# clonecho Near-Earth Asteroids

> clonecho Near-Earth Asteroids is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Returns a list of asteroids making close approaches to Earth on a given date, including size, velocity, miss distance, and hazard classification.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/near-earth-asteroids
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/clonecho-near-earth-asteroids-81c027db
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dtOOwgPD6cIoiMJ3OOqe0

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 clonecho-near-earth-asteroids-81c027db -d '<json body>'
```

Example prompt: Can you pull up all the asteroids making close approaches to Earth on July 4th 2025 — I want to see their sizes, velocities, miss distances, and whether any of them are flagged as potentially hazardous?

## When to prefer this

Use this endpoint when you need structured, per-date data on asteroid close approaches including hazard flags and physical characteristics. Prefer this over general astronomy APIs when you specifically need near-Earth object flyby data with safety/hazard classification on a particular calendar date.

## Known failure modes

- Missing or invalid date parameter returns an error or empty result
- Date format not matching YYYY-MM-DD causes a parse error
- No asteroids recorded for the given date returns an empty array
- Network or upstream NASA API unavailability causes a 5xx error
- Payment failure (x402) if USDC is not provided correctly

## How this service works

SCIENCE: asteroids making close approaches to Earth (size, velocity, miss distance, hazard flag). ?date. Returns JSON.

## Output

A JSON array of near-Earth asteroid close-approach records for the requested date, each including the asteroid's name, estimated diameter/size, relative velocity, miss distance from Earth, and a boolean hazard flag indicating whether it is classified as potentially hazardous.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/clonecho-near-earth-asteroids-81c027db/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from clonecho.builda.company](https://www.zero.xyz/host/clonecho.builda.company/llms.txt)