# Alpha Vantage Daily Time Series via Locus x402

> Alpha Vantage Daily Time Series via Locus x402 is a paid API for AI agents from alphavantage.x402.paywithlocus.com, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-15).

Fetches daily OHLCV (open, high, low, close, volume) time-series data for a given stock ticker symbol, paid per-call with USDC via the x402 protocol.

## Facts

- Endpoint: POST https://alphavantage.x402.paywithlocus.com/alphavantage/time-series-daily
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/alpha-vantage-daily-time-series-via-locus-x402-1960ce16
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PBURQYL0DlCpDJE2Ah8zH

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 alpha-vantage-daily-time-series-via-locus-x402-1960ce16 -d '<json body>'
```

Example prompt: Pull the last 100 days of daily OHLCV price data for AAPL in JSON format — I want the compact output size.

## When to prefer this

Choose this endpoint when you need structured daily OHLCV historical price data for a US-listed equity and want pay-per-call micropayment billing via USDC (x402 protocol) without managing an Alpha Vantage API key subscription. Ideal for agents that need occasional or episodic stock data lookups without committing to a monthly plan, or for multi-agent workflows where each agent pays independently per request.

## Known failure modes

- Invalid or unrecognized ticker symbol returns an empty or error data object
- Network or payment settlement failure may return a non-success response
- Requesting a full output size for a very active ticker may increase latency
- Malformed datatype or outputsize parameter values may result in default behavior or errors
- Rate limits or upstream Alpha Vantage API outages may cause failures

## How this service works

Financial market data — stock prices, forex, crypto, commodities, economic indicators, technical analysis, and news sentiment.

## Output

Returns a JSON object containing a nested time-series dataset keyed by date, with daily open, high, low, close, and volume fields for the requested ticker. Also includes payment settlement details (settled and authorized USDC amounts) and a request ID with a status URL for tracking the paid API call.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "symbol": {
   "type": "string"
  },
  "datatype": {
   "type": "string"
  },
  "outputsize": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {},
  "payment": {
   "scheme": "exact",
   "settledUsdc": "0.001000",
   "authorizedMaxUsdc": "0.001000"
  },
  "request": {
   "id": "00000000-0000-4000-8000-000000000000",
   "statusUrl": "/requests/00000000-0000-4000-8000-000000000000"
  },
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/alpha-vantage-daily-time-series-via-locus-x402-1960ce16/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from alphavantage.x402.paywithlocus.com](https://www.zero.xyz/host/alphavantage.x402.paywithlocus.com/llms.txt)