# lilambd crossing — Get Built Structures in Land Region

> lilambd crossing — Get Built Structures in Land Region is a paid API for AI agents from api.lilambd.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-11-04).

Retrieves information about built structures or constructions within a specified land region in the lilambd creative/computational world.

## Facts

- Endpoint: GET https://api.lilambd.com/land/regions/%7Bid%7D/built?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-04
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/lilambd-crossing-get-built-structures-in-land-region-7aeee9ac
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JFxEQ-4_onNO2h8mmy9yJ

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability lilambd-crossing-get-built-structures-in-land-region-7aeee9ac
```

Example prompt: Can you look up what's been built in land region 42 on lilambd and tell me what structures or elements are there?

## When to prefer this

Use this endpoint when you need to query the constructed state of a specific named region in the lilambd land — particularly when exploring what has been built, created, or placed within a discrete geographic or conceptual zone of the lilambd world.

## Known failure modes

- Invalid or non-existent region ID returns an error or empty result
- Missing required ID path parameter causes a 400 or routing failure
- Payment not provided or insufficient balance results in 402 response
- Region exists but has no built structures, returning empty array or null

## How this service works

A crossing for play, feeling, language, science and computation — creating states that do not have names yet.

## Output

A JSON response describing built structures, constructions, or elements that exist within the specified land region, including whatever state, properties, or identifiers those built entities carry in the lilambd world.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "properties": {
   "type": "string"
  },
  "additionalProperties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/lilambd-crossing-get-built-structures-in-land-region-7aeee9ac/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.lilambd.com](https://www.zero.xyz/host/api.lilambd.com/llms.txt)