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