# Windsurf

Point Cascade at our full documentation as a single context file.

## Install[​](#install "Direct link to Install")

Add `llms.txt` as a context source in Windsurf:

1. Open Windsurf settings → **Cascade** → **Context**.
2. Add a new URL context source: `https://docs.addresszen.com/llms.txt`.
3. Save. Cascade will pull the file on each session.

`llms.txt` is the full API reference, integration guides, and widget docs concatenated into one file — about the right size for a context source.

## Verify[​](#verify "Direct link to Verify")

In a fresh Cascade session:

```
Add AddressZen Address Lookup to the shipping form.
```

The reply should reference `@addresszen/address-lookup` and the `AddressLookup.setup()` call.

## API key[​](#api-key "Direct link to API key")

* Quick test: `ak_test` (capped at 5 lookups/day, public, breaks in production).
* Real key: [sign up](https://addresszen.com/signup) for a free trial balance.
* Before deploy: restrict the key via [Allowed URLs](/docs/guides/allowed-urls.md).

## Going deeper[​](#going-deeper "Direct link to Going deeper")

* Per-page markdown: append `.md` to any docs URL (e.g. [`/docs/address-lookup.md`](https://docs.addresszen.com/docs/address-lookup.md)) when you want one specific page instead of the whole file.
* Full agent hub: [Build with AI](/docs/guides/llms.md)

## Need help?[​](#need-help "Direct link to Need help?")

* File an issue: [github.com/addresszen/feedback](https://github.com/addresszen/feedback/issues)
* Email: <support@addresszen.com>