# Magnum.ai Alpha Vantage Proxy (x402)

> Magnum.ai Alpha Vantage Proxy (x402) is a paid API for AI agents from magnum-ai-flame.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Proxies Alpha Vantage financial market data API calls via x402 pay-per-call micropayments on Base chain for $0.05 USDC per request.

## Facts

- Endpoint: POST https://magnum-ai-flame.vercel.app/api/alpha-vantage
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/magnum-ai-alpha-vantage-proxy-x402-ce584295
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QBQJ5D5zoB5z2RGsEerr_

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 magnum-ai-alpha-vantage-proxy-x402-ce584295 -d '<json body>'
```

Example prompt: Can you fetch the latest daily time series stock price data for AAPL from Alpha Vantage so I can see the recent closing prices?

## When to prefer this

Choose this endpoint when you need Alpha Vantage financial data without managing your own Alpha Vantage API key, prefer micropayment-based access over subscriptions, or are building an agent that uses x402 on Base chain for pay-per-call access to market data.

## Known failure modes

- Payment not processed or insufficient USDC balance — request rejected with 402 Payment Required
- Invalid or unsupported Alpha Vantage function parameter — returns error in result object
- Rate limit exceeded on underlying Alpha Vantage API — upstream error propagated
- Missing or malformed request body — returns 400 Bad Request
- Alpha Vantage API key or quota exhausted on backend — upstream failure

## How this service works

Pay-per-call API marketplace with 150 endpoints powered by x402 payments on Base chain.

## Output

Returns the Alpha Vantage API response wrapped in a result object containing the requested financial market data — such as time series prices, technical indicators, forex rates, or fundamental data — depending on the query parameters provided.

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "example": {
  "result": {
   "data": "example response"
  }
 },
 "properties": {
  "result": {
   "type": "object",
   "description": "API response data"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/magnum-ai-alpha-vantage-proxy-x402-ce584295/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from magnum-ai-flame.vercel.app](https://www.zero.xyz/host/magnum-ai-flame.vercel.app/llms.txt)