compatibility — Utility 39 MCP Tool
compatibility
(compatibility) is one of 31 tools on the
Utility 39
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call compatibility from your client
- Claude Code Utility 39 compatibility run in your project directory
- Claude Desktop Utility 39 compatibility ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor Utility 39 compatibility ~/.cursor/mcp.json
- VS Code Utility 39 compatibility .vscode/mcp.json
- Zed Utility 39 compatibility ~/.config/zed/settings.json
- Windsurf Utility 39 compatibility ~/.codeium/windsurf/mcp_config.json
- Cline Utility 39 compatibility ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI Utility 39 compatibility ~/.gemini/settings.json
- Grok Utility 39 compatibility .mcp.json (in your project root)
- ChatGPT Utility 39 compatibility Settings → Connectors → Advanced → Developer mode
- Claude.ai Utility 39 compatibility Settings → Connectors → Add custom connector
- LangChain Utility 39 compatibility pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http util-039 https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/util-039/mcpOther tools on this server
- util-039
- utc-time
- timezone
- validate-json
- normalize-url
- inspect-robots
- domain-shape
- citation
- status-catalog
- iana-zones
- web-fetch
- fetch-status
- github-repo-shape
- weather-hint
- memory-key-count
- file-path-ok
- browser-url-ok
- think-steps
- search-query-len
- hn-front-count
- lib-docs-hint
- playwright-url-ok
- figma-url-shape
- jira-key-shape
- geo-hint
- calc-eval
- wiki-title-ok
- agent-tool-index
- people-search-index
- agent-ads-index
This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.