How to Use the Accessibility Prover MCP in OpenAI Agents SDK

Q: How do I add Accessibility Prover to my OpenAI Agents SDK agent?

You initialize the server by passing the endpoint to the MCPServerStreamableHttp constructor. Once connected, your agent automatically discovers the tool and applies it to your UI generation tasks.

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Connect Accessibility Prover MCP to OpenAI Agents SDK

Create your Vinkius account to connect Accessibility Prover to OpenAI Agents SDK and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Accessibility Prover with OpenAI Agents SDK

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Enforce WCAG 2.2 AA standards in OpenAI Agents SDK

The `validate_accessibility` tool forces your agent to inspect your DOM structure before it commits to a design. It checks for semantic landmarks and verifies that your focus management prevents modal traps. You get an immediate block if your code lacks proper keyboard navigation or tab order. This stops the agent from generating inaccessible code in your production environment.

Check contrast ratios for OpenAI Agents SDK components

Your agent calculates exact numerical contrast ratios against your brand colors using the `validate_accessibility` tool. It flags any element falling below 4.5:1 before the UI hits your staging build. This ensures every text element remains readable for all users. The agent won't proceed until you hit the required threshold.

Automate ARIA and motion specs in OpenAI Agents SDK

The `validate_accessibility` tool mandates proper `aria-label` definitions and explicit form labels for every input. It refuses to accept generic div click handlers that break screen reader support. It also verifies that your CSS includes `prefers-reduced-motion` overrides for all transitions. Your agent handles these technical requirements automatically during the build process.

Setup guide

Set up Accessibility Prover MCP in OpenAI Agents SDK

Prerequisites

Python 3.10+ installed
openai-agents package (pip install openai-agents)
Active Vinkius subscription with a valid endpoint token

1

Install the SDK

Run pip install openai-agents to install the OpenAI Agents SDK. The MCP integration is built-in — no extra dependencies needed.
2

Connect via SSE transport

Use MCPServerSse with your Vinkius endpoint URL. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. The SDK auto-discovers all Accessibility Prover tools at runtime.
3

Create your Agent

Pass the MCP to Agent(mcp_servers=[server]). The agent receives Accessibility Prover tools as native definitions — JSON schemas resolve automatically.
4

Run the agent

Call Runner.run(agent, prompt) to execute. The agent invokes the appropriate Accessibility Prover tools and returns structured results. Copy the full example on the right to get started.

agent.py

import asyncio
from agents import Agent, Runner
from agents.mcp import MCPServerSse

async def main():
    async with MCPServerSse(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    ) as server:
        agent = Agent(
            name="Accessibility Prover Agent",
            instructions="You have access to Accessibility Prover tools.",
            mcp_servers=[server],
        )
        result = await Runner.run(agent, "List recent transactions")
        print(result.final_output)

asyncio.run(main())

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Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Accessibility Prover. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about Accessibility Prover MCP in OpenAI Agents SDK

You initialize the server by passing the endpoint to the `MCPServerStreamableHttp` constructor. Once connected, your agent automatically discovers the tool and applies it to your UI generation tasks.

It stops the agent if the UI fails to meet specific accessibility criteria. Think of it as a hard gate that prevents bad code from ever reaching your repository.

Yes, it specifically tests for focus indicators and modal traps within your component definitions. The tool rejects any layout that prevents users from navigating out of a modal via keyboard.

No, you just install the server and point your agent at the URL. It functions as a standard part of your agent's toolset without needing custom glue code.

The server only processes your component markup and CSS selectors to verify accessibility compliance. No user PII or sensitive database records ever leave your agent's environment.

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