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