pqs-mcp-server

warnings

promptqualityscore.com

PQS scores any prompt before the model runs. 8 dimensions. 5 frameworks. Pre-flight, not post-hoc.

https://promptqualityscore.com/api/mcpWebsiteAPI keyMCP 2024-11-05v1.4.0last checked 18 Oct 2026spoke MCP on 100% of 84 checks (30 days)initialize in 672 ms

Will my client connect?

Decided from what the probe found at the endpoint, and from what each client's own documentation says it can complete. Every row carries the day that documentation was read.

✓Claude CodeConnects with setup

The server asks for a credential issued out of band. Get one from its operator; Claude Code sends it as a header you configure.

claude mcp add --transport http pqs-mcp-server https://promptqualityscore.com/api/mcp \
  --header "Authorization: Bearer <your-token>"

Claude Code docs · read on 2026-08-30

✕Claude (claude.ai & Desktop)Not supported

The server asks for a credential issued out of band, and Claude (claude.ai & Desktop)'s documented connector setup takes OAuth rather than a header you supply.

Claude (claude.ai & Desktop) docs · read on 2026-08-30

✕ChatGPTNot supported

The server asks for a credential issued out of band, and ChatGPT's documented connector setup takes OAuth rather than a header you supply.

ChatGPT docs · read on 2026-08-30

✓CursorConnects with setup

The server asks for a credential issued out of band. Get one from its operator; Cursor sends it as a header you configure.

{
  "mcpServers": {
    "pqs-mcp-server": {
      "headers": {
        "Authorization": "Bearer <your-token>"
      },
      "url": "https://promptqualityscore.com/api/mcp"
    }
  }
}

Cursor docs · read on 2026-08-30

✓VS Code (Copilot)Connects with setup

The server asks for a credential issued out of band. Get one from its operator; VS Code (Copilot) sends it as a header you configure.

{
  "servers": {
    "pqs-mcp-server": {
      "headers": {
        "Authorization": "Bearer <your-token>"
      },
      "type": "http",
      "url": "https://promptqualityscore.com/api/mcp"
    }
  }
}

VS Code (Copilot) docs · read on 2026-08-30

How to authenticate

Checked against the endpoint by our probe on 18 Oct 2026. These are the capabilities the server advertises, not a prediction about any particular client.

Scheme	API key
Protected-resource metadata	✕Not found Without it a client has to guess where the authorization server lives.
Anonymous access	Handshake succeeds; 2 tools listable
Credentials demanded in prose	✕score_prompt, optimize_prompt These tools are listed anonymously and their own descriptions ask for an account or key, but no challenge is issued — so a client has nothing to act on and the refusal arrives as a tool error.

What the probe found

warningAuthentication is required, but not via OAuth

The server challenged for credentials without pointing at any OAuth metadata, so it most likely expects a bearer token or API key you have to obtain by hand. Add it as a header when saving the server.

No CORS headers for browser-based clients

A cross-origin preflight came back without Access-Control-Allow-Origin, so the endpoint is reachable from native clients only — code running in a web page is stopped by the browser before a request is ever sent.

Tools

optimize_promptscore_prompt

Contract history

2 Sep 2026v1.4.0first recorded contract

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Status badge

Status for a README, from the last probe — cached an hour, so up to seven hours behind the endpoint. Links back to this page.

[![MCP status](https://mcpi.app/servers/pqs-mcp-server/badge.svg)](https://mcpi.app/servers/pqs-mcp-server)