calc-eval — BCP 47 lang attribute shape MCP Tool
calc-eval
(calc eval) is one of 31 tools on the
BCP 47 lang attribute shape
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 BCP 47 lang attribute shape calc-eval run in your project directory
- Claude Desktop BCP 47 lang attribute shape calc-eval ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor BCP 47 lang attribute shape calc-eval ~/.cursor/mcp.json
- VS Code BCP 47 lang attribute shape calc-eval .vscode/mcp.json
- Zed BCP 47 lang attribute shape calc-eval ~/.config/zed/settings.json
- Windsurf BCP 47 lang attribute shape calc-eval ~/.codeium/windsurf/mcp_config.json
- Cline BCP 47 lang attribute shape calc-eval ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI BCP 47 lang attribute shape calc-eval ~/.gemini/settings.json
- Grok BCP 47 lang attribute shape calc-eval .mcp.json (in your project root)
- ChatGPT BCP 47 lang attribute shape calc-eval Settings → Connectors → Advanced → Developer mode
- Claude.ai BCP 47 lang attribute shape calc-eval Settings → Connectors → Add custom connector
- LangChain BCP 47 lang attribute shape calc-eval pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http html-lang-ok https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/html-lang-ok/mcpOther tools on this server
- html-lang-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.