# Natur Biodiversity Density Assessment

> Natur Biodiversity Density Assessment is a paid API for AI agents from natur.halowerk.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-14).

Assesses recorded biodiversity around a geographic point, returning species count, record count, data recency, dataset count, and kingdom-level breakdown while flagging the observer-density caveat.

## Facts

- Endpoint: POST https://natur.halowerk.com/v1/biodiversity-density
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/natur-biodiversity-density-assessment-7a248022
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8TiTiUQ00FZykbAZHhpK8

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 natur-biodiversity-density-assessment-7a248022 -d '<json body>'
```

Example prompt: Can you assess the recorded biodiversity within 10 km of latitude 47.6062, longitude -122.3321 — I need to know how many distinct species have been documented, how many records back them up, how recent those records are, how many datasets contributed, and the breakdown by kingdom?

## When to prefer this

Choose this endpoint when you need a quantitative summary of recorded biodiversity around a specific geographic point, including kingdom-level breakdown and dataset provenance. It is purpose-built for ecological assessments, conservation pre-screening, and environmental impact reviews where the observer-density caveat matters. Prefer this over generic species lookup endpoints when you need aggregated density metrics rather than individual taxon records.

## Known failure modes

- Coordinates outside any coverage area return zero or sparse results with no error — agent must interpret low counts critically
- Very large radii may time out or return aggregated results that mask local variation
- Record density skewed by urban observer concentration may mislead richness comparisons without the caveat flag
- Invalid coordinate ranges (latitude outside ±90, longitude outside ±180) return validation errors
- No records available for extremely remote or data-poor regions

## How this service works

Assesses the recorded biodiversity of an area around a point: how many distinct species appear, how many records support them, how recent those records are, how many separate datasets contributed, and the breakdown by kingdom. The trap this service is built around is that record density measures observers, not organisms — a city park with heavy footfall carries more records than a roadless reserve and is not thereby richer.

## Output

Returns the number of distinct species recorded, total observation records, recency of those records, count of contributing datasets, and a breakdown of records by biological kingdom (e.g. Animalia, Plantae, Fungi), along with contextual notes about observer density vs. true ecological richness.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "lat": {
   "type": "number",
   "maximum": 90,
   "minimum": -90
  },
  "lon": {
   "type": "number",
   "maximum": 180,
   "minimum": -180
  },
  "kingdom": {
   "type": "string",
   "maxLength": 40,
   "description": "Restrict to one kingdom, e.g. Animalia, Plantae, Fungi."
  },
  "radius_km": {
   "type": "number",
   "default": 10,
   "maximum": 100,
   "minimum": 1
  },
  "years_back": {
   "type": "integer",
   "default": 20,
   "maximum": 100,
   "minimum": 1
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/natur-biodiversity-density-assessment-7a248022/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from natur.halowerk.com](https://www.zero.xyz/host/natur.halowerk.com/llms.txt)