Reason

What you can do with Reason

Reason is a Model Context Protocol (MCP) server published by reason-machines. It ranks #20,609 of 176,402 active servers on MCP Toplist, and its repository has 11 GitHub stars. Reason is listed on Official MCP, with 1 tracked version. It was first listed on Oct 11, 2026 and most recently updated on Oct 11, 2026.

What Reason can and cannot do

Not verifiedMCP Toplist has not catalogued this server's tools or limitations. The repository README lists them.

What you need before using Reason

Connect Reason and confirm it works

claude mcp add --transport http reason https://mcp.reasonmachines.com/mcp

[mcp_servers.reason]
url = "https://mcp.reasonmachines.com/mcp"

https://mcp.reasonmachines.com/mcp

{
  "mcpServers": {
    "reason": {
      "url": "https://mcp.reasonmachines.com/mcp"
    }
  }
}

{
  "servers": {
    "reason": {
      "type": "http",
      "url": "https://mcp.reasonmachines.com/mcp"
    }
  }
}

{
  "mcpServers": {
    "reason": {
      "serverUrl": "https://mcp.reasonmachines.com/mcp"
    }
  }
}

{
  "mcpServers": {
    "reason": {
      "url": "https://mcp.reasonmachines.com/mcp"
    }
  }
}

When to choose another server

• Reason Network by Reason Machines#393
• OpenAra#46,363

No task-specific alternatives are catalogued for Reasonyet; the list above is its publisher's other servers.

What changed, and when this was checked

First listed

Oct 11, 2026

Latest version published

Oct 11, 2026

Version history

1 version tracked (below)

Requirements evidence

Verified by MCP Toplist on Nov 13, 2026: the public endpoint answered an unauthenticated connection with 401 Unauthorized, so it requires sign-in or an API key.

Profile checked

Not yet — purpose, capabilities and requirements above come from registry data only

Ranking data as of

Oct 11, 2026

Do you maintain Reason? Claim it to show as its verified maintainer and add your own summary, sign-in details and links. The rest of this page is read from the registry listings and from MCP Toplist's own connection check.

Show your rank

Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.

[![MCP Toplist](https://mcptoplist.com/badge/io.github.reason-machines%2Freason.svg)](https://mcptoplist.com/server/io.github.reason-machines%2Freason)

<a href="https://mcptoplist.com/server/io.github.reason-machines%2Freason"><img src="https://mcptoplist.com/badge/io.github.reason-machines%2Freason.svg" alt="MCP Toplist: Top 25% of 176,402" /></a>

Variants: append ?metric=score or ?metric=stars to the image URL.