mcp-kafka

mcp-kafka

A Model Context Protocol server for Apache Kafka. It lets an MCP-capable client (Claude Desktop, Claude Code, etc.) monitor and manage Kafka clusters — topics, partitions, configs, and consumer groups (including lag) — with behaviour controlled entirely by flags.

Safe by default: it starts read-only, can be scoped to an allowlist of topics, protects internal/critical topics from mutation, and gates destructive operations behind an explicit opt-in.

Features

• Monitoring — cluster/broker info, topic metadata and offsets, consumer groups, and per-partition + total consumer lag.
• Management — create topics, add partitions, alter topic configs, reset group offsets; delete topics/groups (admin).
• Access modes — read-only → read-write → admin, layered so a mode never exposes tools above its level.
• Security flags — topic allowlist, protected/internal topics, delete gating, dry-run, and JSON audit logging (see below).
• Auth — plaintext, TLS, and SASL (PLAIN / SCRAM-SHA-256 / SCRAM-SHA-512).

Security model

Concern	Flag	Default	Effect
What can the server do?	KAFKA_MODE	read-only	read-only exposes only monitoring; read-write adds management; admin adds deletes. Tools above the mode are never registered.
Which topics are in scope?	KAFKA_TOPIC_ALLOWLIST	(all)	When set, operations on other topics are refused.
Protect internal topics	KAFKA_PROTECT_INTERNAL_TOPICS	true	Topics starting with _ can be read but never mutated.
Protect specific topics	KAFKA_PROTECTED_TOPICS	(none)	Additional read-only-forever topics.
Can it delete?	KAFKA_ALLOW_DELETE	false	delete_topic / delete_consumer_group need this and admin mode.
Preview without touching the cluster	KAFKA_DRY_RUN	false	Write/admin tools validate + log intent, then return.
Audit trail	KAFKA_AUDIT_LOG	true	Emits a JSON line to stderr per guarded operation.
Interactive confirmation	(automatic)	—	Destructive & high-impact actions prompt the human to approve via MCP elicitation before running; clients without elicitation fall back to the *_ALLOW_* gate.

Tools

Read (read-only+): cluster_info, list_topics, describe_topic, topic_offsets, list_consumer_groups, describe_consumer_group (with lag)

Write (read-write+): create_topic, create_partitions, alter_topic_config, reset_consumer_group_offsets

Admin (admin): delete_topic, delete_consumer_group (both need KAFKA_ALLOW_DELETE)

Quickstart — add to your agent

Published on npm as @dockndevai/mcp-kafka. No clone or build needed — your MCP client runs it on demand with npx. Start in read-only mode; see .env.example for every variable and docs/CLIENTS.md for the full per-client guide.

Claude Code (CLI)

claude mcp add kafka -e KAFKA_BROKERS="localhost:9092" -e KAFKA_MODE="read-only" -- npx -y @dockndevai/mcp-kafka

Claude Desktop · Cursor · Windsurf — same block in claude_desktop_config.json, .cursor/mcp.json, or ~/.codeium/windsurf/mcp_config.json:

{
  "mcpServers": {
    "kafka": {
      "command": "npx",
      "args": [
        "-y",
        "@dockndevai/mcp-kafka"
      ],
      "env": {
        "KAFKA_BROKERS": "localhost:9092",
        "KAFKA_MODE": "read-only"
      }
    }
  }
}

OpenAI Codex CLI — in ~/.codex/config.toml:

[mcp_servers.kafka]
command = "npx"
args = ["-y", "@dockndevai/mcp-kafka"]
env = { KAFKA_BROKERS = "localhost:9092", KAFKA_MODE = "read-only" }

VS Code (GitHub Copilot, Agent mode) — in .vscode/mcp.json:

{
  "servers": {
    "kafka": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@dockndevai/mcp-kafka"
      ],
      "env": {
        "KAFKA_BROKERS": "localhost:9092",
        "KAFKA_MODE": "read-only"
      }
    }
  }
}

Example prompts

• "Which consumer groups have the most lag right now?"
• "Describe the orders topic and show its offsets."
• "Create a topic events with 6 partitions and 7-day retention." (needs read-write)

Run from source (development)

Prefer the published package above. To run from a clone:

npm install
npm run build
node dist/index.js   # with the environment variables set

Develop

npm run dev
npm test
npm run typecheck

Publishing

This server ships a server.json for the official MCP registry and an mcpName for npm ownership validation. See PUBLISHING.md for publishing to npm and listing on the MCP registry, Smithery, Glama, Cursor, and PulseMCP.

License

MIT