How to Use the Cosmic (Headless CMS & Content API) MCP in OpenAI Agents SDK

Build production-grade content agents that manage Cosmic buckets directly via the OpenAI Agents SDK.

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Connect Cosmic (Headless CMS & Content API) MCP to OpenAI Agents SDK

Create your Vinkius account to connect Cosmic (Headless CMS & Content API) 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 Cosmic (Headless CMS & Content API) with OpenAI Agents SDK

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Run batch content updates in production

Stop writing custom scripts to sync your databases with your CMS. This MCP server lets your Python agents manage your Cosmic workspace by calling `batch_objects` and `update_object` dynamically. You get full visibility into every action through the OpenAI developer dashboard. When your agent needs to clean up stale metadata or draft a dozen landing pages, it handles the heavy lifting in one go. It uses `create_object` to spin up drafts and matches them against your schema without breaking a sweat.

Control media and schemas via this MCP Server

Your agent doesn't just write text; it handles your entire media library too. By exposing `create_media` and `list_media` to your agent, you can feed raw assets directly into your buckets and let the model organize them. If your content architecture changes, the agent adapts. It can run `create_object_type` or `update_object_type` to adjust your structure on the fly, keeping your production schemas aligned with your actual data requirements.

Track conversation states and revisions

Keeping track of what your agent did and why is a nightmare in production. This setup solves that by exposing `get_agent_conversation_history` and `list_agent_conversations` so you can audit agent decisions over time. If an agent makes an unwanted edit, you don't have to panic. The `list_revisions` and `get_revision` tools let your system inspect previous states and roll back changes to keep your production site safe.

Setup guide

Set up Cosmic (Headless CMS & Content API) 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 Cosmic (Headless CMS & Content API) tools at runtime.
3

Create your Agent

Pass the MCP to Agent(mcp_servers=[server]). The agent receives Cosmic (Headless CMS & Content API) tools as native definitions — JSON schemas resolve automatically.
4

Run the agent

Call Runner.run(agent, prompt) to execute. The agent invokes the appropriate Cosmic (Headless CMS & Content API) 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="Cosmic (Headless CMS & Content API) Agent",
            instructions="You have access to Cosmic (Headless CMS & Content API) tools.",
            mcp_servers=[server],
        )
        result = await Runner.run(agent, "List recent transactions")
        print(result.final_output)

asyncio.run(main())

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Common questions about Cosmic (Headless CMS & Content API) MCP in OpenAI Agents SDK

Install openai-agents via pip and configure the MCPServerStreamableHttp client with your Vinkius HTTP endpoint. This connects the MCP Server to your codebase, allowing the SDK to automatically discover all 21 tools.

Yes, you can control tool access at the SDK level by filtering the discovered tool list before passing it to your agent. This prevents the agent from running destructive tools like `delete_object` while still allowing it to read data.

The SDK relies on Cosmic's API response validation and the tool schemas provided by the MCP Server. When the agent calls `create_object_type`, the SDK validates the arguments against the tool's JSON schema before sending the payload.

Yes, you can set up a routing agent that handles high-level requests and hand off specific content creation tasks to a sub-agent equipped with the Cosmic tools. This keeps your system modular and prevents a single agent from getting overwhelmed.

Your CMS content, media assets, and API tokens are completely isolated. Vinkius runs the server in an ephemeral V8 sandbox, ensuring that raw data never persists on our servers. All traffic is encrypted end-to-end, so your proprietary content remains strictly private.

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