# QuantaFlow x402 API Gateway — Infura Solana Devnet

> QuantaFlow x402 API Gateway — Infura Solana Devnet is a paid API for AI agents from quanta-roan.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-17).

Proxies requests to Infura's Solana Devnet RPC endpoint via the x402 pay-per-call protocol, charging $0.01 USDC per request

## Facts

- Endpoint: POST https://quanta-roan.vercel.app/api/service/infura-solana-devnet?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quantaflow-x402-api-gateway-infura-solana-devnet-65fec19f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_N6J1p2-2zUI578XkwI1xQ

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 quantaflow-x402-api-gateway-infura-solana-devnet-65fec19f -d '<json body>'
```

Example prompt: Check the current slot height on the Solana devnet via Infura — send a getSlot JSON-RPC request and give me the result.

## When to prefer this

Choose this endpoint when you need pay-per-call access to Infura's Solana Devnet RPC without managing API keys or monthly subscriptions — ideal for agents testing Solana smart contracts, scripts that need occasional devnet queries, or workflows where micropayment-based access (x402) is preferred over credential management.

## Known failure modes

- Payment failure: insufficient USDC balance causes x402 payment rejection before request is forwarded
- Invalid path: upstream returns 404 if the path does not match a valid Infura Solana Devnet route
- Malformed JSON body: Infura returns RPC error if the JSON-RPC body is missing required fields like method or params
- Network/upstream timeout: Infura Solana Devnet may be temporarily unreachable, returning a 502 or 504
- Invalid RPC method: Solana node returns error code -32601 if an unsupported method is called
- Devnet-specific limitation: some mainnet features or accounts may not exist on devnet

## How this service works

Every request, a quantum of value. x402 protocol-based payment endpoint for web3/DeFi tools.

## Output

The raw upstream JSON-RPC response from Infura's Solana Devnet node, passed through as-is after successful x402 micropayment authorization — includes Solana RPC result fields such as slot, value, context, or error details depending on the method called.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "body": {
   "type": "string",
   "description": "Optional JSON body forwarded to POST requests."
  },
  "path": {
   "type": "string",
   "description": "Path below the selected upstream origin."
  },
  "query": {
   "type": "object"
  },
  "method": {
   "enum": [
    "GET",
    "POST"
   ],
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "description": "The upstream response body and content type are passed through after successful payment."
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/quantaflow-x402-api-gateway-infura-solana-devnet-65fec19f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from quanta-roan.vercel.app](https://www.zero.xyz/host/quanta-roan.vercel.app/llms.txt)