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