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wtf is zilla?

aklivity/zilla — explained in plain English

Analysis updated 2026-08-13

1,046JavaAudience · developerComplexity · 4/5LicenseSetup · moderate

TL;DR

A multi-protocol gateway that connects apps, devices, and AI agents to Apache Kafka and other services through HTTP, MQTT, gRPC, and MCP.

Mindmap

mindmap
  root((Zilla))
    What it does
      Multi-protocol gateway
      Event Gateway
      MCP Gateway
    Tech stack
      Java
      Kafka
      Docker
    Use cases
      Expose Kafka streams
      Unified AI agent endpoint
      IoT bridging
    Audience
      Developers
      Platform engineers

Code map

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filefunction / class

Why would anyone build with this?

REASON 1

Expose Kafka and MQTT streams to web and mobile apps over HTTP or WebSocket.

REASON 2

Give an AI agent one unified MCP endpoint for multiple servers, APIs, and Kafka.

REASON 3

Bridge IoT devices using MQTT to a Kafka-based system of record.

REASON 4

Apply authentication, schema validation, and observability at the gateway layer.

What's in the stack?

JavaKafkaDocker

How it stacks up

aklivity/zillagetactivity/shapeviewelder-plinius/v3sp3r
Stars1,0461,0541,013
LanguageJavaJavaJava
Last pushed2026-05-01
MaintenanceMaintained
Setup difficultymoderateeasyhard
Complexity4/52/54/5
Audiencedeveloperdeveloperdeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you spin it up?

Difficulty · moderate Time to first run · 30min

Requires Docker Compose, ready-made example configs are included for both gateway paths.

Released under a custom Aklivity Community License rather than a standard open-source license, review the terms before commercial redistribution.

Wtf does this do

Zilla is a gateway server that sits between different types of applications, devices, and AI systems and helps them talk to each other and to a message streaming system called Apache Kafka, even when they do not natively speak the same protocol. For example, a web browser cannot talk to Kafka directly, and an AI agent might need to reach several different services, each with its own way of connecting, credentials, and data format. Zilla translates between these different protocols, including HTTP, MQTT, gRPC, and a newer protocol called MCP that AI agents use to discover and call tools. The tool provides two main capabilities. The first, called the Event Gateway, exposes Kafka and MQTT data streams to regular applications and devices using more familiar protocols like HTTP or WebSocket. The second, called the MCP Gateway, gives an AI agent one single, unified connection point that can reach multiple underlying MCP servers, existing HTTP APIs, and Kafka clusters, all organized under one catalog of available tools and capabilities. Both gateways are configured through a single settings file and share the same routing, security, and monitoring systems underneath. Zilla also handles authentication and authorization at the gateway level, meaning it can check who or what is making a request before forwarding it, validate and transform data formats like JSON, Avro, and Protobuf, and record detailed metrics about requests passing through it. It is designed to run efficiently with minimal added delay, keeping most of its internal processing stateless so it can scale across multiple instances. Getting started requires Docker Compose, and the project includes ready to run example setups for both the Event Gateway and MCP Gateway paths. It can also be installed directly through Docker or deployed to Kubernetes using a Helm chart. Zilla is released under the Aklivity Community License, a custom license with its own specific terms rather than a standard open-source license, and a separate paid edition called Zilla Plus adds enterprise features. This project is aimed at developers and platform engineers building event-driven systems or connecting AI agents to existing APIs and data streams.

Yoink these prompts

Prompt 1
Help me run Zilla's Event Gateway quickstart with Docker Compose.
Prompt 2
Explain how Zilla's MCP Gateway namespaces capabilities across providers.
Prompt 3
Show me how to configure zilla.yaml to expose a Kafka topic over REST.
Prompt 4
Walk me through deploying Zilla to Kubernetes with Helm.

Frequently asked questions

wtf is zilla?

A multi-protocol gateway that connects apps, devices, and AI agents to Apache Kafka and other services through HTTP, MQTT, gRPC, and MCP.

What language is zilla written in?

Mainly Java. The stack also includes Java, Kafka, Docker.

What license does zilla use?

Released under a custom Aklivity Community License rather than a standard open-source license, review the terms before commercial redistribution.

How hard is zilla to set up?

Setup difficulty is rated moderate, with roughly 30min to a first successful run.

Who is zilla for?

Mainly developer.

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