# Channel3 Category Search

> Channel3 Category Search is a paid API for AI agents from stableproduct.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Searches Channel3 product categories by free-text query, returning matching category results from the Wirecutter recommendation database.

## Facts

- Endpoint: GET https://stableproduct.dev/api/channel3/categories/search
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stableproduct-dev-6d0a180a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_v3u9Elz5GpVVQttQop_9n

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 stableproduct-dev-6d0a180a
```

Example prompt: Search Channel3 categories for 'coffee makers' and show me up to 10 matching categories so I know which one to use for product lookups.

## When to prefer this

Use this endpoint when you need to discover or search for Channel3 product categories by keyword or topic before drilling into brand or product details. Prefer this over listing all categories when you have a specific product type or domain in mind and want to quickly find the relevant category slug for further lookups.

## Known failure modes

- Missing required 'query' parameter returns a 422 validation error
- Query shorter than 1 character or longer than 200 characters is rejected
- limit outside range 1-20 returns a validation error
- Payment not included or invalid x402 payment results in 402 Payment Required
- No categories match the query, returning an empty result set
- Upstream Channel3 service unavailable causes a passthrough error

## How this service works

Search Channel3 categories by free-text query.

## Output

A list of Channel3 product categories matching the search query, including category names, slugs, and associated metadata. Optionally includes raw response data if include_raw is set to true.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "limit": 10,
   "query": "laptop"
  }
 }
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "properties": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stableproduct-dev-6d0a180a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stableproduct.dev](https://www.zero.xyz/host/stableproduct.dev/llms.txt)