ModelsAtlas
Explore
Atlas / MCP servers / wiseman / Osm

OsmSAFE

mcp/wiseman/osm
MCP server by wiseman · Audited 2026-10-07
⚑ Report / re-scanSource ↗

Model Context Protocol server for OpenStreetMap data

Verdict
SAFE
Grade
B
Trust score
89 /100
Exposed tools
8 3r · 5w · 0d
Transport
—
License
—
Stars
88
01

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

This package provides OpenStreetMap integration for MCP, allowing users to query and visualize map data through an MCP interface.

[](osm-mcp.webp)

Features

  • Web-based map viewer using Leaflet and OpenStreetMap
  • Server-to-client communication via Server-Sent Events (SSE)
  • MCP tools for map control (adding markers, polygons, setting view, getting view)
  • PostgreSQL/PostGIS query interface for OpenStreetMap data

Installation

This is my claude_desktop_config.json:

{
"mcpServers": {
"OSM PostgreSQL Server": {
"command": "/Users/wiseman/.local/bin/uv",
"args": [
"run",
"--env-file",
".env",
"--with",
"mcp[cli]",
"--with",
"psycopg2",
"--with-editable",
"/Users/wiseman/src/mcp-osm",
"--directory",
"/Users/wiseman/src/mcp-osm",
"mcp",
"run",
"mcp.py"
]
}
}
}

When the MCP server starts it also starts a web server at http://localhost:8889/ that has the map interface.

Environment Variables

The following environment variables can be used to configure the MCP:

  • FLASK_HOST - Host for the Flask server (default: 127.0.0.1)
  • FLASK_PORT - Port for the Flask server (default: 8889)
  • PGHOST - PostgreSQL host (default: localhost)
  • PGPORT - PostgreSQL port (default: 5432)
  • PGDB - PostgreSQL database name (default: osm)
  • PGUSER - PostgreSQL username (default: postgres)
  • PGPASSWORD - PostgreSQL password (default: postgres)

MCP Tools

The following MCP tools are available:

  • get_map_view - Get the current map view
  • set_map_view - Set the map view to specific coordinates or bounds
  • set_map_title - Set the title displayed at the bottom right of the map
  • add_map_marker - Add a marker at specific coordinates
  • add_map_line - Add a line defined by a set of coordinates
  • add_map_polygon - Add a polyg
Read from source at commit 3b8793eefc33OBSERVED · 2026-10-07
02

Connect

Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control. Replace the environment placeholders with a token scoped to the least it needs.

claude-code
claude mcp add mcp-osm --env PGPASSWORD=${PGPASSWORD} -- uvx mcp-osm
claude-desktop
{
  "mcpServers": {
    "mcp-osm": {
      "command": "uvx",
      "args": [
        "mcp-osm"
      ],
      "env": {
        "PGPASSWORD": "${PGPASSWORD}"
      }
    }
  }
}
03

Exposed tools (8)

3 read · 5 write · 0 destructive.

ToolRiskDescription
add_map_linewrite
add_map_markerwrite
add_map_polygonwrite
geolocateread
get_map_viewread
query_osm_postgresread
set_map_titlewrite
set_map_viewwrite
04

Trust audit

SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.

LayerWhat it checksResult
L0Provenance & inventoryPASS
L1Static analysis of the codeWARN
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfacePASS
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
none-observed
Network
declared (1 observation(s))
Shell
none-observed
Dependencies
pinned
Secrets in source
none-found

Findings (2)

MEDIUMNetwork egress · net.raw_ip · CWE-200, CWE-319
map_demo.py:20
print("Map server started. Open http://127.0.0.1:5000 in your browser.")
LOWInventory / provenance · inv.no_license · CWE-1104
Why it matters. no LICENSE file and no repo licence
Fix. add a licence

Gates applied: no_behavioural_pass, no_license.

Audited 2026-10-07 · audit v0.4.1 · source sha 3b8793eefc33full audit observations/trust-audit/mcp-server/wiseman__osm.json · Report an issue / request a re-scan
05

Audit history

Every audit this server has had. A grade with a past is a grade somebody is still checking.

DateSourceVerdictGradeScoreChange
2026-10-073b8793eefc33SAFEB89first audit
06

Questions

What is the Osm MCP server?

Model Context Protocol server for OpenStreetMap data

What tools does Osm expose?

8 in total: 3 read-only, 5 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.

Is Osm safe to connect to an agent?

The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.

What credentials does Osm need?

It reads PGPASSWORD from the environment. Give it a token scoped to the least it needs — an agent that can be talked into calling a tool can be talked into calling it with your credentials.

How current is this page?

The grade is for one exact copy of the source (3b8793eefc33), read on 2026-10-07. The repository is watched and re-audited when it changes.

Advertisement