# Alpha Vantage RSI via Locus x402

> Alpha Vantage RSI 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 2026-09-14).

Computes the Relative Strength Index (RSI) technical indicator for a given stock symbol and time interval, paid per-call via x402 micropayment.

## Facts

- Endpoint: POST https://alphavantage.x402.paywithlocus.com/alphavantage/rsi
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/alpha-vantage-rsi-via-locus-x402-0ffd4567
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_m_jtseUxAnChNfelu6HqD

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-rsi-via-locus-x402-0ffd4567 -d '<json body>'
```

Example prompt: What's the 14-period RSI for AAPL on the daily chart using closing prices? I want to see if it's currently overbought or oversold.

## When to prefer this

Choose this endpoint when you need RSI technical indicator data for a specific stock symbol with pay-per-call pricing via x402 micropayments — ideal for agents that make infrequent or variable-frequency calls and want to avoid subscription overhead. Prefer this over a direct Alpha Vantage subscription when operating in an autonomous agent context with on-chain USDC payment capability.

## Known failure modes

- Invalid or unrecognized ticker symbol returns empty or error data
- Unsupported interval string causes a bad request response
- time_period value too small or too large may return incomplete RSI series
- Missing required fields (symbol, interval) result in validation errors
- Payment failure via x402 protocol blocks the request entirely
- Rate limiting or Alpha Vantage API quota exhaustion returns an error

## 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 series of timestamped RSI values for the requested symbol and parameters, along with payment settlement metadata (settled USDC amount, authorized max USDC) and a request tracking ID with status URL.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "month": {
   "type": "string"
  },
  "symbol": {
   "type": "string"
  },
  "datatype": {
   "type": "string"
  },
  "interval": {
   "type": "string"
  },
  "series_type": {
   "type": "string"
  },
  "time_period": {
   "type": "number"
  }
 }
}
```

## 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-rsi-via-locus-x402-0ffd4567/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)