# Customer.io Identify API

**Canonical:** https://apis.io/apis/customer-io/customer-io-identify-api/  
**Provider:** Customer.io — https://apis.io/providers/customer-io/  
**Base URL:** https://cdp.customer.io/v1  
**Documentation:** https://docs.customer.io/integrations/api/track/

Customer.io Identify API is one of 42 APIs that [Customer.io](https://apis.io/providers/customer-io/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Identify. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

Identify people and set their profile attributes. The identify call tells Customer.io who the current user is and assigns traits to them.

## Machine-readable artifacts (3)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/customer-io/refs/heads/main/openapi/customer-io-identify-api-openapi.yml
- **Documentation** — https://docs.customer.io/integrations/api/app/
- **Documentation** — https://docs.customer.io/integrations/data-in/connections/http-api/

## Other Customer.io APIs (12)

- [Customer.io Track API](https://apis.io/apis/customer-io/track-api/)
- [Customer.io Activities API](https://apis.io/apis/customer-io/customer-io-activities-api/)
- [Customer.io Alias API](https://apis.io/apis/customer-io/customer-io-alias-api/)
- [Customer.io Batch API](https://apis.io/apis/customer-io/customer-io-batch-api/)
- [Customer.io Broadcasts API](https://apis.io/apis/customer-io/customer-io-broadcasts-api/)
- [Customer.io Campaigns API](https://apis.io/apis/customer-io/customer-io-campaigns-api/)
- [Customer.io Collections API](https://apis.io/apis/customer-io/customer-io-collections-api/)
- [Customer.io Customers API](https://apis.io/apis/customer-io/customer-io-customers-api/)
- [Customer.io Exports API](https://apis.io/apis/customer-io/customer-io-exports-api/)
- [Customer.io Group API](https://apis.io/apis/customer-io/customer-io-group-api/)
- [Customer.io Messages API](https://apis.io/apis/customer-io/customer-io-messages-api/)
- [Customer.io Newsletters API](https://apis.io/apis/customer-io/customer-io-newsletters-api/)

## Tags

Identify

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/customer-io/customer-io-identify-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/customer-io/.