compatibility — HTTP 401 unauthorized MCP Tool
compatibility
(compatibility) is one of 31 tools on the
HTTP 401 unauthorized
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call compatibility from your client
- Claude Code HTTP 401 unauthorized compatibility run in your project directory
- Claude Desktop HTTP 401 unauthorized compatibility ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor HTTP 401 unauthorized compatibility ~/.cursor/mcp.json
- VS Code HTTP 401 unauthorized compatibility .vscode/mcp.json
- Zed HTTP 401 unauthorized compatibility ~/.config/zed/settings.json
- Windsurf HTTP 401 unauthorized compatibility ~/.codeium/windsurf/mcp_config.json
- Cline HTTP 401 unauthorized compatibility ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI HTTP 401 unauthorized compatibility ~/.gemini/settings.json
- Grok HTTP 401 unauthorized compatibility .mcp.json (in your project root)
- ChatGPT HTTP 401 unauthorized compatibility Settings → Connectors → Advanced → Developer mode
- Claude.ai HTTP 401 unauthorized compatibility Settings → Connectors → Add custom connector
- LangChain HTTP 401 unauthorized compatibility pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http http-401 https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/http-401/mcpOther tools on this server
- http-401
- 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.