Postcodes.io (UK)
places:postcodes-io · postcodes.io ↗
Free UK postcode lookup, validation, nearest postcodes and reverse geocoding (Open Government Licence data).
About the Postcodes.io (UK) API
Postcodes.io (UK) API on Apizie: 4 endpoints (Look up a postcode, Validate a postcode, Nearest postcodes, Autocomplete) returned as clean JSON through one API key. 4 endpoints are live now. Call it over REST at https://zieapi.vercel.app/v1/places:postcodes-io/{endpoint} or from Claude, ChatGPT and Cursor through the Apizie MCP server. Free plan: 1,000 requests a month.
| Project key | places:postcodes-io |
|---|---|
| Status | Live |
| Endpoints | 4 |
| Category | Places |
| Source | postcodes.io |
| Base URL | https://zieapi.vercel.app/v1/places:postcodes-io/{endpoint} |
| For AI tools | OpenAPI spec · Markdown (what is this?) |
Postcodes.io (UK) API FAQ
How do I call the Postcodes.io (UK) API?
Create a free Apizie key, then send GET https://zieapi.vercel.app/v1/places:postcodes-io/lookup with the header x-api-key. Every endpoint returns { project, data, timestamp }.
Is the Postcodes.io (UK) API free on Apizie?
Yes. The Free plan includes 1,000 requests a month at 100 requests a minute, no credit card.
Can AI agents use the Postcodes.io (UK) API?
Yes. Add the Apizie MCP server (https://zieapi.vercel.app/mcp) to Claude, ChatGPT, Cursor or VS Code, then ask in plain language. The agent calls run_scraper with project key places:postcodes-io.
What is the status of the Postcodes.io (UK) API?
Live: works with just an Apizie key