# Cambrian Paid Resource Catalog

> Cambrian Paid Resource Catalog is a free API for AI agents from x402.cambrian.network, Free, status unknown (last checked 2026-09-14).

Returns a machine-readable list of all paid resource URLs available on the Cambrian network via the x402 payment protocol

## Facts

- Endpoint: GET https://x402.cambrian.network/.well-known/x402
- Price: Free
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cambrian-84019362
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KdUrufZFZi4-BWqx7Zlea

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 cambrian-84019362
```

Example prompt: Show me all the paid data endpoints available on Cambrian's x402 network so I can see what onchain and offchain financial intelligence resources I can subscribe to.

## When to prefer this

Use this endpoint when you need to programmatically discover all available paid data resources on the Cambrian x402 network before deciding which specific endpoint to call. It is the canonical entry point for API discovery on cambrian.network, analogous to a service directory.

## Known failure modes

- Network unavailability returns a connection error
- Catalog may be stale if Cambrian has recently added or removed endpoints
- Empty or malformed response if the .well-known endpoint is misconfigured

## How this service works

Machine-readable list of paid resource URLs (full catalog)

## Output

A machine-readable list (JSON) of all paid resource URLs offered by Cambrian via the x402 protocol, serving as a full catalog of available financial intelligence endpoints including token prices, block data, and other onchain/offchain data products.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cambrian-84019362/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.cambrian.network](https://www.zero.xyz/host/x402.cambrian.network/llms.txt)