> For the complete documentation index, see [llms.txt](https://docs.codemash.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.codemash.io/other-topics/tokens-binding/operation-based-tokens.md).

# Operation based tokens

The following are the tokens that need to be used in certain operations for them to succeed.

| Token           | Description                                                                                                                                                                                                                          |
| --------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| ValidationToken | Required for **user registration and invitation** templates to inject a token for account verification. Add "@Model.ValidationToken" to your email templates used for registration or invitation to get a validation token injected. |