Use Foldr with GPT4All (MCP)
GPT4All is Nomic's privacy-first desktop app for running local models with a built-in Local Docs RAG system. Recent versions expose an experimental MCP bridge for external tools. Foldr lets GPT4All go from a private read-only assistant to one that can actually publish output to the web on demand.
Installation
Add the Foldr MCP server to GPT4All with the snippet below. Replace fs_live_... with an API key from foldr.space/developers.
{
"mcpServers": {
"foldr": {
"command": "npx",
"args": ["-y", "@foldr/mcp-server"],
"env": { "FOLDR_API_KEY": "fs_live_..." }
}
}
}Setup tip: GPT4All → Settings → Application → Integrations → MCP Servers.
Official GPT4All MCP docsWhat You Can Do
- Upload any file from GPT4All to Foldr and get a shareable URL back in the same turn
- Shorten long URLs to foldr.space/s/... links without leaving GPT4All
- Create or update a Foldr bio page from a GPT4All conversation
- Generate a hosted Foldr form and paste the submission URL into your reply
- Let chat participants retrieve uploaded files by asking for them by filename
GPT4All + Foldr FAQ
How do I install the Foldr MCP server in GPT4All?
Open GPT4All's MCP configuration (the JSON settings file) and paste the config block shown above. Set FOLDR_API_KEY to a key you create at foldr.space/api-keys. Restart GPT4All if it doesn't hot-reload.
Which Foldr plan do I need to use the MCP integration with GPT4All?
The Foldr MCP server is available on every paid plan (Pro from $5/mo and Developer tier for API-heavy usage). The free tier can generate temporary 7-day links; for permanent storage, a Pro plan or Foldr Space is required.
I set the key but GPT4All says the Foldr tool isn't available — what's wrong?
The two most common issues: (1) GPT4All wasn't restarted after editing the config — most MCP hosts need a restart to pick up new servers. (2) Your API key is missing the `mcp:invoke` scope. Regenerate a key at foldr.space/api-keys with full scope and retry.
Can GPT4All upload files directly to Foldr, or just generate URLs?
GPT4All can do both. The MCP server exposes tools for `upload_file` (takes a local path or base64 blob), `shorten_url`, and `create_bio_page`. Any file GPT4All can read from disk can be uploaded.
Is the Foldr MCP integration with GPT4All production-ready?
Foldr's MCP server is stable and used in production. GPT4All's MCP support is currently experimental — expect rough edges and breaking changes. We pin to stable SDK versions and publish changelog entries for every breaking change.
Related MCP Integrations
Connect GPT4All to Foldr in under a minute
Grab an API key, paste the snippet above into GPT4All's MCP config, and your agent can upload files and share URLs immediately.
Get your Foldr API key