# ONE Engine: Return First N Numeric Fields (JSON Object, N=32, Tier 2)

> ONE Engine: Return First N Numeric Fields (JSON Object, N=32, Tier 2) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0016/call, status unknown (last checked 2026-11-02).

Extracts and returns the first 32 numeric fields from a JSON object, with Tier 2 progressive diagnostics.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v11/record-process/number-fields/p9/t2?utm_source=zero.xyz
- Price: $0.0016/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/one-engine-return-first-n-numeric-fields-json-object-n-32-tier-2-576174d6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hi75VexymOxXyiS0pFlym

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-return-first-n-numeric-fields-json-object-n-32-tier-2-576174d6 -d '<json body>'
```

Example prompt: I have a JSON object with lots of mixed fields — can you extract just the first 32 numeric fields from it and return them with basic diagnostics?

## When to prefer this

Choose this endpoint when you need a deterministic, low-cost extraction of numeric fields from a JSON object without writing custom parsing logic, especially within an autonomous agent workflow that requires consistent behavior. Prefer this over general-purpose JSON parsers when you want a pay-per-call microservice with built-in diagnostics and predictable output format. Tier 2 is appropriate when basic diagnostics are sufficient and cost minimization matters.

## Known failure modes

- Non-JSON body returns parse error
- JSON with no numeric fields returns empty result set
- Malformed or deeply nested JSON may yield unexpected field traversal order
- Missing or invalid Content-Type header may cause rejection
- Exceeding payload size limits returns error

## How this service works

Deterministic JSON object processing utility: Return first N numeric fields; parameter=32. Tier 2/10 provides progressively richer diagnostics.

## Output

Returns the first 32 numeric fields found in the submitted JSON object, including field names and their numeric values, along with Tier 2 progressive diagnostics providing moderate depth of processing metadata.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-return-first-n-numeric-fields-json-object-n-32-tier-2-576174d6/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)