# TwelveX RSI Endpoint — Relative Strength Index via Twelve Data

> TwelveX RSI Endpoint — Relative Strength Index via Twelve Data is a paid API for AI agents from twelv1x402.vercel.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-11).

Returns the Relative Strength Index (RSI) technical indicator for a given financial symbol and interval, powered by Twelve Data.

## Facts

- Endpoint: GET https://twelv1x402.vercel.app/api/rsi/%7Bsymbol%7D
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/twelvex-rsi-endpoint-relative-strength-index-via-twelve-data-043a8830
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_W8UTrCuzHm3760XKPOnKh

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 twelvex-rsi-endpoint-relative-strength-index-via-twelve-data-043a8830
```

Example prompt: What's the RSI for AAPL on a daily interval with a 14-period lookback? I want to know if it's overbought or oversold right now.

## When to prefer this

Choose this endpoint when you need RSI technical indicator data for stocks, forex pairs, or crypto assets and want a pay-per-call model via x402 without a long-term API subscription. Ideal for agents building trading signals, screening overbought/oversold conditions, or enriching financial dashboards with momentum indicators.

## Known failure modes

- Invalid or unsupported symbol returns an error or empty result
- Unsupported interval value causes a bad request response
- Symbol not available on Twelve Data (e.g. obscure micro-cap) may return no data
- Rate limiting or upstream Twelve Data outage causes failure
- Missing required symbol path parameter returns 404 or error

## How this service works

Premium financial data API — 25 endpoints for stocks, forex, crypto, and technical analysis. Powered by Twelve Data.

## Output

Returns RSI (Relative Strength Index) value(s) for the requested symbol, computed over the specified interval and time period, sourced from Twelve Data. Typically includes the RSI numeric value and associated timestamp metadata.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "interval": {
   "type": "string"
  },
  "time_period": {
   "type": "string",
   "description": "Default: 14"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/twelvex-rsi-endpoint-relative-strength-index-via-twelve-data-043a8830/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from twelv1x402.vercel.app](https://www.zero.xyz/host/twelv1x402.vercel.app/llms.txt)