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