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