MCP JSON Validator for Cursor Configs
Paste placeholder-based JSON and check common Cursor MCP syntax and structure issues locally.
Validation is intended to run locally in your browser. Do not paste real credentials, cookies, production values, or service-role values. Generated configs use placeholders and should be reviewed manually before use.
Validation runs in this browser. Do not paste real credentials or production values. This tool does not upload or store your JSON.
Validation results
Paste placeholder-based JSON and click Validate.
No JSON input yet.
Fix suggestions
- Load the example or paste a placeholder-based Cursor MCP config.
What this page helps with
- Check common Cursor MCP setup issues without connecting accounts.
- Use placeholder-only examples and review every command manually.
- This page does not guarantee that a config or MCP server works in every environment.
Next steps for Cursor MCP setup
Validate MCP JSON
Check JSON syntax and common Cursor MCP structure issues locally.
Generate a config template
Create placeholder-based configs for common MCP server types.
Set up Cursor MCP
Follow a practical setup flow for config, reload, and verification.
Troubleshoot MCP issues
Work through invalid JSON, path, command, env, startup, and reload checks.
This site is an independent third-party setup helper and is not affiliated with, endorsed by, or sponsored by Cursor, Figma, GitHub, Slack, Supabase, or their owners. Brand names are used only to describe compatibility and setup context.
FAQ
Does this page upload my config?
No backend upload is required for the V0 tool flow. Pasted config should be processed in the browser.
Can it guarantee a fix?
No. It narrows common syntax, structure, setup, and permission issues only.
Should I paste real credentials?
No. Use placeholders only and replace values locally.