Works with the AI Agents you already use

    Claude CodeClaude CodeCursorCursorCodex CLICodex CLIDeepSeekDeepSeekMuseMuse+22 more

    API Architect (Persona)

    1

    Acts as an API design lead for developers who want stable contracts and consistent error handling. Includes the persona plus 4 skills: api review checklist, contract writer, endpoint designer, versioning policy.

    $39

    Secure checkout via Stripe

    Money-back guarantee

    Converts to your local currency at checkout

    Security scanned
    API Architect (Persona)

    API Architect (Persona)

    Example session with this skill installed

    I want to add a POST endpoint to update a user's profile. Here is my current schema: {id: int, name: string, email: string, last_login: timestamp}.

    • Read your context and instructions
    • Compiled the api architect persona

    What does the caller's code look like? If they only want to update the email, sending the full object is wasteful.

    Proposed: PATCH /v1/users/{id}
    Request: {"email": "new@example.com"}
    Idempotency: Supported via Idempotency-Key header.
    Breaking: No.

    Connects securely to your tools. The creator never sees your data.

    About this skill

    Acts as an API design lead for developers who want stable contracts and consistent error handling.

    What is inside

    The persona plus 4 skills.

    • api review checklist
    • contract writer
    • endpoint designer
    • versioning policy

    Use cases

    • Reviewing existing API specs for consistency and potential breaking changes.
    • Designing new endpoints by sketching the consumer's calling code first.
    • Standardizing error response shapes across a microservices architecture.
    • Auditing endpoints for safe retry behavior and idempotency.

    Known limitations

    Does not handle server-side implementation, capacity planning, or legal review of terms of service.

    Free starter: API Architect (Free Starter)

    Find more skills like this on the Claude Skills Marketplace, the Codex Skills Marketplace and the Gemini Skills Marketplace, or browse Claude Skills for APIs & Backend.

    Does not implement server internals, manage infrastructure capacity, or provide legal review for API terms of service. Requires existing conventions to be provided for consistency checks.

    How to use

    1. 1

      Connect your agent to the Agensi MCP

      Copy the prompt and paste it into Claude, ChatGPT, Cursor or any agent that supports MCP. It sets up the connection for you. Manual setup

    2. 2

      Sign in to Agensi

      Your agent shows a sign-in link. Sign in and click Allow.

    3. 3

      Ask for what you need

      Your agent loads this skill and uses it on your task. It always asks before buying a skill.

    Reviews

    No reviews yet

    Be one of the first to try it. Every listed skill goes through the trust checks below.

    Security scanned

    Checked by our 8-point scan before listing

    Fresh listing

    Recently published to Agensi

    Money-back guarantee

    Doesn't do what its page promises? You get your money back.

    Trust & safety

    Security scan

    Security scan passed 3 months ago

    Permissions

    No special permissions declared or detected

    Listed3 months ago
    Updated5 days ago

    What's inside

    Frequently Asked Questions

    The API Architect Persona acts as a specialized design reviewer that prioritizes consumer ergonomics and contract stability, preventing database-driven design leaks and inconsistent error handling common in standard API development.

    This skill is highly versatile and works with OpenAPI (Swagger), GraphQL, gRPC, and REST specifications, focusing on architectural principles rather than specific programming language implementations.

    A persona and 4 skills, each a plain SKILL.md file: api review checklist, contract writer, endpoint designer, versioning policy. The package has no scripts, templates or separate guides.

    While it excels at drafting contracts and standardizing error shapes, it does not provide server-side code implementation, infrastructure scaling advice, or legal compliance reviews for Terms of Service.

    Yes, the skill is specifically designed to analyze proposed changes and categorize them as breaking or non-breaking, helping your team maintain strict versioning control and prevent accidental outages for consumers.

    Setup is instantaneous; once you import the skill into your AI agent platform, you can begin by providing a draft schema or simply describing a consumer use case to start the design process.

    New in APIs & Backend