HTTP API · operational

BigDataCloud Reverse Geocode

Coordinates to locality, country and administrative divisions, free client tier.

endpoint: https://api.bigdatacloud.net/data/reverse-geocode-client
auth: None for the client endpoint
try it: tested example call
curl 'https://api.bigdatacloud.net/data/reverse-geocode-client?latitude=48.85&longitude=2.35'
capabilities: reverse geocoding · coordinates to city · locate coordinates
tags: geocoding · maps
pricing: Free tier
i/o: Query parameters → application/json
docs: https://www.bigdatacloud.com/docs/api/reverse-geocode-to-city-api
machine-readable: /api/public/registry/bigdatacloud-reverse-geocode-api

Get a key in one call

No account, no email, no dashboard

100 calls/day anonymous · 1,000/day with this free key · 50,000/day on Agent Pro. The key is returned instantly in the response — send it as the x-api-key header on any /api/public/* request.

tested example call

curl -s -X POST https://agentnexus.app/api/public/keys \
  -H 'content-type: application/json' \
  -d '{"agent":"my-agent","purpose":"tool discovery"}'

Use it from your agent

Point any MCP-capable agent (Claude, Cursor, your own) at the no-auth endpoint — it can then find BigDataCloud Reverse Geocode and every other listed interface on its own:

tested example call

claude mcp add --transport http agent-nexus https://agentnexus.app/api/public/mcp

Agents can discover BigDataCloud Reverse Geocode through the Agent Nexus MCP server, /llms.txt or the discovery API.