validate-json — Playwright URL Check MCP Tool
validate-json
(validate json) is one of 30 tools on the
Playwright URL Check
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call validate-json from your client
- Claude Code Playwright URL Check validate-json run in your project directory
- Claude Desktop Playwright URL Check validate-json ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor Playwright URL Check validate-json ~/.cursor/mcp.json
- VS Code Playwright URL Check validate-json .vscode/mcp.json
- Zed Playwright URL Check validate-json ~/.config/zed/settings.json
- Windsurf Playwright URL Check validate-json ~/.codeium/windsurf/mcp_config.json
- Cline Playwright URL Check validate-json ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI Playwright URL Check validate-json ~/.gemini/settings.json
- Grok Playwright URL Check validate-json .mcp.json (in your project root)
- ChatGPT Playwright URL Check validate-json Settings → Connectors → Advanced → Developer mode
- Claude.ai Playwright URL Check validate-json Settings → Connectors → Add custom connector
- LangChain Playwright URL Check validate-json pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http playwright-url-ok https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/playwright-url-ok/mcpOther tools on this server
- playwright-url-ok
- utc-time
- timezone
- 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
- figma-url-shape
- jira-key-shape
- geo-hint
- calc-eval
- 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.