QQt Documentation MCP (official, remote)

Vendor-hosted
Tested The Qt Company's hosted documentation MCP at https://qt-docs-mcp.qt.io/mcp (server qt-docs-server 0.3.0; registry io.qt.qt-docs-mcp/qt-documentation, latest 0.4.0). Initialize and tools/list worked with no account using protocol 2025-11-25 (2 read-only tools). Real calls: qt_documentation_search for 'QTimer singleShot' returned Qt 6.12 matches and qt_documentation_read returned the QTimer page. Compatibility: Qt's server rejects initialize with HTTP 400 (empty body) when the client sends the MCP-Protocol-Version header as 2025-06-18 (2025-03-26 in that header is rejected the same way). It answers when the header is 2025-11-25 or absent, and always negotiates 2025-11-25, so 2025-03-26 works only as the initialize body version with no header. Clients that pin 2025-06-18 in the header may fail to connect. Our rubric has no compatibility deduction, so this is a note, not a score change. Vendor-hosted, no public source: 65 cap, not source-audited.
Tool-call test (2026-11-11, direct MCP stdio client, no LLM): pass. 2 of 2 read calls passed anonymously (protocol 2025-11-25). Evidence: live endpoint probe, Nov 11, 2026.
Qt-hosted endpoint. Initialize and tools/list worked without sign-in using protocol 2025-11-25 (2 read-only tools); both returned content. Compatibility: initialize returns HTTP 400 when the client sends an MCP-Protocol-Version header of 2025-06-18 (also 2025-03-26). Source isn't public: vendor-hosted 65 cap (Our review, Nov 11, 2026).
Maintenance date 2026-10-01: date from page metadata (JSON-LD BlogPosting dateModified 2026-10-01T08:37:30.593Z (datePublished 2026-05-12T06:29:42.000Z)) of https://www.qt.io/blog/introducing-the-mcp-tool-for-qt-documentation, fetched 2026-11-11T08:34Z. Not a changelog entry.
Sources: https://doc.qt.io/agentictools/mcp/setup-manual/ · https://www.qt.io/blog/introducing-the-mcp-tool-for-qt-documentation · https://registry.modelcontextprotocol.io/v0/servers?search=io.qt.qt-docs-mcp/qt-documentation

Transport (tested 2026-11-11): Streamable HTTP

Score 65/100 · Tools 2 · Token cost approx. 783 tokens · Compare · Last tested 2026-11-11 · Server version 0.3.0 · Remote endpoint https://qt-docs-mcp.qt.io/mcp (streamable-http)

Summary: Qt Documentation MCP (official, remote) completed an MCP handshake without credentials and exposed 2 tools.

Evidence summary

Handshake

pass

Tools listed

2

Context cost

approx. 783 tokens, cl100k estimate (2 tools, measured 2026-11-11; an estimate) ranking · add up your servers' context cost

Login

No key needed for the tools we called

Tested

2026-11-11

Test results

Local-model readiness

Token cost (estimate): approx. 783 tokens, cl100k estimate for 2 tools · about 10% of an 8k context. This is an estimate from our testing (counted with cl100k_base).

Small-model friendly (schema heuristic, not a model result): unknown.

What we tested and what we didn't

Methodology: how we test (vendor-hosted rule). A high score means it responds and its vendor documents and dates it, not that giving it access to your data carries no risk.

{
  "name": "qt-docs-remote",
  "version": null,
  "registry": "remote",
  "status": "working",
  "tested": "2026-11-11",
  "tools_count": 2,
  "deprecated": false,
  "archived": null,
  "tests": {
    "install": [
      "pass",
      20,
      "Endpoint https://qt-docs-mcp.qt.io/mcp reachable over streamable-http (HTTP 200) in 0.8s; no install step for remote servers."
    ],
    "handshake": [
      "pass",
      30,
      "MCP `initialize` (protocol 2025-11-25, server qt-docs-server 0.3.0) + `tools/list` over streamable-http succeeded with no credentials; 2 tools listed in 0.8s. Tool calls may still need a key."
    ],
    "maintenance": [
      "partial",
      15,
      "Vendor-hosted rule: scored from vendor docs page 2026-10-01, date from page metadata (JSON-LD BlogPosting dateModified 2026-10-01T08:37:30.593Z (datePublished 2026-05-12T06:29:42.000Z), fetched 2026-11-11T08:34Z) (https://www.qt.io/blog/introducing-the-mcp-tool-for-qt-documentation), 41 days before test. Registry (corroboration only, not scored): io.qt.qt-docs-mcp/qt-documentation 0.4.0 published 2026-11-09."
    ],
    "docs": [
      "pass",
      15,
      "official MCP docs page; states the endpoint URL; client setup instructions. Vendor-hosted rule: scored from the vendor's official MCP docs (https://doc.qt.io/agentictools/mcp/setup-manual/)."
    ],
    "license": [
      "fail",
      0,
      "Vendor-hosted service with no public repo: no license to cite, so 0 (rule: no points without a cited source)."
    ]
  }
}

Install

https://qt-docs-mcp.qt.io/mcpCopy

Tools listed

qt_documentation_read, qt_documentation_search

Tool history: captured Nov 11, 2026. All tool history.

Quick config

{
  "mcpServers": {
    "qt-documentation-mcp-remote": {
      "type": "http",
      "url": "https://qt-docs-mcp.qt.io/mcp"
    }
  }
}

Add to config Opens the config generator with this server selected.

{
  "mcpServers": {
    "qt-documentation-mcp-remote": {
      "type": "http",
      "url": "https://qt-docs-mcp.qt.io/mcp"
    }
  }
}

Related: Troubleshooting: Protocol version mismatch (HTTP 400)

FAQ

Is Qt Documentation MCP deprecated?

No. qt-docs-remote was not deprecated or archived when we last tested it on 2026-11-11.

What replaces Qt Documentation MCP?

Nothing; Qt Documentation MCP (official, remote) is not deprecated as of 2026-11-11.

Does Qt Documentation MCP need an API key?

No. It completed an MCP handshake with no credentials and listed 2 tools.

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