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