# Act — CRM API: resources

> Canonical URL: https://developers.apideck.com/apis/crm/act/resources

## Supported resources

- **downstream name:** Companies
- **id:** companies
- **downstream id:** companies
- **custom field support:** true
- **name:** Companies
- **status:** live
- **custom field support:** true
- **id:** opportunities
- **name:** Opportunities
- **downstream name:** Opportunities
- **downstream id:** opportunities
- **status:** live
- **custom field support:** true
- **name:** Contacts
- **downstream name:** Contacts
- **downstream id:** contacts
- **status:** live
- **id:** contacts
- **downstream name:** Users
- **id:** users
- **name:** Users
- **status:** live
- **custom field support:** false
- **downstream id:** users
- **id:** activities
- **name:** Activities
- **downstream id:** history
- **downstream name:** History
- **status:** live
- **custom field support:** false

An omitted operation list does not establish operation support. Verify the selected operation in the coverage matrix.

[API reference](https://developers.apideck.com/apis/crm/reference.md) · [Coverage matrix](https://developers.apideck.com/apis/crm/coverage)