Blog

Perspectives on AI-assisted development, mock infrastructure, and digital twins. Plus practical guides for mocking APIs across protocols.

Latest

Insights 8 min read

7 Protocols, 1 Binary, 0 Dependencies

HTTP, GraphQL, gRPC, WebSocket, MQTT, SSE, and SOAP from a single 43MB Go binary. No JVM, no Node, no Docker required. Here's why and how.

Zach Snell

March 7, 2026

Tutorials 8 min read

The MCP Mock Server: AI Agents That Create Their Own Test Doubles

18 MCP tools that let Claude, Cursor, and any AI assistant create, manage, and verify mock APIs without leaving the conversation.

March 7, 2026

Tutorials 7 min read

All for One, One for All: mockd Deployment Modes

One container or three. Same config, same mocks, same dashboard. Docker Compose files for both — copy, paste, done.

March 7, 2026

Insights 9 min read

The Mock Server Is the First Environment in Your Pipeline

Your deployment pipeline has staging and production. It's missing the environment where AI agents do 80% of the actual development work.

February 27, 2026

Insights 9 min read

Digital Twins, Not Mock Responses

The word "mock" undersells what AI development needs. You don't want a function that returns 200 OK. You want a local service replica that behaves like the real thing.

February 27, 2026

Insights 8 min read

Your AI Coding Agent Needs a Dev Environment Too

AI agents don't just write code. They develop, test, and iterate in tight loops. We gave them editors and terminals — but forgot to give them the services their code talks to.

February 27, 2026

Tutorials 7 min read

How to Mock a REST API in 30 Seconds

No code, no config files, no dependencies. Create a fully functional mock REST API with dynamic responses, custom headers, and realistic data in a single command.

February 27, 2026

Tutorials 7 min read

Mock a GraphQL Server for Testing — No Schema Required

Create a mock GraphQL server that handles queries, mutations, and variables. No code generation, no schema stitching, no Apollo Server boilerplate.

February 27, 2026

Tutorials 6 min read

Mock Server with SSE Streaming Support

Server-Sent Events are great for real-time features. Testing them is less great. Here's how to set up a mock SSE endpoint in under a minute.

February 26, 2026

Tutorials 7 min read

MQTT Mock Broker for IoT Testing

Testing MQTT clients usually means running Mosquitto or HiveMQ locally. Here's a mock broker that takes one command and supports topic patterns, QoS, and auto-publishing.

February 25, 2026

Tutorials 7 min read

WebSocket Mock Server for Testing — No Code Required

Setting up a WebSocket server for testing usually means writing one. Here's how to get a configurable mock running in under a minute.

February 24, 2026

Tutorials 6 min read

How to Mock a gRPC Server in 30 Seconds

Most gRPC mocking tutorials start with "first, install the protoc compiler." This one starts with a working server.

February 23, 2026

Tutorials 5 min read

How to Set Up mockd in GitHub Actions

A single GitHub Action step. No Docker containers, no JVM startup, no WireMock classpath configuration. Just a binary that starts in milliseconds.

March 2, 2026

Tutorials 6 min read

Stateful Mock APIs That Remember Things

Most mock servers return canned responses. mockd keeps state — create a user, and it actually exists. Delete it, and it's gone. One command to get a full CRUD API.

March 1, 2026

Tutorials 5 min read

From OpenAPI Spec to Mock Server in One Command

Import an OpenAPI spec and get a working mock server with realistic responses. No code generation, no middleware configuration, no runtime to install.

February 28, 2026