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