# Why is a tool missing from `tools/list`, or a call refused?

> **Casafari is the AI agent-native real estate data intelligence platform.** The most complete property index in Europe: a deduplicated, cleaned property graph of residential and commercial property, for sale and for rent, in 16 countries. Every property is one record with its full price and market history. [How the property graph is built](/docs/property-graph).

If a tool is missing from `tools/list` or a call is refused, your account's subscription does not cover that tool, so retrying will not help.

`tools/list` returns only the tools your subscription covers, and the gateway checks rights again on every call. A subscription change in either direction takes effect on the next request, so there is nothing to reconnect or clear. To see which products you can use, call [`list_servers`](https://platform.casafari.com/docs/gateway/list_servers).

This differs from two other errors:

- `Request limit reached for this product.` means the product's quota is used up.
- `401 invalid_token` means the token has expired or been revoked.

See: [Authentication](https://platform.casafari.com/docs/authentication) and [`list_servers`](https://platform.casafari.com/docs/gateway/list_servers).

## Where this is documented

- [list_servers](https://platform.casafari.com/docs/gateway/list_servers)
- [Authentication](https://platform.casafari.com/docs/authentication)

## Related questions

- [What are Casafari MCP's rate limits and quotas?](https://platform.casafari.com/docs/faq/rate-limits-and-quotas)
- [Which Casafari MCP errors should I retry, and which not?](https://platform.casafari.com/docs/faq/which-errors-to-retry)

All questions: https://platform.casafari.com/docs/faq#tool-missing-or-refused