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WarpStream BYOC Schema Registry

warpstream.com

From $0.03/mo macOSLinuxAPISelf-hosted
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Spec score 7.3 #15 of 26 in Schema Registry Software

What it is

WarpStream BYOC Schema Registry stores and serves schemas for Kafka records through a REST server compatible with Confluent’s Schema Registry API. It supports Avro and protobuf, while WarpStream Agents validate records and can reject invalid data or emit metrics. The stateless, zero-disk registry stores schemas in the customer’s object storage, and WarpStream says they remain in that cloud account. Schema Linking migrates schemas from a Confluent-compatible registry while preserving IDs and compatibility rules. Authentication options include Basic Authentication, TLS and mutual TLS. Customers create a Schema Registry Virtual Cluster in the console or API, then deploy an agent using the Kafka Agents binary; agents emit logs and metrics. Each registry allows 100,000 schema versions and each schema 1 MB, with support-requested increases. Plans are Dev at $0.03 a month, Fundamentals at 0.17 USD, Pro at 0.52 USD, and Enterprise with no listed price. Cluster minutes use 15-minute billing intervals.

Spec sheet

Purpose
The BYOC Schema Registry stores and serves schemas used to serialize, deserialize, and validate Kafka records through a REST server compatible with Confluent's Schema Registry API.Read 3 Oct 2026 · docs.warpstream.com
Deployment
Customers can create a Schema Registry Virtual Cluster in the WarpStream console or through the API, and deploy its agent using the same binary as Kafka Agents.Read 3 Oct 2026 · docs.warpstream.com
Headquarters
Mountain View, California, United StatesRead 28 Sep 2026 · warpstream.com
Founded
2023Read 28 Sep 2026 · warpstream.com
API limitation
The registry supports most Confluent Schema Registry APIs but does not support advanced features such as data contracts and client-side field-level encryption.Read 3 Oct 2026 · docs.warpstream.com
Architecture
The stateless, zero-disk registry stores schemas in the customer's object store and embeds registry functionality in WarpStream Agents.Read 3 Oct 2026 · docs.warpstream.com
Authentication
The registry supports Basic Authentication, TLS encryption, and mutual TLS authentication.Read 3 Oct 2026 · docs.warpstream.com
Cloud data control
WarpStream says schemas are stored in the customer's cloud account and object storage buckets and never leave that account.Read 3 Oct 2026 · warpstream.com
Formats
It supports Avro and protobuf schemas.Read 3 Oct 2026 · docs.warpstream.com
Integration compatibility
Schema Validation supports Kafka-compatible registries such as Confluent Schema Registry and AWS Glue Schema Registry.Read 3 Oct 2026 · warpstream.com
Monitoring
Schema Registry Agents emit logs and metrics that customers can use to monitor them.Read 3 Oct 2026 · docs.warpstream.com
Schema limits
Each registry is limited to 100,000 schema versions and each schema is limited to 1 MB; WarpStream says customers can contact support to request increases.Read 3 Oct 2026 · docs.warpstream.com
Schema linking
Schema Linking migrates schemas from a Confluent-compatible registry while preserving schema IDs and compatibility rules.Read 3 Oct 2026 · warpstream.com
Schema validation
WarpStream Agents can validate that records conform to their schemas and reject or emit metrics for invalid records.Read 3 Oct 2026 · docs.warpstream.com

Plans and prices

Dev $0.03 a month Cluster minutes are billed in 15-minute increments for any 15-minute interval that the cluster receives requests. No uptime SLA Read 3 Oct 2026 · warpstream.com
Fundamentals $0.17 a month Cluster minutes are billed in 15-minute increments for any 15-minute interval that the cluster receives requests. 99.9% uptime SLA Read 3 Oct 2026 · warpstream.com
Pro $0.52 a month Cluster minutes are billed in 15-minute increments for any 15-minute interval that the cluster receives requests. 99.99% uptime SLA Read 3 Oct 2026 · warpstream.com
Enterprise Priced on request Cluster minutes are billed in 15-minute increments for any 15-minute interval that the cluster receives requests. 99.999% uptime SLA with Multi-Region Clusters; 99.99% without Read 3 Oct 2026 · warpstream.com

Every WarpStream BYOC Schema Registry plan and price →

Strong points and limits

Strong points

  • Customer-controlled object storage
  • Avro and protobuf support
  • Confluent API compatibility
  • TLS and mutual TLS authentication
  • Schema migration preserves IDs and rules

Limits

  • No free plan is listed
  • Advanced Confluent features are unsupported
  • Schemas are limited to 1 MB each

Who it suits

It suits teams running Kafka-compatible pipelines that need customer-account schema storage, validation and hybrid deployment.

Verdict

WarpStream’s registry emphasizes customer-account storage, Kafka compatibility and agent-based validation. Published lower-tier prices and explicit limits help planning, while unsupported advanced APIs may constrain some deployments.

Where Specifiction places it

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