Comparison

Kafka Schema Registry vs DBHub

Kafka Schema Registry is an MCP server published by aywengo. Marketplaces we read that list it: 1 (Docker MCP Catalog). DBHub is an MCP server published by bytebase. Marketplaces we read that list it: 2 (Official MCP Registry, Community GitHub marketplaces). As of our marketplace pass on 2026-10-19. 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

Where each is published
Marketplace	Kafka Schema Registry	DBHub
Docker MCP Catalog	Listed Version: sha256:651147289d87 Forks (GitHub): 9 Stars (GitHub): 32 Not marked · First seen 2026-10-11	Not listed
Official MCP Registry	Not listed	Listed Version: 1.5.0 Downloads/month (npm): 178 238 Downloads/week (npm): 40 078 Forks (GitHub): 336 Stars (GitHub): 3 677 Not marked · First seen 2026-10-11

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

Kafka Schema Registry vs DBHub
Fact	Kafka Schema Registry	DBHub
Marketplaces that list it (differs)	1 (worse)	2 (better)
Stars (GitHub) (differs)	32 (worse)	3 677 (better)
Forks (GitHub) (differs)	9 (worse)	336 (better)
Last release	Not published	Not published
Where it runs (differs)	On your machine (aywengo/kafka-schema-reg-mcp:stable)	On your machine (@bytebase/dbhub)
Transport	stdio	stdio
Tools it declares (differs)	29	Not published
Environment variables it asks for (differs)	5, secrets among them: 2	17, secrets among them: 4
Parts of the bundle (differs)	Not a bundle	3
Licence	MIT	MIT
Repository (differs)	github.com/aywengo/kafka-schema-reg-mcp	github.com/bytebase/dbhub
Changes in the last 7 days (differs)	0	2
First seen	2026-10-11	2026-10-11

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

In its own words, on Docker MCP Catalog:

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.

DBHub

In its own words, on Official MCP Registry:

Token-efficient database MCP server for PostgreSQL, MySQL, MariaDB, SQL Server, Oracle, SQLite

How to run each

Kafka Schema Registry As a local MCP server: Docker image

Claude Code

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:stable

Requires: SCHEMA_REGISTRY_PASSWORD (secret), SCHEMA_REGISTRY_USER (secret)

DBHub As a local MCP server: npm package

Claude Code

claude mcp add --env "DB_PASSWORD=<YOUR_DB_PASSWORD>" --env "DSN=<YOUR_DSN>" --env "SSH_PASSPHRASE=<YOUR_SSH_PASSPHRASE>" --env "SSH_PASSWORD=<YOUR_SSH_PASSWORD>" --transport stdio dbhub -- npx -y @bytebase/dbhub

Requires: DB_PASSWORD (secret), DSN (secret), SSH_PASSPHRASE (secret), SSH_PASSWORD (secret)

Commands built only from what the marketplaces declare; the full set for every client is on each card.

Tools each declares

The marketplaces of DBHub 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_URL
SCHEMA_REGISTRY_USER (secret)
SLIM_MODE
VIEWONLY

Only DBHub asks for

DBHUB_DSN
DB_HOST
DB_NAME
DB_PASSWORD (secret)
DB_PORT
DB_TYPE
DB_USER
DSN (secret)
ID
PORT
SSH_AUTH_SOCK
SSH_HOST

Show the remaining 6

SSH_KEY
SSH_PASSPHRASE (secret)
SSH_PASSWORD (secret)
SSH_PORT
SSH_USER
TRANSPORT

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: DBHub · Compare two other plugins

Data comes from the Docker MCP Catalog (desktop.docker.com/mcp/catalog) and Docker Hub. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Data comes from public marketplace files in GitHub repositories of their authors. Figures come from our own regular passes over the marketplaces, last read on 2026-10-19. We publish no contact details for plugin publishers.