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build-simulation

Official

Turn OpenAPI specs into a stateful API simulator.

Software Engineering#testing#openapi#stateful#mock-server#api-simulation#scenario-scripts
Authorcounterfact
Version1.0.0
Installs0

System Documentation

What problem does it solve?

Build-Simulation helps AI agents generate a complete, stateful API simulation from a bare OpenAPI spec, including scaffold creation, real-behavior research, context implementation, tests, and startup scenario setup.

Core Features & Use Cases

  • Generate a runnable scaffold (routes/ and types/) from an OpenAPI document and produce ready-to-run mock endpoints
  • Research the real API to seed realistic stateful behavior and guide context design and validation
  • Configure startup and scenario scripts so the mock server is immediately useful without manual setup

Quick Start

Run Counterfact against your OpenAPI spec to generate a ready-to-use, stateful mock API in an output directory.

Dependency Matrix

Required Modules

None required

Components

Standard package

💻 Claude Code Installation

Recommended: Let Claude install automatically. Simply copy and paste the text below to Claude Code.

Please help me install this Skill:
Name: build-simulation
Download link: https://github.com/counterfact/api-simulator/archive/main.zip#build-simulation

Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
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