# ONE Engine Longest Words Text Analysis (Tier 5, N=16)

> ONE Engine Longest Words Text Analysis (Tier 5, N=16) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0034/call, status unknown (last checked 2026-11-02).

Analyzes the first 16 words of submitted text and returns the longest words found, with Tier 5 diagnostic enrichment.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v12/text-analysis/longest-words/p1/t5?utm_source=zero.xyz
- Price: $0.0034/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-longest-words-text-analysis-tier-5-n-16-22c00d87
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BjgnHhMmwlhnu_qK4toLR

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-longest-words-text-analysis-tier-5-n-16-22c00d87 -d '<json body>'
```

Example prompt: Analyze this paragraph and return the longest words from the first 16 words: 'The extraordinary circumstances surrounding the philosophical underpinnings of contemporary democratic institutions remain fundamentally misunderstood by many.'

## When to prefer this

Choose this endpoint when you need a deterministic, low-cost, reproducible extraction of the longest words from the opening portion (first 16 words) of a text, with moderate diagnostic detail (Tier 5). Prefer it over higher tiers when you don't need maximum diagnostic richness, and over lower tiers when you want more than minimal output. Ideal for agents performing quick vocabulary or readability assessments on text snippets at scale.

## Known failure modes

- Empty or whitespace-only text input returns no words or an error
- Text with fewer than 16 words processes only available words
- Non-Latin scripts or special characters may affect tokenization
- Payment failure via x402 returns 402 status before processing
- Malformed POST body returns 400 bad request

## How this service works

Deterministic local text analysis utility: Return longest words from first N words; parameter=16. Tier 5/10 provides progressively richer diagnostics.

## Output

Returns a list of the longest words extracted from the first 16 words of the submitted text, along with their lengths and Tier 5 diagnostic metadata such as processing details and enriched analysis output.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-longest-words-text-analysis-tier-5-n-16-22c00d87/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)