# JSR-303

**Canonical:** https://apis.io/providers/jsr-303/  
**Website:** https://jakarta.ee/specifications/bean-validation/  
**APIs profiled:** 1

JSR-303 (Bean Validation) is a Java specification that defines a metadata model and API for JavaBean validation. It provides a standard way to define validation constraints on Java objects using annotations, enabling developers to enforce business rules and data integrity at the object level. Now standardized as Jakarta Validation, with version 3.1 released for Jakarta EE 11 and version 4.0 under development for Jakarta EE 12.

## Kin Score — 12.5 / 100 (emerging)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 12.5).

| Facet | Score |
|---|---|
| Discoverability | 59.3 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 7.9 |
| Developer Ergonomics | 11.9 |
| Commercial Clarity | 15.8 |
| Access Clarity | 15.8 |

## Agent readiness — 2.5 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| 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 |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (1)

- **Jakarta Validation** — The Jakarta Validation specification (originally JSR-303, then JSR-349, JSR-380) for defining and enforcing validation constraints on Java objects. Provides object level constra...

## Security (1)

- **Jsr 303 Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Jsr 303 Plans Pricing**

## Tags

Annotations, Bean Validation, Java, JSR-303, Jakarta EE, Validation

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/jsr-303/). Scores are computed from the provider's own public artifacts under a published rubric.