Contract Testing Builder
Automatically generates contract test files from API specifications, ensuring compatibility between services.
Install on your platform
We auto-selected Claude Code based on this skill’s supported platforms.
Run in terminal (recommended)
claude mcp add contract-testing-builder npx -- -y @trustedskills/contract-testing-builder
Or manually add to ~/.claude/settings.json
{
"mcpServers": {
"contract-testing-builder": {
"command": "npx",
"args": [
"-y",
"@trustedskills/contract-testing-builder"
]
}
}
}Requires Claude Code (claude CLI). Run claude --version to verify your install.
About This Skill
What it does
The contract-testing-builder skill generates contract tests based on provided API specifications. It can create tests in Pact or OpenAPI formats, ensuring compatibility and reliability between services. This allows for automated verification of API interactions and reduces integration issues.
When to use it
- API Integration Testing: Validate that a new microservice integrates correctly with an existing one by generating contract tests based on the existing service's API specification.
- Consumer-Driven Contracts: Create contracts from consumer applications, ensuring providers adhere to expected behavior.
- Automated Regression Testing: Generate and run contract tests as part of your CI/CD pipeline to catch breaking changes early.
- API Specification Updates: Automatically update existing contract tests when API specifications are modified.
Key capabilities
- Generates Pact-based contracts.
- Generates OpenAPI (Swagger) based contracts.
- Supports automated test generation.
Example prompts
- "Generate a Pact contract for the
/usersendpoint, given this API specification." - "Create an OpenAPI contract from this JSON schema describing my payment service's API."
- “Build a contract test suite for our order processing microservice using the provided API definition.”
Tips & gotchas
The quality of the generated tests depends heavily on the accuracy and completeness of the input API specification. Ensure your specifications are well-defined to achieve optimal results.
Tags
TrustedSkills Verification
Unlike other registries that point to live repositories, TrustedSkills pins every skill to a verified commit hash. This protects you from malicious updates — what you install today is exactly what was reviewed and verified.
Security Audits
| Gen Agent Trust Hub | Pass |
| Socket | Pass |
| Snyk | Pass |
🌐 Community
Passed automated security scans.