# Castor Participants API

**Canonical:** https://apis.io/apis/castoredc/castoredc-participants-api/  
**Provider:** Castor — https://apis.io/providers/castoredc/  
**Base URL:** https://data.castoredc.com/api  
**Documentation:** https://helpdesk.castoredc.com/hc/en-us/articles/27149233860509-Castor-EDC-CDMS-Application-Programming-Interface-API

Castor Participants API is one of 11 APIs that [Castor](https://apis.io/providers/castoredc/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Participants. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

Participants (records / subjects) enrolled in a study.

## Machine-readable artifacts (5)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/castoredc/refs/heads/main/openapi/castoredc-participants-api-openapi.yml
- **Documentation** — https://helpdesk.castoredc.com/hc/en-us/articles/27149233860509-Castor-EDC-CDMS-Application-Programming-Interface-API
- **APIReference** — https://data.castoredc.com/api
- **PostmanCollection** — https://raw.githubusercontent.com/api-evangelist/castoredc/refs/heads/main/collections/castoredc.postman_collection.json
- **OpenCollection** — https://raw.githubusercontent.com/api-evangelist/castoredc/refs/heads/main/collections/castoredc.opencollection.json

## Other Castor APIs (10)

- [Castor Audit Trail API](https://apis.io/apis/castoredc/castoredc-audit-trail-api/)
- [Castor Data Export API](https://apis.io/apis/castoredc/castoredc-data-export-api/)
- [Castor Fields API](https://apis.io/apis/castoredc/castoredc-fields-api/)
- [Castor Institutes API](https://apis.io/apis/castoredc/castoredc-institutes-api/)
- [Castor Metadata API](https://apis.io/apis/castoredc/castoredc-metadata-api/)
- [Castor Reports API](https://apis.io/apis/castoredc/castoredc-reports-api/)
- [Castor Studies API](https://apis.io/apis/castoredc/castoredc-studies-api/)
- [Castor Study Data Points API](https://apis.io/apis/castoredc/castoredc-study-data-points-api/)
- [Castor Surveys API](https://apis.io/apis/castoredc/castoredc-surveys-api/)
- [Castor Users API](https://apis.io/apis/castoredc/castoredc-users-api/)

## Tags

Participants

---

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