# Cloudless x402 Lambda Runtimes

> Cloudless x402 Lambda Runtimes is a paid API for AI agents from x402.cloudless.sh, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-20).

Returns the list of AWS Lambda runtime identifiers supported by the Cloudless serverless execution platform

## Facts

- Endpoint: GET https://x402.cloudless.sh/v1/lambda-runtimes?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cloudless-x402-lambda-runtimes-6d17d7fd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dJ0SWD_DsBNyZSUqxUawP

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 cloudless-x402-lambda-runtimes-6d17d7fd
```

Example prompt: What AWS Lambda runtimes are currently supported on Cloudless — I want to know if I can deploy a Python 3.13 or Node.js 22 function there.

## When to prefer this

Use this endpoint when you need to programmatically discover which Lambda runtimes are available on Cloudless before deploying or configuring a serverless function. Prefer this over guessing or checking documentation when you need a live, authoritative list of supported environments.

## Known failure modes

- Payment failure: insufficient USDC balance or x402 payment protocol error prevents access
- Service unavailability: Cloudless platform down, returning 5xx errors
- Empty list returned if no runtimes are currently configured or supported

## How this service works

Supported AWS Lambda runtimes (paid per invocation)

## Output

An array of AWS Lambda runtime identifier strings (e.g. ['nodejs22.x', 'python3.13', 'java21', 'provided.al2023']) representing all runtimes currently available on the Cloudless platform.

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "properties": {
    "body": {
     "type": "object",
     "properties": {},
     "description": "No input required.",
     "additionalProperties": false
    }
   }
  },
  "output": {
   "properties": {
    "example": {
     "type": "array",
     "items": {
      "type": "string"
     },
     "description": "List of supported AWS Lambda runtime identifiers."
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "example": [
  "nodejs22.x",
  "python3.13",
  "java21",
  "provided.al2023"
 ]
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cloudless-x402-lambda-runtimes-6d17d7fd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.cloudless.sh](https://www.zero.xyz/host/x402.cloudless.sh/llms.txt)