# QuantaFlow x402 API Gateway – Arkham Intelligence Proxy

> QuantaFlow x402 API Gateway – Arkham Intelligence Proxy 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 requests to the Arkham Intelligence web3/DeFi data platform via the x402 micropayment protocol, charging $0.01 USDC per call

## Facts

- Endpoint: POST https://quanta-roan.vercel.app/api/service/arkham?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-arkham-intelligence-proxy-7d7337e6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TLeNAhlPTDLlNiXSiGwhj

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-arkham-intelligence-proxy-7d7337e6 -d '<json body>'
```

Example prompt: Look up the entity labels and on-chain activity for wallet address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 using Arkham Intelligence — I want to know who it belongs to and any associated entities.

## When to prefer this

Choose this endpoint when you need on-demand access to Arkham Intelligence blockchain analytics data without a direct Arkham subscription, and you want to pay per-query via the x402 USDC micropayment protocol. Ideal for agents that need occasional wallet attribution or entity lookups rather than high-volume continuous access.

## Known failure modes

- Insufficient USDC balance causes payment failure and 402 response
- Invalid or unsupported Arkham API path returns 404 or upstream error
- Malformed JSON body results in upstream 400 bad request
- Arkham API rate limits triggered on the upstream side return 429
- x402 facilitator unavailable causes payment processing failure
- Missing or invalid query parameters produce empty or error responses from Arkham

## How this service works

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

## Output

The raw upstream response from the Arkham Intelligence API, passed through after successful x402 micropayment verification. Typically includes entity labels, wallet attribution data, on-chain transaction history, or DeFi intelligence depending on the queried path.

## 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-arkham-intelligence-proxy-7d7337e6/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)