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