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Api Designer

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404kidwiz·vlatest·backend

Provides API guidance and assistance for developing backend services and APIs.

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This skill no longer installs under the name api-designer. 404kidwiz/claude-supercode-skills is deleted or private, so it cannot be installed from.

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404kidwiz

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About this skill

The api-designer skill enables AI agents to generate, validate, and document API specifications using industry-standard formats like OpenAPI (Swagger) and JSON Schema. It streamlines backend development by automating the creation of robust contract definitions from natural language descriptions or code snippets.

When to use it

  • Rapidly prototype RESTful services without writing boilerplate documentation manually.
  • Validate existing API endpoints against strict schema constraints before deployment.
  • Generate client SDKs or frontend integration guides directly from backend specifications.
  • Collaborate with non-technical stakeholders by converting complex API logic into readable docs.

Key capabilities

  • Generates OpenAPI 3.x and Swagger JSON/YAML files on demand.
  • Creates JSON Schema definitions for request/response payloads.
  • Converts natural language requirements into structured API contracts.
  • Validates endpoint definitions against best practices and syntax rules.

Example prompts

  • "Create an OpenAPI specification for a user authentication service with login, logout, and profile update endpoints."
  • "Generate a JSON Schema for a product inventory API that includes fields for SKU, price, stock level, and category."
  • "Document the error handling strategies for a payment processing API in Swagger format."

Tips & gotchas

Ensure your AI agent has access to relevant domain knowledge when describing complex business logic, as the tool relies on accurate input to produce valid schemas. While it excels at generating standard formats, manual review is still recommended for security-sensitive endpoints or highly custom validation rules not covered by default templates.