Anneal MCP Server

by imsovikde Your server? Claim it

answering

Anneal is answering right now. Last checked 1 min ago. Last commit 11 Sep 2026.

Zero-friction personal operating system: habits, tasks, and FSRS-5 study retention via remote MCP.

Uptime history 11 days of history

11 days agonow

100.0%

Uptime 24h

92 of 92 checks

—

Tools

hidden behind auth

520 ms

Response time

average over 24h

Stars

last commit 11 Sep 2026

Nothing serious here today

Today is the operative word: we check Anneal every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 1 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add anneal --transport http https://anneal-os.vercel.app/api/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "anneal": {
      "url": "https://anneal-os.vercel.app/api/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.anneal]
url = "https://anneal-os.vercel.app/api/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "anneal": {
      "url": "https://anneal-os.vercel.app/api/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "anneal": {
      "url": "https://anneal-os.vercel.app/api/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.

Endpoints

URL	Transport	State	Latency	Checked
https://anneal-os.vercel.app/api/mcp	streamable-http	sign-in	274 ms	1 min ago

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Anneal — questions

Answers built from our own checks of this server.

Why is there no tool list for Anneal?

The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 100.0% of checks in the last 24 hours got a reply.

Is Anneal working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 520 ms. The bar chart above shows every period we have measured.

How do I connect Anneal?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You sign in through your browser once and the client keeps the session: no key to copy, and it refuses anonymous clients.

How do you sign in to Anneal?

No API key is involved. Anneal answers our knock with an OAuth challenge, so you authorise it once in your browser and the client keeps the session. That is also why we see no tool list: it will not describe itself to an anonymous client, and that is the server working as intended, not a fault.

How fast is Anneal?

It answers our handshake in 520 ms on average, which is faster than 29% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Anneal open source?

Yes — it is published under the MIT licence and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.