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