# ONE Engine T3 Moving Average

> ONE Engine T3 Moving Average is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).

Computes the Triple Exponential Moving Average (T3) of a numeric series with configurable smoothing parameters.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/numeric/moving-average/t3?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/one-engine-t3-moving-average-326b2362
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-puT2cR9EjSAteRymQIZ6

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 one-engine-t3-moving-average-326b2362 -d '<json body>'
```

Example prompt: Compute the T3 triple exponential moving average for these 20 closing prices [102.5, 103.1, 104.0, ...] using a window size of 5 and a smoothing factor of 0.7, rounded to 4 decimal places.

## When to prefer this

Choose this endpoint when you need a low-latency, pay-per-call T3 triple exponential moving average computation without hosting your own math library. It is ideal for autonomous agents that need on-demand technical analysis indicators, especially in x402-enabled on-chain or crypto-adjacent workflows on Base. Prefer this over general-purpose EMA endpoints when T3's superior lag reduction and smoothness are required for trading signals or sensor data.

## Known failure modes

- Input array exceeds 1000 elements — request will be rejected
- Non-finite values (NaN, Infinity) in the values array cause computation failure
- Invalid or missing 'values' field returns a 400-level error
- Payment not attached or insufficient USDC balance causes 402 Payment Required
- Factor or size values outside valid ranges may produce unexpected results

## How this service works

Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.

## Output

Returns a JSON object containing the T3 moving average output — typically an array of smoothed numeric values corresponding to the input series, with leading values omitted or null during the warm-up period, formatted to the requested decimal precision.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "values"
 ],
 "properties": {
  "max": {
   "type": "number"
  },
  "min": {
   "type": "number"
  },
  "size": {
   "type": "integer"
  },
  "digits": {
   "type": "integer"
  },
  "factor": {
   "type": "number"
  },
  "offset": {
   "type": "number"
  },
  "values": {
   "type": "array",
   "description": "Finite numbers, maximum 1000"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-t3-moving-average-326b2362/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from one-search.one-engine.workers.dev](https://www.zero.xyz/host/one-search.one-engine.workers.dev/llms.txt)