# Reference

> Every MCP tool, limit, token format, error code and the webhook request format, generated from the code.

Source: https://www.willo.ai/docs/reference

Every MCP tool, limit, token format, error code and the webhook request format, generated from the code.

## Reference

- [MCP tools](https://www.willo.ai/docs/reference/mcp-tools): Every tool on Willo's MCP server: what it does, its inputs, whether it reads or acts, and when it needs a person's approval.
- [Limits](https://www.willo.ai/docs/reference/limits): Rate limits for agent tokens and businesses, approval card lifetimes, and the caps on Agent Program email and webhook triggers.
- [Token format](https://www.willo.ai/docs/reference/tokens): The shape of a Willo agent token and webhook token, the scopes, the expiry choices and the pattern secret scanners match.
- [Error codes](https://www.willo.ai/docs/reference/errors): Every refusal code Willo's MCP server returns and every response a webhook trigger sends, with what each one means.
- [Webhook request format](https://www.willo.ai/docs/reference/webhook): How to call an Agent Program's webhook: the URL, content types, the X-Willo-Signature scheme, idempotency and responses.
- [What each plan includes](https://www.willo.ai/docs/reference/plans): Every plan on Willo's pricing page side by side, with its price, credits, businesses and features, read from the same source as that page.
- [Roles matrix](https://www.willo.ai/docs/reference/roles): Every role in Willo, viewer, editor, admin and owner, against the actions each one can take on a business and its organization.