# SigmaGrid Registry – Drift Signal

> SigmaGrid Registry – Drift Signal is a paid API for AI agents from api.sigmagrid.app, paid per call via x402, $0.03/call, status down (last checked 2026-10-12).

Returns real-time quantitative drift signals for a given stock ticker, used in algorithmic trading strategies, gated via x402 micropayment.

## Facts

- Endpoint: POST https://api.sigmagrid.app/v1/drift/%7Bticker%7D?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: down
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sigmagrid-registry-drift-signal-de72850a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OIpH_GTbRT3HsY9p7xGw4

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 sigmagrid-registry-drift-signal-de72850a -d '<json body>'
```

Example prompt: Pull the real-time drift signal for TSLA from SigmaGrid so I can decide whether my algo should enter a long position right now.

## When to prefer this

Use this endpoint when you need a real-time, pre-computed quantitative drift signal for a specific equity ticker for use in automated or algorithmic trading systems, and you are operating in an x402 micropayment-enabled environment. Prefer this over general market data APIs when you specifically need a drift-oriented quant signal rather than raw OHLCV data.

## Known failure modes

- 402 Payment Required if x402 payment header is missing or insufficient
- Invalid ticker symbol returns 400 or empty result
- Ticker not covered by SigmaGrid returns 404 or no-data response
- Network timeout if market data feed is delayed
- Stale signal if called outside market hours

## How this service works

Real-time quantitative signals for algorithmic trading, gated via the x402 payment protocol.

## Output

A quantitative drift signal value (and associated metrics) for the requested ticker, representing real-time market behavior useful for algorithmic entry/exit decisions. Response is returned after a successful x402 micropayment of $0.03 USDC.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sigmagrid-registry-drift-signal-de72850a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.sigmagrid.app](https://www.zero.xyz/host/api.sigmagrid.app/llms.txt)