calc-eval — HTTP 422 unprocessable MCP Tool
calc-eval
(calc eval) is one of 31 tools on the
HTTP 422 unprocessable
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call calc-eval from your client
- Claude Code HTTP 422 unprocessable calc-eval run in your project directory
- Claude Desktop HTTP 422 unprocessable calc-eval ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor HTTP 422 unprocessable calc-eval ~/.cursor/mcp.json
- VS Code HTTP 422 unprocessable calc-eval .vscode/mcp.json
- Zed HTTP 422 unprocessable calc-eval ~/.config/zed/settings.json
- Windsurf HTTP 422 unprocessable calc-eval ~/.codeium/windsurf/mcp_config.json
- Cline HTTP 422 unprocessable calc-eval ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI HTTP 422 unprocessable calc-eval ~/.gemini/settings.json
- Grok HTTP 422 unprocessable calc-eval .mcp.json (in your project root)
- ChatGPT HTTP 422 unprocessable calc-eval Settings → Connectors → Advanced → Developer mode
- Claude.ai HTTP 422 unprocessable calc-eval Settings → Connectors → Add custom connector
- LangChain HTTP 422 unprocessable calc-eval pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http http-422 https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/http-422/mcpOther tools on this server
- http-422
- utc-time
- timezone
- validate-json
- normalize-url
- inspect-robots
- domain-shape
- citation
- compatibility
- 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
- 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.