security review. Always re-check openstreetmap-mcp-server's advertised tools, transport security, and authorization posture before connecting an autonomous agent or sharing sensitive context with it.
Add openstreetmap-mcp-server to an MCP client using the endpoint below. Review the grade and findings above before granting an autonomous agent access.
MCP endpoint
https://openstreetmap.caseyjhand.com/mcpStreamable HTTP transport. This is the MCP endpoint, not a website — paste it into your MCP client server list rather than a browser.
Captured passively during the read-only scan. Click any value to find servers that match it.
The tools this server advertises via tools/list — names, purposes, and the parameters each accepts, exactly as enumerated read-only.
Convert a place name or address to geographic coordinates and structured place data via Nominatim/OpenStreetMap. Accepts either a free-form query string (e.g., "Space Needle Seattle") or structured ad
Sorted worst-first. Each finding shows its severity, what it means, its OWASP MCP Top-10 mapping, and a recommended fix — the check id links to the exact methodology row that produced it.
tool: openstreetmap_search_places
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
an intermediate token is not a matching containment level. For examplRecommendationRemove side-channel parameters; constrain tool inputs.
tool: openstreetmap_search_places
A tool description tries to alter the model’s use of another tool.
in an area, use openstreetmap_query_nearby or openstreetmap_query_bbox instead — NominatimRecommendationDescriptions must describe only their own tool.
tool: openstreetmap_reverse_geocode
A tool description tries to alter the model’s use of another tool.
given tag, use openstreetmap_query_nearby, openstreetmap_query_bbox, or openstreetmap_queRecommendationDescriptions must describe only their own tool.
tool: openstreetmap_lookup_objects
A tool description tries to alter the model’s use of another tool.
wn from a prior openstreetmap_query_nearby or openstreetmap_query_bbox result — this is moRecommendationDescriptions must describe only their own tool.
tool: openstreetmap_query_nearby
A tool description tries to alter the model’s use of another tool.
ominatim-backed openstreetmap_search_places, openstreetmap_reverse_geocode, and openstreetmRecommendationDescriptions must describe only their own tool.
tool: openstreetmap_query_bbox
A tool description tries to alter the model’s use of another tool.
ominatim-backed openstreetmap_search_places, openstreetmap_reverse_geocode, and openstreetmRecommendationDescriptions must describe only their own tool.
tool: openstreetmap_query_raw
Tools that execute commands / write files / make arbitrary requests are exposed without annotations or guards.
etmap_query_raw Execute a raw Overpass QL query Execute a raw Overpass QL query for advanced spRecommendationAnnotate destructive tools and require human approval.
tool: openstreetmap_query_raw
A tool description tries to alter the model’s use of another tool.
?" queries, use openstreetmap_query_nearby or openstreetmap_query_bbox instead.RecommendationDescriptions must describe only their own tool.
tool: openstreetmap_query_raw
A database tool exposes a query/sql parameter that is a free-form string with no allow-list or parameterisation constraint — a raw-string injection surface. A tool exposing structured filters or an `enum` of named queries does not fire.
unconstrained query parameter "query"RecommendationExpose parameterised operations instead of a raw query string; never build queries from unvalidated model output.
tool: (server instructions)
A tool description tries to alter the model’s use of another tool.
de endpoints via OSM_NOMINATIM_BASE_URL or OSM_OVERPASS_BASE_URL for priRecommendationDescriptions must describe only their own tool.
The server accepts tool enumeration (and likely invocation) with no authentication.
RecommendationRequire OAuth 2.1 authorization for any server exposing non-public tools.
tool: openstreetmap_search_places
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: openstreetmap_reverse_geocode
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: openstreetmap_lookup_objects
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: openstreetmap_query_nearby
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: openstreetmap_query_bbox
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: openstreetmap_query_raw
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
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Convert latitude/longitude coordinates to the nearest address or place name via Nominatim/OpenStreetMap. Returns the closest matching OSM object at the given coordinates. Note: Nominatim finds the nea
Fetch address details for one or more known OSM objects by their IDs via Nominatim. Each ID must be prefixed with N (node), W (way), or R (relation), e.g., "N240109189", "W50637691", "R146656". Up to
Find OSM features within a radius around a geographic point via the Overpass API. The primary tool for "what's near X?" spatial queries. Use amenity for common POI types (hospital, pharmacy, restauran
Find OSM features within a rectangular geographic area (bounding box) via the Overpass API. Useful for area surveys where you want everything in a region, not proximity searches. Use amenity for commo
Execute a raw Overpass QL query for advanced spatial queries that the convenience tools do not cover. Use for multi-type queries, union queries, relation membership, historical queries, or any operati