# ONE Engine Numeric Round (T9)

> ONE Engine Numeric Round (T9) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.018/call, status unknown (last checked 2026-10-02).

Rounds an array of up to 1000 numeric values with optional scaling, offsetting, digit precision, and clamping to min/max bounds.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/numeric/round/t9?utm_source=zero.xyz
- Price: $0.018/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-numeric-round-t9-93d23cae
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_99yn1EIpRN6CbaSzDxyv-

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-numeric-round-t9-93d23cae -d '<json body>'
```

Example prompt: Round this list of numbers to 2 decimal places and clamp them between 0 and 100: [3.14159, 99.999, -5.7, 42.0001, 0.005].

## When to prefer this

Choose this endpoint when you need to batch-round, clamp, scale, or offset an array of numbers in a single pay-per-call API call without running local computation — especially useful in autonomous agent workflows on Base/x402 where serverless numeric transforms are needed at low cost ($0.018 USDC per call).

## Known failure modes

- Input array exceeds 1000 elements — request rejected
- Non-finite numbers (NaN, Infinity) in values array cause errors
- Invalid digit precision (negative or non-integer) may cause unexpected output
- min greater than max causes undefined clamping behavior
- Payment failure via x402 returns HTTP 402 before processing

## How this service works

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

## Output

Returns an object containing the transformed array of numbers after rounding, optional scaling, offsetting, and clamping have been applied according to the input parameters.

## 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-numeric-round-t9-93d23cae/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)