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