calc-eval — Browser URL Check MCP Tool
calc-eval
(calc eval) is one of 30 tools on the
Browser URL Check
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 Browser URL Check calc-eval run in your project directory
- Claude Desktop Browser URL Check calc-eval ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor Browser URL Check calc-eval ~/.cursor/mcp.json
- VS Code Browser URL Check calc-eval .vscode/mcp.json
- Zed Browser URL Check calc-eval ~/.config/zed/settings.json
- Windsurf Browser URL Check calc-eval ~/.codeium/windsurf/mcp_config.json
- Cline Browser URL Check calc-eval ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI Browser URL Check calc-eval ~/.gemini/settings.json
- Grok Browser URL Check calc-eval .mcp.json (in your project root)
- ChatGPT Browser URL Check calc-eval Settings → Connectors → Advanced → Developer mode
- Claude.ai Browser URL Check calc-eval Settings → Connectors → Add custom connector
- LangChain Browser URL Check calc-eval pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http browser-url-ok https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/browser-url-ok/mcp
Other tools on this server
- browser-url-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
- 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.