OpenRouter Reasoning MCP
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@OpenRouter Reasoning MCPExplain why binary search is O(log n), then verify your reasoning."
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
OpenRouter Reasoning MCP
A stateless remote Model Context Protocol (MCP) server running on Cloudflare Workers.
It exposes one tool, multi_step_reasoning, which sends a prompt to OpenRouter, performs a second verification pass, and returns both responses plus provider reasoning fields when available.
Architecture
MCP client
│
│ Streamable HTTP
▼
Cloudflare Worker /mcp
│
├── OpenRouter request #1
│
└── OpenRouter request #2 (verification)
│
▼
OpenRouter model
stealth/ox-alphaRelated MCP server: CRASH - Cascaded Reasoning with Adaptive Step Handling
Requirements
Node.js
A Cloudflare account
An OpenRouter API key
Wrangler authentication
Local development
npm install
npx wrangler login
npx wrangler secret put OPENROUTER_API_KEY
npm run devThe MCP endpoint is /mcp.
Deploy
npm install
npx wrangler login
npx wrangler secret put OPENROUTER_API_KEY
npm run typecheck
npm run deployAfter deployment, the endpoint will be:
https://openrouter-reasoning-mcp.<your-subdomain>.workers.dev/mcpMCP client configuration
Use the deployed /mcp URL as a remote MCP server using Streamable HTTP. Do not configure the endpoint as the deprecated HTTP+SSE transport.
Tool
multi_step_reasoning
Input:
{
"prompt": "Explain why a binary search is O(log n).",
"follow_up": "Verify the explanation and correct any mistakes."
}follow_up is optional. The default is:
Are you sure? Think carefully and verify your answer.Security
The OpenRouter key is stored as a Cloudflare Worker secret and is never committed to Git. The current server is intentionally unauthenticated, meaning anyone who can reach the /mcp endpoint can invoke the tool and consume the configured OpenRouter account. Add MCP authentication/authorization before using this publicly with a paid OpenRouter key.
License
MIT
This server cannot be deployed
Maintenance
Related MCP Connectors
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Check AI work against requirements and return structured verdicts, findings, and repair steps.
- LiminalityOAuthai.physea
Breaks a hard question or decision into checkable sub-questions, grounds each to a real tool.
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