# Compute API Version Info

> Compute API Version Info is a paid API for AI agents from compute-api-production-245d.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-29).

Returns the x402 protocol version, supported chains, features, and seller address for this Compute API instance

## Facts

- Endpoint: GET https://compute-api-production-245d.up.railway.app/version?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/compute-api-version-info-dfe8590e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LbuJWYlF7O1FU4xnDNv6R

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 compute-api-version-info-dfe8590e
```

Example prompt: What version of the x402 protocol is this compute API running, and which chains and features does it support?

## When to prefer this

Use this endpoint when you need to programmatically discover the protocol version, chain compatibility, or seller address of this Compute API before making downstream compute calls. It is the canonical introspection endpoint for this x402-enabled service and requires no input parameters.

## Known failure modes

- Service unavailable (Railway deployment down) — returns 5xx
- Payment not provided or insufficient — returns 402 with payment details
- Malformed request — returns 400 if method is not GET

## How this service works

x402 protocol version, chains, features, seller address

## Output

Returns a JSON object containing the x402 protocol version string, a list of supported blockchain chains (e.g. Base), available features, and the seller's payment address used for micropayment routing.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/compute-api-version-info-dfe8590e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from compute-api-production-245d.up.railway.app](https://www.zero.xyz/host/compute-api-production-245d.up.railway.app/llms.txt)