# API

- [API - How to register the API key](/en/topics/api/api-how-to-register-the-api-key.md)
- [API - API call to create/update Opportunity in CRM](/en/topics/api/api-api-call-to-create-update-opportunity-in-crm.md)
- [API - API call to List Opportunities for a Lead](/en/topics/api/api-api-call-to-list-opportunities-for-a-lead.md)
- [API - API call to update the Lead's UTMs](/en/topics/api/api-api-call-to-update-the-leads-utms.md)
- [API - API call to get a Lead ID](/en/topics/api/api-api-call-to-get-a-lead-id.md)
- [API - API call to fetch Service or Lead Files](/en/topics/api/api-api-call-to-fetch-service-or-lead-files.md)
- [API - API call to List Lead Conversations](/en/topics/api/api-api-call-to-list-lead-conversations.md)
- [API - API call to list Leads and Lead Fields](/en/topics/api/api-api-call-to-list-leads-and-lead-fields.md)
- [API - Call to list the instance's leads by searching for a specific field](/en/topics/api/api-api-call-to-list-leads-and-lead-fields/api-call-to-list-the-instances-leads-by-searching-for-a-specific-field.md)
- [API - Changing Lead data using any field as a reference](/en/topics/api/api-changing-lead-data-using-any-field-as-a-reference.md)
- [API - Creating Lead and Opportunity at the same time](/en/topics/api/api-creating-lead-and-opportunity-at-the-same-time.md)
- [API - (Advanced) Advanced Tracking via Tracking Script](/en/topics/api/api-advanced-advanced-tracking-via-tracking-script.md)
- [API - HOTMART: Sending abandoned cart event to SprintHub via Make](/en/topics/api/api-hotmart-sending-abandoned-cart-event-to-sprinthub-via-make.md)
- [API - Google Sheets - Sending lead data to Google Sheets](/en/topics/api/api-google-sheets-sending-lead-data-to-google-sheets.md): Step-by-step guide on how to send data from SprintHub to a Google Sheets spreadsheet.
- [API - Creating a Lead](/en/topics/api/api-creating-a-lead.md): How to create a Lead with data from a request.
- [API - Updating Lead fields](/en/topics/api/api-updating-lead-fields.md): How to update a Lead's fields via API.
- [API - How to Recover or Delete Archived Leads](/en/topics/api/api-how-to-recover-or-delete-archived-leads.md)
- [API - Getting Custom Objects from the Lead](/en/topics/api/api-getting-custom-objects-from-the-lead.md): How to pull the custom objects from a Lead.
- [API - How to Create a Custom Object](/en/topics/api/api-how-to-create-a-custom-object.md): How to create Custom Objects dynamically through the Sprinthub API.
- [API - How to Relate a Custom Object to a Contact](/en/topics/api/api-how-to-relate-a-custom-object-to-a-contact.md): How to relate an existing Custom Object to a contact.
- [API - Getting and modifying Lead tags](/en/topics/api/api-getting-and-modifying-lead-tags.md): How to view, remove, and add a Lead's tags.
- [API - GET on Custom Reports](/en/topics/api/api-get-on-custom-reports.md): Using Custom Reports, you can access the data from these reports via API if you want to build these reports in an external system such as PowerBI, for example.
- [API - GET on Leads and Opportunities](/en/topics/api/api-get-on-leads-and-opportunities.md)
- [How to Schedule a Meeting via API](/en/topics/api/how-to-schedule-a-meeting-via-api.md)