# ONE Engine JSON Object Last-Entries Extractor (Tier 8)

> ONE Engine JSON Object Last-Entries Extractor (Tier 8) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0087/call, status unknown (last checked 2026-10-25).

Returns the last N entries of a JSON object, with Tier 8 progressive diagnostics, using a fixed parameter of 32.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v9/record-process/last-entries/p9/t8?utm_source=zero.xyz
- Price: $0.0087/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-25
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/one-engine-json-object-last-entries-extractor-tier-8-6d6f7899
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gXAGINa9RhrsEx7YRDuky

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-json-object-last-entries-extractor-tier-8-6d6f7899 -d '<json body>'
```

Example prompt: Take this JSON object and give me just the last 32 entries from it — I only need the trailing key-value pairs, not the whole thing.

## When to prefer this

Choose this endpoint when you need a deterministic, low-cost utility to extract the last N entries from a JSON object and want richer diagnostic output (Tier 8). It is ideal for agents that need to slice tail data from large JSON objects without writing custom parsing logic, and where pay-per-call micro-pricing via x402 on Base is acceptable.

## Known failure modes

- Invalid or malformed JSON object in request body returns an error
- Empty JSON object may return empty result set
- Parameter mismatch or unsupported object structure may cause processing failure
- Payment not received or insufficient USDC balance causes 402 rejection
- Non-object JSON input (e.g. array or primitive) may not be supported

## How this service works

Deterministic JSON object processing utility: Return last object entries; parameter=32. Tier 8/10 provides progressively richer diagnostics.

## Output

A JSON response containing the last 32 entries (key-value pairs) of the submitted JSON object, along with Tier 8 progressive diagnostic information about the processing operation.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-json-object-last-entries-extractor-tier-8-6d6f7899/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)