# Channel3 Categories List

> Channel3 Categories List 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).

Returns a paginated list of all Channel3 product categories, optionally filtered to root-level categories only.

## Facts

- Endpoint: GET https://stableproduct.dev/api/channel3/categories/list
- 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-ee51d436
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9eHSP6NKdBHXirFN5FVMw

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-ee51d436
```

Example prompt: Show me the first page of Channel3 product categories — only root-level ones, 20 per page.

## When to prefer this

Use this endpoint when you need to enumerate or browse the full Channel3 category taxonomy, especially when building navigation trees, dropdowns, or discovering available product verticals. Prefer this over the search endpoint when you want a complete or paginated list rather than a filtered/keyword-driven subset. Use roots_only=true when building top-level navigation.

## Known failure modes

- Invalid page number (below 1) returns 422 validation error
- page_size exceeding 100 returns validation error
- Upstream Channel3 service unavailable returns 502 or passthrough error
- Invalid parameter types return schema validation errors
- Empty result set if no categories exist

## How this service works

List Channel3 categories with page pagination.

## Output

A paginated list of Channel3 category objects including category names, slugs, and hierarchy info, along with pagination metadata indicating total count and available pages.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "page": 1,
   "page_size": 20,
   "roots_only": true
  }
 }
}
```

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stableproduct-dev-ee51d436/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)