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Vinkius

API Design Prover Connector for AI agents.

1 live capability

Build production-grade REST APIs with consistent contracts and error handling.

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AI Agent

Why people use API Design Prover

API Design Prover: Stop AI from creating broken REST API contracts

This Connector changes the workflow by moving the quality check to the beginning. Instead of fixing code, you're validating a blueprint. By running your design through the prover first, you ensure the agent follows strict rules for pagination, error codes, and consistency. You get a production-ready plan that actually works with your frontend.

  • Claude
  • ChatGPT
  • Gemini
  • Cursor
  • Visual Studio Code
  • Windsurf

What Vinkius changes

You get a bulletproof API contract before you ever start coding.

Use it from Claude, ChatGPT, Cursor or another AI client you already have.

One account · 5,900+ Connectors

  1. Real-world use case 01

    Fixing Verb Abuse

    An agent suggests a GET request to delete a user.

  2. Real-world use case 02

    Preventing List Crashes

    The mobile team complains about slow loads.

  3. Real-world use case 03

    Standardizing Responses

    Stop the frontend from needing custom parsers for every route by forcing a consistent JSON envelope across the board.

Complete set · 1capability

The complete API Design Prover capability set.

These are the exact actions your AI can choose when you ask it to work with API Design Prover.

Capability set01 / 01

01

1 capability in this set.

Part of 1 available through API Design Prover.

  1. 01 Capability

    Validate api design

    Checks your entire API surface against industry standards like RFC 7807 and proper HTTP verb semantics. It gives you a verdict and specific coaching to fix design flaws.

Set up in minutes

One URL. Then ask API Design Prover to work.

Claude and ChatGPT only need the Connector URL. Copy it once, add it in settings, and use API Design Prover from the conversation.

Choose your client

Live preview
Advanced clients IDE · CLI

Claude · Web + desktop

Official guide ↗

Connector URL · ready to paste

Streamable HTTP
https://edge.vinkius.com/vk_preview_qg8XbvSmxEnaSpHzTf8C0mUG7OY2r5bZJfEFviZ0/mcp
  1. Step 01

    Open Connectors

    In Claude Web or Claude Desktop, open Settings and choose Connectors.

  2. Step 02

    Add the URL

    Choose Add custom connector, name it API Design Prover, and paste the URL above.

  3. Step 03

    Turn it on in chat

    Select +, open Connectors, and enable API Design Prover for the conversation.

Where the request belongs

Work API Design Prover can move forward.

Built around the request

Backend engineers who are tired of refactoring broken APIs and technical leads who need to ensure AI-generated designs meet production standards.

01

Backend Engineer

Validates complex endpoints on Tuesday afternoons to ensure they won't break the mobile app.

02

API Architect

Audits AI-generated documentation to make sure it follows the company's standard error protocols.

03

Product Manager

Checks that the API design supports the required pagination and versioning for upcoming features.

Build the capability set

Add more capabilities.

Each Connector adds new actions and data without changing how you work.

Browse Connectors
Postman logo
01 9 capabilities

Postman

Design, test, and document APIs collaboratively with the world most popular API development platform used by millions of developers.

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HTTP Endpoint Collision Detector logo
02 Managed Connector

HTTP Endpoint Collision Detector

Detect overlapping or conflicting HTTP route definitions in your codebase.

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Technical Writing Prover logo
03 1 capability

Technical Writing Prover

An AI wrote API documentation for 'developers.' No expertise level. No prerequisites. A wall of text with no headings. Code examples that referenced a deprecated method. untested. Passive voice throughout: 'it is recommended that the configuration be updated.' A junior engineer followed the docs, deployed to production with the wrong config, and caused a 4-hour outage. This capability forces audience definition, task-based structure, tested examples, ambiguity elimination, and completeness verification.

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Apiary logo
04 10 capabilities

Apiary

Manage your API design-first workflows via Apiary. read blueprints, publish docs, and run tests directly from your AI agent.

View Connector
SwaggerHub logo
05 10 capabilities

SwaggerHub

Connect your AI to SwaggerHub. Read OpenAPI specifications, explore domains, and manage your API design lifecycle natively from the terminal.

View Connector
Levo.ai (API Security & Observability) logo
06 10 capabilities

Levo.ai (API Security & Observability)

Secure your APIs via Levo.ai. audit endpoints, monitor sensitive data (PII/PHI), and manage OWASP vulnerabilities.

View Connector

Bring your own AI

Change the model, client or framework. Keep API Design Prover connected.

  • Claude
  • ChatGPT
  • Gemini
  • Cursor
  • VS Code
  • Windsurf
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  • Zed
  • Continue
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  • CrewAI
  • Vercel AI SDK

Before you connect

Questions about API Design Prover.

The practical details behind the request, access and result.

What does the API Design Prover actually do?

It acts as a quality control gate for your API designs. It checks your routes against industry standards for verbs, versioning, and error handling before you write any code.

Can this help me make my API more like Stripe's?

Yes. It forces the AI to follow high-level patterns like consistent response envelopes and RFC 7807 error structures, which are hallmarks of top-tier APIs.

Does this capability write the actual code for my endpoints?

No, it validates the design blueprint. Once the design is proven correct, you can have your AI agent generate the implementation code.

How does this help with mobile app crashes?

It prevents crashes by forcing the AI to include bounded pagination on all list endpoints, ensuring your app never tries to load 10,000 rows at once.

What is an RFC 7807 error contract?

It is a standard way to return errors as machine-readable JSON. It helps your frontend show specific messages instead of just a generic 500 error.

Will this capability help me with API versioning?

Yes. It forces the AI to define a clear versioning strategy and a deprecation timeline so you don't accidentally break existing clients.

Why does API Design Prover require RFC 7807?

RFC 7807 (Problem Details) is the industry standard for HTTP API error shapes. It ensures that regardless of the endpoint or technology, client developers receive errors they can easily parse and handle.

What versioning methods are supported?

Path versioning (e.g., /v1/users), media type/header versioning, or query parameters. Path versioning is highly recommended due to its simple implementation and client compatibility.

Does it enforce GraphQL standards?

This capability is focused on REST APIs and HTTP resource design. For GraphQL or gRPC, you can adapt the pivots, but out-of-the-box checks validate HTTP status, HTTP verbs, and REST envelope consistency.

One connection away

Give your agent a direct line to API Design Prover.

Connect API Design Prover once. Keep it beside 5,900+ managed Connectors when the next task needs more.

Explore every Connector No credit card required · Free tier available