Kafka Schema Registry vs cockroachdb
Kafka Schema Registry is an MCP server published by aywengo. Marketplaces we read that list it: 1 (Docker MCP Catalog). cockroachdb is a plugin bundle for AI coding tools published by cockroachdb. Marketplaces we read that list it: 4 (Claude Code: claude-plugins-official, Claude: knowledge-work-plugins, Community GitHub marketplaces, Claude Code: claude-plugins-community). As of our marketplace pass on 2026-10-15. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |   Kafka Schema Registry |  cockroachdb |
|---|---|---|
| Docker MCP Catalog | Listed Version: sha256:651147289d87 Forks (GitHub): 9 Stars (GitHub): 32 Not marked · First seen |
Not listed |
| Claude Code: claude-plugins-official | Not listed | Listed Version: 0.1.10 Forks (GitHub): 3 Stars (GitHub): 4 Not marked · First seen |
| Claude: knowledge-work-plugins | Not listed | Listed Version: 0.1.10 Forks (GitHub): 3 Stars (GitHub): 4 Not marked · First seen |
| Claude Code: claude-plugins-community | Not listed | Listed Version: 0.1.10 Forks (GitHub): 3 Stars (GitHub): 4 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | Kafka Schema Registry | cockroachdb |
|---|---|---|
| Marketplaces that list it (differs) | 1 (worse) | 4 (better) |
| Stars (GitHub) (differs) | 32 (better) | 4 (worse) |
| Forks (GitHub) (differs) | 9 (better) | 3 (worse) |
| Last release | Not published | Not published |
| Where it runs (differs) | On your machine (aywengo/kafka-schema-reg-mcp:stable) | Remote server (cockroachlabs.cloud/mcp) |
| Transport (differs) | stdio | Streamable HTTP |
| Tools it declares (differs) | 29 | Not published |
| Environment variables it asks for (differs) | 5, secrets among them: 2 | 6, secrets among them: 1 |
| Hooks it runs (differs) | Not published | 2 |
| Parts of the bundle (differs) | Not a bundle | 42 |
| Licence (differs) | MIT | Apache-2.0 |
| Repository (differs) | github.com/aywengo/kafka-schema-reg-mcp | github.com/cockroachdb/claude-plugin |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | not checked yet |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
Kafka Schema Registry
Comprehensive MCP server for Kafka Schema Registry operations. Features multi-registry support, schema contexts, migration tools, OAuth authentication, and 57+ tools for complete schema management. Supports SLIM_MODE for optimal performance.
cockroachdb
Connect Claude Code directly to your CockroachDB clusters for hands-on database work — explore schemas, write optimized SQL, debug queries, and manage distributed database clusters. This plugin provides 14 tools across two active MCP backends (self-hosted MCP Toolbox and managed CockroachDB Cloud MCP Server), three specialized agents (DBA, Developer, Operator), 32 skills across 6 operational domains, and built-in safety hooks.
How to run each
Kafka Schema Registry As a local MCP server: Docker image
claude mcp add --env "SCHEMA_REGISTRY_PASSWORD=<YOUR_SCHEMA_REGISTRY_PASSWORD>" --env "SCHEMA_REGISTRY_USER=<YOUR_SCHEMA_REGISTRY_USER>" --transport stdio kafka-schema-reg-mcp -- docker run -i --rm -e SCHEMA_REGISTRY_PASSWORD -e SCHEMA_REGISTRY_USER aywengo/kafka-schema-reg-mcp:stableRequires: SCHEMA_REGISTRY_PASSWORD (secret), SCHEMA_REGISTRY_USER (secret)
cockroachdb As a Claude Code plugin
/plugin install cockroachdb@claude-plugins-officialCommands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
The marketplaces of cockroachdb publish no list of tools, so we do not compare tools.
Settings each asks for
Only Kafka Schema Registry asks for
SCHEMA_REGISTRY_PASSWORD (secret)SCHEMA_REGISTRY_URLSCHEMA_REGISTRY_USER (secret)SLIM_MODEVIEWONLY
Only cockroachdb asks for
COCKROACHDB_DATABASECOCKROACHDB_HOSTCOCKROACHDB_PASSWORD (secret)COCKROACHDB_PORTCOCKROACHDB_SSLMODECOCKROACHDB_USER
Settings as each marketplace publishes them. Asking for fewer is not better in itself.
What it can do: Kafka Schema Registry · What it can do: cockroachdb · Compare two other plugins
Data comes from the Docker MCP Catalog (desktop.docker.com/mcp/catalog) and Docker Hub. Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-official/blob/HEAD/.claude-plugin/marketplace.json. Data comes from the public marketplace file https://github.com/anthropics/knowledge-work-plugins/blob/HEAD/.claude-plugin/marketplace.json. Data comes from public marketplace files in GitHub repositories of their authors. Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.