# Castor

**Canonical:** https://apis.io/providers/castoredc/  
**Website:** https://www.castoredc.com  
**APIs profiled:** 11

Castor (Castor EDC / CDMS) is a cloud electronic data capture (EDC) and clinical data management platform for clinical trials and real-world research. Its RESTful API at https://data.castoredc.com/api exposes study configuration and collected data - studies, participants (records), institutes (sites), users, fields and field metadata, study data points, repeating data (reports), surveys and survey packages, audit trail, and batch data export - authenticated with OAuth2 client-credentials. The API is used to integrate Castor with external systems, automate data entry and extraction, and support statistical analysis via the official R and Python wrapper packages.

## Kin Score — 39.3 / 100 (developing)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 39.3).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 52.9 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 31.6 |
| Developer Ergonomics | 14.3 |
| Commercial Clarity | 39.5 |
| Access Clarity | 39.5 |

Regulatory layer — **Health**: 43.8 (matched via tags).

## Agent readiness — 32.1 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | partial |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Paid · Self-serve signup — onboarding: self-serve, pricing: paid, trial: no (confidence: high).

## APIs (11)

- **Castor Audit Trail API** — Immutable audit trail of study changes.
- **Castor Data Export API** — Bulk export of study data, structure, and option groups.
- **Castor Fields API** — Study fields and their metadata (dependencies, option groups, validations).
- **Castor Institutes API** — Institutes (sites / centers) participating in a study.
- **Castor Metadata API** — Reference metadata such as countries.
- **Castor Participants API** — Participants (records / subjects) enrolled in a study.
- **Castor Reports API** — Reports / repeating data and their instances.
- **Castor Studies API** — Studies accessible to the API client.
- **Castor Study Data Points API** — Collected values for study forms.
- **Castor Surveys API** — Surveys, survey packages, and ePRO.
- **Castor Users API** — Users and study membership.

## Agentic access (1)

- **Castoredc Agentic Access** — 34 operations · 7 acting

## Security (3)

- **Castoredc Authentication** — oauth2 · 1 scheme
- **Castoredc Domain Security** — TLSv1.3 · HSTS · DMARC
- **Castoredc Vulnerability Disclosure** — security.txt · contact published

## Plans (1)

- **Castoredc Plans Pricing**

## Tags

Clinical Trials, Electronic Data Capture, EDC, Clinical Data Management, Healthcare, Life Sciences, Research

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/castoredc/). Scores are computed from the provider's own public artifacts under a published rubric.