> For the complete documentation index, see [llms.txt](https://doc.duaer.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.duaer.com/integrations/builtin/app-nodes/duaer-nodes-wecom.wecomoffice.md).

# WeCom Office

Use the WeCom Office node in Duaer for approval, calendar, meetings, docs, WeDrive, and related office APIs. You need a WeCom API credential.
## Call an office API

1. Prepare a WeCom API credential. Refer to [WeCom credentials](/integrations/builtin/credentials/wecom.md).
2. Add 企业微信(WeCom)-办公 and select the credential.
3. Pick a resource and operation (for example approval or calendar), fill the fields, and execute.

For messages and contacts, see [WeCom Base](/integrations/builtin/app-nodes/duaer-nodes-wecom.wecombase.md).
## Questions

### When do I use Office vs Base?

Use Base for messages, contacts, and media. Use Office for approval, calendar, docs, meetings, and similar.