> ## Documentation Index
> Fetch the complete documentation index at: https://docs.trychannel3.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Free Tier

The Channel3 MCP free tier is the quickest way to let an MCP-compatible agent search the catalog. Use this URL:

```text theme={null}
https://mcp.trychannel3.com/
```

No API key is required. Connect it with [MCP setup](/mcp/setup), then try a prompt:

```text theme={null}
Find in-stock merino wool sweaters under $150 and include buy links.
```

## When to add an API key

Use an API key for higher limits, pay-as-you-go usage, and attributed buy links:

```text theme={null}
https://mcp.trychannel3.com/?apiKey=<your-api-key>
```

Create an account, then copy a key from the [Dashboard](https://trychannel3.com/dashboard/api). See [Pricing](/pricing) for API costs and [Commissions](/faq/commissions) for monetization.