# Rate Rounding Rules Tools

Tools for managing a workspace's named rate rounding rules. A rounding rule says which prices a derived product group
may charge: a step in whole major currency units, an ending (a fixed fraction such as .99, or one unit under each
multiple of the step) and a direction (down, up or nearest). A derived product group selects a rule with
`assign_product_group_rounding_rule` and drops it with `unassign_product_group_rounding_rule`.

## Available Tools

| Tool | Description |
| ---- | ----------- |
| [`list_rate_rounding_rules`](/mcp/tools/catalog/rate-rounding-rules/list_rate_rounding_rules/) | List a workspace's rate rounding rules, ordered by name, with cursor-based pagination |
| [`get_rate_rounding_rule`](/mcp/tools/catalog/rate-rounding-rules/get_rate_rounding_rule/) | Get one rate rounding rule by ID with its version, definition and usage |
| [`create_rate_rounding_rule`](/mcp/tools/catalog/rate-rounding-rules/create_rate_rounding_rule/) | Create a named rate rounding rule in a workspace |
| [`update_rate_rounding_rule`](/mcp/tools/catalog/rate-rounding-rules/update_rate_rounding_rule/) | Update the name and/or definition of a rate rounding rule using its current version |
| [`delete_rate_rounding_rule`](/mcp/tools/catalog/rate-rounding-rules/delete_rate_rounding_rule/) | Delete a rate rounding rule using its current version |

## Related Documentation

- [Catalog Tools Overview](/mcp/tools/catalog/) - All catalog-related tools
- [Product Groups Tools](/mcp/tools/catalog/product-groups/) - Selecting a rounding rule on a derived product group
- [Rate Rounding Rules Documentation](/catalog/rate-rounding-rules/) - Rate rounding rules domain
  documentation