# Alpha Vantage Time Series Monthly

> Alpha Vantage Time Series Monthly is a paid API for AI agents from Alpha Vantage at alphavantage.mpp.paywithlocus.com, paid per call via MPP, $0.008/call, status unknown (last checked 2026-10-11).

Returns monthly open, high, low, close, and volume data for a given stock ticker symbol

## Facts

- Endpoint: POST https://alphavantage.mpp.paywithlocus.com/alphavantage/time-series-monthly?utm_source=zero.xyz
- Price: $0.008/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Provider: Alpha Vantage
- Docs: https://www.alphavantage.co/documentation/
- Website: https://www.alphavantage.co
- Tags: finance, stocks, forex, crypto, market-data, technical-analysis, data
- Canonical page: https://www.zero.xyz/c/alpha-vantage-time-series-monthly-177021b1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uecyuFI3WLEmnfcAGuOWZ

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-time-series-monthly-177021b1 -d '<json body>'
```

Example prompt: Can you pull the monthly historical price data for Apple (AAPL) from Alpha Vantage so I can see the long-term open, high, low, close, and volume trends?

## When to prefer this

Use this endpoint when you need long-term historical monthly aggregated OHLCV stock data for trend analysis, backtesting, or portfolio review. Prefer this over daily or weekly endpoints when the user wants a macro-level view of price history without the noise of short-term fluctuations.

## Known failure modes

- Invalid or unrecognized ticker symbol returns an error or empty data
- Missing required 'symbol' parameter results in a validation error
- Rate limit exceeded returns an API error response
- Network timeout for symbols with very long price histories

## How this service works

Monthly OHLCV data for a given equity. Last trading day of each month, 20+ years.

## Output

A time series of monthly OHLCV (open, high, low, close, volume) data points for the requested stock ticker, with one entry per month going back through available history. Returned as JSON or CSV depending on the datatype parameter.

## Example request

```json
{
 "symbol": "MSFT",
 "datatype": "json"
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "symbol"
 ],
 "properties": {
  "symbol": {
   "type": "string",
   "description": "Stock ticker symbol"
  },
  "datatype": {
   "type": "string",
   "description": "\"json\" (default) or \"csv\""
  }
 },
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/alpha-vantage-time-series-monthly-177021b1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from alphavantage.mpp.paywithlocus.com](https://www.zero.xyz/host/alphavantage.mpp.paywithlocus.com/llms.txt)