Instantly create realistic mock API servers from OpenAPI specifications or examples to accelerate frontend and integration testing.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install sovereign-api-mock-generator
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install sovereign-api-mock-generator using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is API Mock Server Generator?
The API Mock Server Generator is a professional-grade tool within the Openclaw Skills ecosystem designed to streamline the development lifecycle. It allows developers to generate fully functional mock servers directly from OpenAPI specifications or raw endpoint examples. By utilizing this specific skill, teams can bypass the need for a finished backend, enabling frontend developers and testers to work against predictable, high-quality mock data that mirrors production environments.
This skill focuses on providing a realistic experience by incorporating configurable network delays and the ability to simulate various HTTP error states. Whether you are building a prototype or conducting complex integration tests, this Openclaw Skills utility ensures your workflow remains uninterrupted by backend dependencies or server availability.
API Mock Server Generator Use Cases
- Rapid frontend development when the backend API is still under construction or in a private environment.
- Load testing and performance benchmarking by simulating high-latency network conditions and response timeouts.
- QA testing of edge cases and error handling by intentionally triggering simulated 4xx and 5xx responses.
- Demonstrating client-side features to stakeholders using realistic, non-production data without sensitive information exposure.
How API Mock Server Generator Works
- Provide the skill with an OpenAPI (Swagger) definition file or a set of example API responses.
- The generator parses the definitions to identify endpoints, request parameters, and response schemas.
- A local mock server is instantiated based on the parsed data structure.
- Configure advanced behaviors such as response delays or specific error distributions to test resilience.
- Access the mock API via the generated local URL to begin testing and development within your environment.
API Mock Server Generator Setup
To integrate this into your workflow, ensure you have the core environment ready for Openclaw Skills. Run the following commands to get started:
# Install the mock generator skill
openclaw install api-mock-generator
# Initialize a mock server from a local specification
openclaw run api-mock-generator --spec ./openapi.yaml --port 8080
API Mock Server Generator Data Schema & Taxonomy
The skill organizes data by mapping OpenAPI definitions to internal routing logic. It manages metadata and response structures as follows:
| Attribute | Description |
|---|---|
| Endpoint | The URI path defined in the specification |
| Method | HTTP verb (GET, POST, PUT, DELETE, etc.) |
| Delay | Milliseconds of simulated latency for network testing |
| Schema | JSON Schema used for dynamic fake data generation |
API Mock Server Generator Advanced Features
- Dynamic data generation using integrated libraries for realistic user profiles, addresses, and timestamps.
- Support for multi-agent workflows to sync mock servers across distributed development environments.
- State persistence across mock requests to simulate basic CRUD operations and data consistency.
- Custom error simulation hooks to test how applications handle specific API failure modes.
SKILL.md
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