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