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MCP server report

mcp-toolbelt MCP server

com.papacasper/mcp-toolbelt

We checked this server on 2 November 2026 with McpStamp Check engine 1.2.0. It scored 73 of 100 (grade C), higher than 18.9% of the 33,003 registry servers that responded over HTTPS that day. Ready for MCP Registry. Not ready for Claude, ChatGPT and Gemini.

Measured facts

Score
73C
Sign-in
No sign-in
Tools listed
29
Protocol version
2024-11-05
Stores

Store readiness

StoreStatusReason
Claude Connectors Directory Not ready Blocked by readOnlyHint or destructiveHint on every tool and Human-readable title on every tool.
ChatGPT app directory Not ready Blocked by readOnlyHint or destructiveHint on every tool, Explicit readOnlyHint, destructiveHint and openWorldHint (ChatGPT) and Human-readable title on every tool.
Gemini Connected Apps Not ready Blocked by Supported protocol version negotiated.
Official MCP Registry Ready No blocking check failed.

MCP Registry ready means a valid public remote for the registry, not that the server is listed in a store.

Fixes

5 checks to fix

  1. Fails

    readOnlyHint or destructiveHint on every tool

    tool_annotations

    Blocks Claude and ChatGPT.

    Measured 29/29 tools set neither readOnlyHint nor destructiveHint: url_to_markdown, security_headers_audit, redirect_chain_check, page_performance_check, structured_data

    Set annotations.readOnlyHint: true on read-only tools and destructiveHint: true on tools that modify or delete data (Claude needs one of them on every tool; ChatGPT needs all three hints, see tool_open_world).

  2. Fails

    Supported protocol version negotiated

    protocol_version

    Blocks Gemini.

    Measured Negotiated 2024-11-05

    Return protocolVersion "2025-11-25" (or "2025-06-18") in the initialize result. Gemini Connected Apps requires 2025-03-26 to 2025-11-25.

  3. Fails

    Explicit readOnlyHint, destructiveHint and openWorldHint (ChatGPT)

    tool_open_world

    Blocks ChatGPT.

    Measured 29/29 tools miss an explicit hint: url_to_markdown, security_headers_audit, redirect_chain_check, page_performance_check, structured_data_extract and 24 more

    Set readOnlyHint, destructiveHint and openWorldHint to explicit true/false on every tool (OpenAI app review requires all three).

  4. Fails

    Human-readable title on every tool

    tool_titles

    Blocks Claude and ChatGPT.

    Measured 29/29 without title: url_to_markdown, security_headers_audit, redirect_chain_check, page_performance_check, structured_data_extract and 24 more

    Add a short human-readable "title" to every tool (shown in store UIs and consent screens).

  5. Fails

    GET answers SSE or 405

    get_stream

    Measured HTTP 200 text/html

    Return HTTP 405 Method Not Allowed on GET (or a text/event-stream), not a page or 404.

12 checks passed, 10 did not run

Passed. Served over HTTPS, initialize over Streamable HTTP, JSON or SSE response Content-Type, JSON-RPC error for unknown method, initialize latency, serverInfo name and version, Server instructions, tools capability declared, tools/list returns tools, inputSchema is an object schema, Tool names are valid and portable, Tool descriptions.

Not run. Sign-in method the store supports (OAuth or none), 401 carries WWW-Authenticate resource_metadata, Protected resource metadata (RFC 9728), Resource metadata "resource" equals the server URL, Authorization server metadata (RFC 8414 / OIDC), First metadata URL Gemini tries answers 200 with the required fields, issuer equals the authorization_servers entry; token_endpoint_auth_methods_supported (ChatGPT), PKCE S256 advertised, Client registration (DCR or Client ID Metadata Documents), refresh_token grant advertised. The server asks for no sign-in, so the OAuth checks do not apply.

Run a fresh check

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McpStamp score for mcp-toolbelt

Markdown

[![McpStamp score](https://www.mcpstamp.com/badge?url=https%3A%2F%2Fpapacasper.com%2Fmcp)](https://www.mcpstamp.com/r/com-papacasper-mcp-toolbelt/)

HTML

<a href="https://www.mcpstamp.com/r/com-papacasper-mcp-toolbelt/"><img src="https://www.mcpstamp.com/badge?url=https%3A%2F%2Fpapacasper.com%2Fmcp" alt="McpStamp score" height="20"></a>
Registry entry

About this server

29 DNS, SEO, SSL, security, WHOIS & mail tools for AI agents. Pay per call (x402) or card API key.
Registry name
com.papacasper/mcp-toolbelt
Remote URL
https://papacasper.com/mcp
Version
1.3.1
Website
papacasper.com/mcp-docs
Checked
2 November 2026, engine 1.2.0, no credentials

The description above is the server's own text from the official MCP Registry. If a result looks wrong, run a fresh check and email support@zovo.one with the report link.

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