# Confluent Schema Registry

**Canonical:** https://apis.io/providers/confluent-schema-registry/  
**Website:** https://www.confluent.io/  
**APIs profiled:** 5

Confluent Schema Registry is the open-source serving layer for schema metadata used in Apache Kafka data pipelines. It exposes a RESTful interface for storing and retrieving Avro, JSON Schema, and Protobuf schemas, manages schema evolution through configurable compatibility rules (BACKWARD, FORWARD, FULL, and transitive variants), supports schema references and contexts, and integrates with Kafka producers and consumers via shipped serializers and deserializers. Schema Registry is distributed under the Confluent Community License and is a core component of both Confluent Platform and Confluent Cloud.

## Kin Score — 35.9 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 35.9).

| Facet | Score |
|---|---|
| Discoverability | 72.2 |
| Contract Quality | 51.6 |
| Governance | 9.8 |
| Contract Governance | 9.8 |
| Operational Transparency | 13.2 |
| Developer Ergonomics | 38.1 |
| Commercial Clarity | 26.3 |
| Access Clarity | 26.3 |

## Agent readiness — 31.6 (agent-aware)

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

## Access

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

## APIs (5)

- **Confluent Schema Registry Compatibility API** — The Compatibility API from Confluent Schema Registry — 3 operation(s) for compatibility.
- **Confluent Schema Registry Mode API** — The Mode API from Confluent Schema Registry — 1 operation(s) for mode.
- **Confluent Schema Registry Schemas API** — The Schemas API from Confluent Schema Registry — 3 operation(s) for schemas.
- **Confluent Schema Registry Server API** — The Server API from Confluent Schema Registry — 1 operation(s) for server.
- **Confluent Schema Registry Subjects API** — The Subjects API from Confluent Schema Registry — 6 operation(s) for subjects.

## Agentic access (1)

- **Confluent Schema Registry Agentic Access** — 21 operations · 9 acting

## Security (2)

- **Confluent Schema Registry Domain Security** — TLSv1.3 · HSTS · DMARC
- **Confluent Schema Registry Vulnerability Disclosure** — security.txt · contact published

## Plans (1)

- **Confluent Schema Registry Plans Pricing**

## Tags

Apache Kafka, Avro, Compatibility, Confluent, Data Governance, Data Streaming, JSON-Schema, Open-Source, Protobuf, REST, Schema Evolution, Schema Registry

---

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