# QuantaFlow x402 API Gateway — Alchemy Katana Bokuto

> QuantaFlow x402 API Gateway — Alchemy Katana Bokuto is a paid API for AI agents from quanta-roan.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Proxies paid API requests to the Alchemy Katana/Bokuto web3 endpoint via x402 micropayment protocol at $0.01 USDC per call

## Facts

- Endpoint: POST https://quanta-roan.vercel.app/api/service/alchemy-katana-bokuto?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quantaflow-x402-api-gateway-alchemy-katana-bokuto-23c9f976
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Idebg9puTf06jVduXlVqg

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-alchemy-katana-bokuto-23c9f976 -d '<json body>'
```

Example prompt: Forward a GET request to the Alchemy Katana Bokuto API at path /v1/markets with query params symbol=ETH and pay the $0.01 USDC micropayment automatically.

## When to prefer this

Choose this endpoint when you need programmatic, pay-per-call access to Alchemy Katana or Bokuto web3/DeFi tools without a subscription, using x402 micropayments billed at $0.01 USDC per request. It is ideal for agents that need occasional or variable-volume DeFi data without committing to a monthly API plan.

## Known failure modes

- Payment failure — insufficient USDC balance or wallet not configured for x402 results in 402 Payment Required
- Invalid path — upstream returns 404 if the specified API path does not exist on Alchemy Katana/Bokuto
- Malformed body — upstream may return 400 if the forwarded JSON body is invalid
- Rate limiting — upstream Alchemy endpoint may throttle repeated rapid requests
- Upstream downtime — Alchemy Katana/Bokuto unavailability results in 502 or timeout errors

## How this service works

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

## Output

The raw upstream response body and content type from the Alchemy Katana/Bokuto API, passed through transparently after the x402 micropayment of $0.01 USDC is settled.

## 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-alchemy-katana-bokuto-23c9f976/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)