What kind of errors can this skill detect?

It identifies missing operation IDs, invalid schema references, missing response definitions, and duplicate identifiers that could cause issues in production.

Can I use this for very large OpenAPI files?

Yes, the skill includes optimized commands that pipe output to grep or tail, making it easier for Claude to process results without exceeding context limits.

How does this skill help with API development?

It uses the Speakeasy CLI to scan your OpenAPI files for errors that might break SDK generation, ensuring your API contracts are robust and standardized.

Do I need the Speakeasy CLI installed?

Yes, this skill functions as an interface for the 'speakeasy lint' command, so having the Speakeasy CLI installed in your environment is required.

OpenAPI Spec Validator

Name: OpenAPI Spec Validator
Author: speakeasy-api

byspeakeasy-api

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378

API Development

Validates OpenAPI specifications using Speakeasy to ensure contract compliance and high-quality SDK generation.

About

This skill integrates Speakeasy's powerful linting engine into Claude's workflow, allowing developers to automatically detect and resolve issues within their OpenAPI definitions. It streamlines the API development process by identifying critical errors that block SDK generation, surface warnings for potential runtime issues, and providing hints for industry best practices. Whether you are debugging broken references or preparing a contract for production, this skill ensures your API documentation is accurate, type-safe, and ready for downstream automation.

Key Features

378 GitHub stars
Identification of SDK-blocking errors and performance warnings
Detection of missing or duplicate operation IDs
Automated OpenAPI linting and schema validation
AI-optimized output filtering for large specification files
Validation of complex $ref paths and response schemas

Use Cases

Debugging broken references and schema inconsistencies in large YAML files
Ensuring API design consistency and best practices during the development lifecycle
Validating API contracts before generating client SDKs or Terraform providers

About

Key Features

378 GitHub stars
Identification of SDK-blocking errors and performance warnings
Detection of missing or duplicate operation IDs
Automated OpenAPI linting and schema validation
AI-optimized output filtering for large specification files
Validation of complex $ref paths and response schemas

Use Cases

Debugging broken references and schema inconsistencies in large YAML files
Ensuring API design consistency and best practices during the development lifecycle
Validating API contracts before generating client SDKs or Terraform providers