# Cambrian x402 API – EVM Alien V3 Pools

> Cambrian x402 API – EVM Alien V3 Pools is a paid API for AI agents from x402.cambrian.org, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Returns a list of Alien V3 liquidity pool data on EVM-compatible blockchains, paid per-use via x402.

## Facts

- Endpoint: GET https://x402.cambrian.org/evm/alien/v3/pools
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cambrian-x402-api-evm-alien-v3-pools-546bdbf0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YZERNZXZOaRLAIECpyOpm

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-x402-api-evm-alien-v3-pools-546bdbf0
```

Example prompt: Can you pull the current Alien V3 liquidity pool listings on EVM from Cambrian's x402 API so I can see which pools are available for trading?

## When to prefer this

Use this endpoint when you specifically need Alien V3 pool data on EVM chains and are operating in an autonomous agent context that supports x402 pay-per-use micropayments. Prefer this over general blockchain explorers when you need structured, programmatic pool data without scraping, and when you are already integrated with Cambrian's x402 ecosystem.

## Known failure modes

- 402 Payment Required if x402 payment header is missing or insufficient
- Empty array if no pools match the given query parameters
- Invalid query parameter format returning an error or unexpected results
- Network timeout or upstream blockchain data unavailability
- Authentication or wallet signature failure for x402 payment flow

## How this service works

Pay-per-use blockchain and social data for autonomous agents.

## Output

An array of Alien V3 liquidity pool objects on EVM chains, likely including pool addresses, token pair information, fee tiers, and related pool metadata. Exact fields depend on the pool index returned.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "queryParams": {
     "type": "object",
     "additionalProperties": true
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "example": {
     "type": "array"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cambrian-x402-api-evm-alien-v3-pools-546bdbf0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.cambrian.org](https://www.zero.xyz/host/x402.cambrian.org/llms.txt)