Emerging / New

Use Foldr with Jan AI (MCP)

Jan is an open-source, privacy-focused desktop AI chat app that runs entirely offline - a direct Ollama alternative with a nicer UI. Jan added MCP support in its v0.5 series. Foldr bridges Jan's local-first ethos with selective publishing: your conversation stays private, only the explicit file upload goes out.

JanmacOS, Windows, LinuxMCP: beta

Installation

Add the Foldr MCP server to Jan AI with the snippet below. Replace fs_… with an API key from foldr.space/developers/signup. Each upload costs 5¢ - top up account credits or subscribe to Pro tier to bypass per-call charges.

{
  "mcpServers": {
    "foldr": {
      "command": "npx",
      "args": ["-y", "@foldr/mcp-server"],
      "env": { "FOLDR_API_KEY": "fs_live_..." }
    }
  }
}

Setup tip: Jan → Settings → Extensions → Model Context Protocol.

Official Jan AI MCP docs

What You Can Do

Upload any file from Jan AI to Foldr and get a permanent shareable URL back in the same turn (5¢ per upload, debited from credits)
Mint short-lived capability tokens to share files with downstream agents without leaking your API key
Organize uploads into per-API-key folders with hierarchical structure
Shorten long URLs to foldr.space/s/... links - free with any API key

Jan AI + Foldr FAQ

How do I install the Foldr MCP server in Jan AI?

Open Jan AI'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/developers/signup. Restart Jan AI if it doesn't hot-reload.

How much does it cost to use Foldr from Jan AI?

Each upload costs 5¢. You can pay by topping up account credits via the `top_up_credits` MCP tool (min $5) - every upload then debits from balance. Or subscribe to Pro tier ($25/mo) and per-call charges are bypassed entirely. Tools that don't write data (list_files, mint_capability, get_usage, etc.) are free.

I set the key but Jan AI says the Foldr tool isn't available - what's wrong?

Three common causes: (1) Jan AI wasn't restarted after editing the config - most MCP hosts need a restart to pick up new servers. (2) The API key is wrong or missing - verify the env var name your client reads (e.g. FOLDR_API_KEY) matches the config snippet above. (3) Your client doesn't support the streamable-http transport - most modern clients do, but check Jan AI's docs for the version that added MCP support.

Can Jan AI upload files directly to Foldr, or just generate URLs?

Jan AI can do both. The MCP server exposes tools for `upload_file` (base64-encoded file content), `bulk_upload` (up to 20 files in one call), `mint_capability` (short-lived shareable links), and `create_short_url`. Any file Jan AI can read from disk can be uploaded.

Is the Foldr MCP integration with Jan AI production-ready?

Foldr's MCP server is stable and used in production - streamable-http transport at https://foldr.space/api/mcp with 23 tools. Jan AI's MCP support is currently in public beta - suitable for day-to-day use. Every write endpoint accepts an Idempotency-Key so retries are safe.

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Connect Jan AI to Foldr in under a minute

Grab an API key, paste the snippet above into Jan AI's MCP config, top up credits (or grab a Pro subscription), and your agent can upload files and mint share links immediately.

Get your Foldr API key x402 details