# ONE Engine Numeric Histogram Tier 8 — Equal-Width Bins with Rich Statistics

> ONE Engine Numeric Histogram Tier 8 — Equal-Width Bins with Rich Statistics is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-16).

Bins a numeric dataset into equal-width histogram intervals and returns 8 progressively richer statistical feature sets about the distribution.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/numeric/histogram/t8?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/one-engine-numeric-histogram-tier-8-equal-width-bins-with-rich-1945fa64
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_g8o7d8Anp_3QuT1ZRxGyL

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-histogram-tier-8-equal-width-bins-with-rich-1945fa64 -d '<json body>'
```

Example prompt: Can you bin these numbers into equal-width histogram buckets and give me the full statistical breakdown — counts per bin, bin edges, and as many distribution stats as possible: [12.3, 45.1, 7.8, 33.0, 22.5, 55.9, 41.2, 18.7, 29.4, 60.0]?

## When to prefer this

Choose this endpoint when you need both histogram bin counts AND rich multi-layer numeric statistics in a single call at low cost ($0.01 USDC). The Tier 8 bundle provides 8 output feature sets, making it ideal when you want more than just raw counts — covering distributional shape, central tendency, and spread in one response. Prefer over simpler histogram APIs when downstream analysis requires percentiles, skewness, or kurtosis alongside frequency data.

## Known failure modes

- Empty or null input array returns an error or empty histogram
- Non-numeric values in the array cause a validation or parsing error
- Insufficient data points to form meaningful bins may produce degenerate output
- Payment failure via x402 returns a 402 Payment Required response
- Malformed request body returns a 400 Bad Request
- Extreme outliers may produce very sparse bins with most counts at zero

## How this service works

Count values in equal-width histogram bins with progressively richer numeric statistics. Tier 8/10 standard bundle with 8 output feature sets.

## Output

Returns histogram bin edges, per-bin value counts, and up to 8 progressively richer numeric statistical feature sets characterizing the input distribution — including measures such as mean, median, variance, skewness, kurtosis, percentiles, and other distributional summaries depending on the tier.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-numeric-histogram-tier-8-equal-width-bins-with-rich-1945fa64/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)