# Spraay Gateway RPC Chain Listing

> Spraay Gateway RPC Chain Listing is a paid API for AI agents from gateway.spraay.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Returns a list of all supported RPC blockchain networks and their available methods on the Spraay gateway.

## Facts

- Endpoint: GET https://gateway.spraay.app/api/v1/rpc/chains
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gateway-spraay-app-85473dd9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_R4Uk7lW9RTvlf0SDVVGuj

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 gateway-spraay-app-85473dd9
```

Example prompt: What blockchain networks and RPC methods are supported on the Spraay gateway? I want to know which chains I can route RPC calls through.

## When to prefer this

Use this endpoint when you need to discover which blockchain networks and RPC methods are available before routing RPC calls through the Spraay gateway. Prefer this over hardcoding chain lists or using other RPC discovery mechanisms when already integrated with Spraay's x402-based gateway.

## Known failure modes

- Payment failure (402): x402 micropayment not attached or insufficient; returns 402 status
- Gateway unavailable (503): upstream infrastructure down
- Empty chains array: no chains currently configured or enabled

## How this service works

List supported RPC chains and methods.

## Output

An array of supported blockchain chains, each with their chain identifiers and the RPC methods available for that chain on the Spraay gateway.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {}
 }
}
```

## 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",
     "properties": {
      "chains": {
       "type": "array"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gateway-spraay-app-85473dd9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gateway.spraay.app](https://www.zero.xyz/host/gateway.spraay.app/llms.txt)