# lilambd Crossing — Categories Endpoint

> lilambd Crossing — Categories Endpoint 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).

Returns the available categories of generative/experimental content offered by the lilambd crossing platform, spanning play, feeling, language, science, and computation.

## Facts

- Endpoint: GET https://api.lilambd.com/agents/x402/categories?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-categories-endpoint-aedf2e6b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_crrzioLK0ModUoCdl3k69

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-categories-endpoint-aedf2e6b
```

Example prompt: Can you show me all the categories available on lilambd crossing — I want to explore what kinds of play, feeling, and computation experiences they offer?

## When to prefer this

Use this endpoint when you need to discover or enumerate the top-level content areas or capability domains offered by the lilambd crossing platform before making deeper requests. It is the entry point for navigating lilambd's experimental generative offerings.

## Known failure modes

- 402 Payment Required if the $0.005 USDC payment header is missing or invalid
- Empty or malformed JSON if the service is unavailable
- Unexpected schema if categories have changed and documentation is stale
- Network timeout if the lilambd API is unresponsive

## 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 listing the available categories on the lilambd crossing platform, likely including names and possibly descriptions or metadata for each category (e.g. play, feeling, language, science, computation and emergent/unnamed states).

## 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-categories-endpoint-aedf2e6b/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)