# QuantaFlow x402 API Gateway – rapid-flashapi1

> QuantaFlow x402 API Gateway – rapid-flashapi1 is a paid API for AI agents from quanta-roan.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).

Proxies HTTP requests to a web3/DeFi upstream API endpoint via the x402 micropayment protocol, charging $0.01 USDC per call.

## Facts

- Endpoint: POST https://quanta-roan.vercel.app/api/service/rapid-flashapi1?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quantaflow-x402-api-gateway-rapid-flashapi1-eaf22d55
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_C1JkaCvqqLQppuzICxyuv

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-rapid-flashapi1-eaf22d55 -d '<json body>'
```

Example prompt: Using the QuantaFlow x402 gateway, forward a POST request to the path '/rapid-flashapi1' with this JSON body: {"token":"ETH","amount":"1.0"} and include any relevant query parameters — it will charge $0.01 USDC per call via x402.

## When to prefer this

Choose this endpoint when you need pay-per-use access to a web3 or DeFi upstream API and want automatic micropayment settlement via the x402 protocol without managing subscriptions or API keys. It is best suited for agents that need to call blockchain/crypto tooling on an infrequent or variable basis at low per-call cost ($0.01 USDC).

## Known failure modes

- Payment failure: insufficient USDC balance causes x402 payment rejection and the request is not forwarded
- Invalid path: upstream returns 404 if the specified path does not exist on the upstream origin
- Malformed body: upstream API may return 400 if the JSON body is invalid
- Upstream unavailability: upstream DeFi/web3 service is down, returning 502 or 503
- Schema mismatch: query or body parameters not accepted by the upstream API

## How this service works

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

## Output

The raw response body and content type from the upstream web3/DeFi API are passed through transparently after the x402 micropayment ($0.01 USDC) is confirmed. No transformation is applied to the upstream response.

## 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-rapid-flashapi1-eaf22d55/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)