validate-json — Utility 12 MCP Tool
validate-json
(validate json) is one of 31 tools on the
Utility 12
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 Utility 12 validate-json run in your project directory
- Claude Desktop Utility 12 validate-json ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor Utility 12 validate-json ~/.cursor/mcp.json
- VS Code Utility 12 validate-json .vscode/mcp.json
- Zed Utility 12 validate-json ~/.config/zed/settings.json
- Windsurf Utility 12 validate-json ~/.codeium/windsurf/mcp_config.json
- Cline Utility 12 validate-json ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI Utility 12 validate-json ~/.gemini/settings.json
- Grok Utility 12 validate-json .mcp.json (in your project root)
- ChatGPT Utility 12 validate-json Settings → Connectors → Advanced → Developer mode
- Claude.ai Utility 12 validate-json Settings → Connectors → Add custom connector
- LangChain Utility 12 validate-json pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http util-012 https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/util-012/mcpOther tools on this server
- util-012
- 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
- playwright-url-ok
- 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.