MCP Config Generator
Create host-specific STDIO and HTTP configurations locally, with credential guidance.
Prefer ${env:NAME} for credential values where this host supports interpolation. Literal values remain local and will be included in your explicit copy or download.
Add server details. Commands and URLs remain text.
Place in .cursor/mcp.json · Format verified: 2026-10-09 · Format reference
32 servers · 128 arguments and 64 environment/header entries per server · combined generated configuration limited to 32 KiB for validation. File paths are never opened.
Local text inspection only. Commands, paths, URLs and annotations are untrusted data. Nothing is executed, connected, authenticated or saved.
Enable JavaScript to process locally. No server submission is available.
Build a configuration with the right host shape.
Select a host, add named servers and enter commands or URLs as text. Arguments are a JSON array so spaces and quoting remain explicit. Environment variables and headers are JSON objects. Use a non-sensitive example to explore the format.
Use documented environment references where possible. Literal credentials remain in memory and will appear in generated JSON and explicit copy/download. Downloads use a portable filename; place the file at the location shown. This tool does not install servers or open environment files.
Boundaries and formats.
Which host profiles are supported?
Cursor uses .cursor/mcp.json. VS Code uses .vscode/mcp.json with a servers root. Portable MCP here means the documented Copilot CLI / Agent Host .mcp.json subset, not a universal configuration standard. Source links and verification dates appear with host selection. Dedicated Claude Desktop validation is deferred.
What stays local?
Inputs, outputs and findings stay in browser memory. Reset and leaving the page clear workspace content. Explicit clipboard and download actions create copies under your control. Ordinary page assets still load from this site.
What are the limits?
Strict JSON only: no comments, trailing commas, duplicate keys or silently rounded numbers. Inputs are capped at 32 KiB UTF-8, 32 nesting levels and 4,000 values. Configurations permit 32 servers, 128 arguments and 64 environment/header entries per server. Conversion output is capped at 128 KiB. No remote MCP inspection is performed.