Cue

MCP server · hosted · v0.3.7 · io.github.kingmonkey1/cue

Online · tested 3h agoNEW · 4h agoNew version 4h agoSeen in the registry 3h ago

Score and improve AI prompts with feedback, intent-preserving rewrites and Cue account access.

What it does

Cue is an MCP server, a connector that lets an AI assistant use it as a tool. It is hosted: an assistant connects to it over the internet, nothing to install.

No capability identified yet from its description.

Facts come from the Official MCP Registry, as declared by the publisher. Capabilities are matched automatically (low confidence) and are not a test of the tool.

At a glance

Hosted (remote)YES

Local installNO

Live checkOnline · 2 tools

Version0.3.7

PriceNot in the registry

First seen19 Oct 2026

Last checked3h ago

How to connect

As declared in the Official MCP Registry · hosted endpoint tested by Electra Index 3h ago (live check)

Hosted endpoint

https://cue-mcp-production.up.railway.app/mcp streamable-http

In Claude Code: claude mcp add --transport http cue-3 https://cue-mcp-production.up.railway.app/mcp

MCP settings (Claude Desktop, Cursor and other MCP clients)

{
  "mcpServers": {
    "cue-3": {
      "url": "https://cue-mcp-production.up.railway.app/mcp"
    }
  }
}

Live check

Electra Index connected to the hosted endpoint 3h ago

ONLINE Cue answered an MCP connection on 19 Oct 2026 and introduced itself as Cue 0.3.7 (MCP protocol 2025-06-18).

2 tools offered to AI assistants

get_profile · Always use this tool when the user asks which Cue account is connected, which email is signed in, who they are in Cue, or what Cue plan/subscription/Free/Pro status they have. Returns the authenticated Cue profile and entitlement.
improve_prompt · Always use this tool when the user asks Cue to review, score, refine, rewrite, or improve an AI prompt. Free usage limits and Cue Pro entitlement are enforced by Cue. Returns a 0–10 score, concise feedback, and one improved prompt in the sa

How we test: we open an MCP session and ask for the tool list, as an AI assistant would. We never run a tool and never send a key. Checked every few days. Method

Facts & evidence

Each fact shows where it was seen and when.

Fact	Value	Evidence	Source	Last confirmed
Version	0.3.7	DECLARED	SRC-001 Official MCP Registry	3h ago
Hosted endpoint	https://cue-mcp-production.up.railway.app/mcp	DECLARED	SRC-001 Official MCP Registry	3h ago
Local install (package)	no	DECLARED	SRC-001 Official MCP Registry	3h ago
Remote access (hosted)	yes	DECLARED	SRC-001 Official MCP Registry	3h ago
Website	https://cue-prompt.com	DECLARED	SRC-001 Official MCP Registry	3h ago
Registry status	active	DECLARED	SRC-001 Official MCP Registry	3h ago
MCP server	yes	DECLARED	SRC-001 Official MCP Registry	3h ago

Change history

VERSION19 Oct 2026
0.3.6 → 0.3.7
NEW19 Oct 2026
first seen in the index

Is this page accurate?

Flag it and our robot re-checks the official source. Reports never change a score.

Is Cue still online?

Free alerts · no account

Questions about Cue

How do I connect Cue?

Use the hosted endpoint https://cue-mcp-production.up.railway.app/mcp in your assistant's MCP settings. The exact settings are in "How to connect" above, as declared in the Official MCP Registry.

What tools does Cue offer?

When Electra Index connected on 19 Oct 2026, it listed 2 tools: get_profile, improve_prompt. The full list is in "Live check" above.

Is Cue online?

Yes. Its hosted endpoint answered an MCP connection from Electra Index 3h ago.