# clonecho Trend Detector

> clonecho Trend Detector is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-13).

Checks whether a given topic is currently trending by measuring velocity across Wikipedia, GitHub, and Hacker News, returning a JSON result.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/trend-detect
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/clonecho-trend-detector-d5a31c80
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3QfhMWq-KvlD8pDhNNs6n

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-trend-detector-d5a31c80 -d '<json body>'
```

Example prompt: Is 'WebAssembly' trending right now? Check its velocity across Wikipedia, GitHub, and Hacker News and tell me if it's gaining momentum.

## When to prefer this

Use this endpoint when you need a real-time, multi-source trend signal specifically from developer and knowledge communities (Wikipedia, GitHub, Hacker News). Prefer it over social media trend APIs when the target audience is technical users or researchers, and when you want velocity/momentum rather than raw popularity.

## Known failure modes

- Missing or empty ?topic= parameter — likely returns error or empty result
- Topic not found on any of the three sources — may return zero velocity or null scores
- Rate limiting or payment failure — 402 payment required if x402 header not provided
- Network timeout if upstream Wikipedia/GitHub/HN APIs are slow

## How this service works

TREND DETECTOR: is a topic trending right now (?topic=)? Velocity across Wikipedia + GitHub + Hacker News. Returns JSON.

## Output

A JSON object containing trend velocity metrics for the queried topic, aggregated across Wikipedia, GitHub, and Hacker News, indicating whether the topic is currently trending and how fast interest is growing.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/clonecho-trend-detector-d5a31c80/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)