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