validate-json — RFC 3339 UTC stamp MCP Tool
validate-json
(validate json) is one of 31 tools on the
RFC 3339 UTC stamp
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 RFC 3339 UTC stamp validate-json run in your project directory
- Claude Desktop RFC 3339 UTC stamp validate-json ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor RFC 3339 UTC stamp validate-json ~/.cursor/mcp.json
- VS Code RFC 3339 UTC stamp validate-json .vscode/mcp.json
- Zed RFC 3339 UTC stamp validate-json ~/.config/zed/settings.json
- Windsurf RFC 3339 UTC stamp validate-json ~/.codeium/windsurf/mcp_config.json
- Cline RFC 3339 UTC stamp validate-json ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI RFC 3339 UTC stamp validate-json ~/.gemini/settings.json
- Grok RFC 3339 UTC stamp validate-json .mcp.json (in your project root)
- ChatGPT RFC 3339 UTC stamp validate-json Settings → Connectors → Advanced → Developer mode
- Claude.ai RFC 3339 UTC stamp validate-json Settings → Connectors → Add custom connector
- LangChain RFC 3339 UTC stamp validate-json pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http rfc3339-now https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/rfc3339-now/mcpOther tools on this server
- rfc3339-now
- 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.