calc-eval — Port 20 MCP Tool
calc-eval
(calc eval) is one of 31 tools on the
Port 20
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 Port 20 calc-eval run in your project directory
- Claude Desktop Port 20 calc-eval ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor Port 20 calc-eval ~/.cursor/mcp.json
- VS Code Port 20 calc-eval .vscode/mcp.json
- Zed Port 20 calc-eval ~/.config/zed/settings.json
- Windsurf Port 20 calc-eval ~/.codeium/windsurf/mcp_config.json
- Cline Port 20 calc-eval ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI Port 20 calc-eval ~/.gemini/settings.json
- Grok Port 20 calc-eval .mcp.json (in your project root)
- ChatGPT Port 20 calc-eval Settings → Connectors → Advanced → Developer mode
- Claude.ai Port 20 calc-eval Settings → Connectors → Add custom connector
- LangChain Port 20 calc-eval pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http port-20 https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/port-20/mcpOther tools on this server
- port-20
- 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.