Tools (3)

geocode_address
reverse_geocode
report_feedback

geocode_address

Convert an address or place name to geographic coordinates.

Forward geocoding: searches OpenStreetMap for matching places and returns
coordinates, display name, and structured address components.

Args:
query: Address or place name (e.g. "Buckingham Palace", "Karl Johans gate 22, Oslo").
limit: Maximum results (1-20, default 5).

Parameter	Type	Required	Description
`query`	`string`	required
`limit`	`integer`	optional	(default: 5)

JSON-RPC Request

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "id": 1,
  "params": {
    "name": "geocode_address",
    "arguments": {
      "query": "example"
    }
  }
}

reverse_geocode

Convert geographic coordinates to a human-readable address.

Reverse geocoding: looks up what's at the given latitude/longitude and
returns the full address with structured components.

Args:
lat: Latitude (-90 to 90, e.g. 59.9139 for Oslo).
lon: Longitude (-180 to 180, e.g. 10.7522 for Oslo).

Parameter	Type	Required	Description
`lat`	`number`	required
`lon`	`number`	required

JSON-RPC Request

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "id": 1,
  "params": {
    "name": "reverse_geocode",
    "arguments": {
      "lat": 1.0,
      "lon": 1.0
    }
  }
}

report_feedback

Report a bug, feature request, or general feedback for this data source.

Use this when something doesn't work as expected, when you'd like
a new feature, or when you have suggestions for improvement.

Args:
feedback: Describe the issue or suggestion.
feedback_type: One of 'bug', 'feature_request', or 'general'.

Parameter	Type	Required	Description
`feedback`	`string`	required
`feedback_type`	`string`	optional	(default: "general")

JSON-RPC Request

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "id": 1,
  "params": {
    "name": "report_feedback",
    "arguments": {
      "feedback": "example"
    }
  }
}

Quick Start

Shell

curl -X POST "https://context.gnist.ai/mcp/nominatim/" \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -H "Gnist-API-Key: YOUR_API_KEY" \
  -d '{"jsonrpc": "2.0", "method": "tools/call", "id": 1, "params": {"name": "geocode_address", "arguments": {"query": "example"}}}'

Python

import httpx

resp = httpx.post(
    "https://context.gnist.ai/mcp/nominatim/",
    headers={"Gnist-API-Key": "YOUR_API_KEY", "Content-Type": "application/json"},
    json={
  "jsonrpc": "2.0",
  "method": "tools/call",
  "id": 1,
  "params": {
    "name": "geocode_address",
    "arguments": {
      "query": "example"
    }
  }
},
)
print(resp.json())