yungle

Yungle for developers

Send large files from your terminal, your scripts and your AI assistant. Private, EU-hosted file transfer: a WeTransfer alternative with a CLI, an MCP server, typed SDKs and webhooks.

Website · Docs · API reference · CLI · MCP · TypeScript · Python

npm install -g yungle-cli
yungle login                  # opens your browser, once
yungle send ./render.mov      # uploads resumably, prints the link

Want Yungle to email the link for you? Sign in with an API key (yungle login --key) and add --to client@example.com. A browser sign-in makes links but never emails anyone, so a phished sign-in code can't be used to mail strangers.

What's in here

	Install	What it's for
CLI	npm i -g yungle-clibrew install heindewilde/yungle/yungle	Send, receive and sync files from a terminal or CI. Resumes after a dropped connection or a closed lid
MCP server	https://yungle.co/mcp	Connect Claude, Cursor or any MCP client with one sign-in: ask what arrived, share files, approve every send
TypeScript SDK	npm i yungle-client	The whole API, typed and dependency-free. Node, Bun, Deno, edge runtimes
Python SDK	pip install yungle	The API from Python, with a one-call send() that handles the upload
GitHub Action	uses: heindewilde/yungle-send-action@v1	Send build artefacts to a client from CI and get the link back as an output
Examples		GitHub Actions, nightly reports, and more at yungle.co/developers/recipes

All of it talks to the same public REST API (OpenAPI 3.1), which CI checks these clients against on every change.

The CLI

Built to be pleasant for a person and predictable for a script. Pretty at a terminal, just the link when piped, JSON with --json.

yungle send ~/Shoot --to anna@studio.nl --message "Final selects"   # send a folder
yungle send dist/ --json | jq -r .url                               # in a script
yungle get https://yungle.co/t/emerald-palm-a5mt                    # download, no account needed
yungle status                                                       # who downloaded what
yungle watch ~/Renders --collection 01J8Z3M9Q0W4                    # upload new files as they land
yungle webhooks listen --forward-to http://localhost:8080/hooks     # test webhooks locally

• Resumable, big uploads. Interrupt yungle send, run it again, and it continues from the last committed part instead of starting over.
• Guided when you leave something out. yungle send on its own asks what to send and to whom. Never in CI, never with --json or --yes: a script can't hang on a question.
• Errors tell you the fix. Every failure ends with the one command that gets you unstuck, and a typo gets a did you mean.
• Tab completion for zsh, bash and fish: yungle completion zsh.

Full reference: apps/cli · yungle.co/developers/cli

Connect your AI assistant

Add Yungle as a remote MCP server and sign in once. No key to copy.

https://yungle.co/mcp

Then ask things like "Did Anna download the final set?", "Which deliveries expire this week?" or "Share these three files with the client." The assistant prepares; you approve every send before an email leaves. There is no tool that deletes, revokes or invites, and everything the server returns is labelled as untrusted data, because a filename can carry a prompt injection.

Prefer a local server with an API key? yungle mcp install writes the config for Claude Desktop, Claude Code, Cursor or Windsurf. Details: packages/mcp-server.

The SDKs

import { YungleClient } from 'yungle-client';

const yungle = new YungleClient({ apiKey: process.env.YUNGLE_API_KEY! });
for await (const t of yungle.allTransfers()) console.log(t.title, t.downloadCount);

from yungle import Yungle

sent = Yungle().send(["render.mov"], to=["client@example.com"], message="Final cut")
print(sent["url"])

Both retry what is safe to retry, put an Idempotency-Key on every POST so a retry never makes a second copy, follow cursor pagination for you, and verify webhook signatures.

Webhooks

Get told instead of polling: transfer.ready, transfer.downloaded, transfer.expiring, transfer.expired, and on paid plans collection.file_uploaded. Each delivery is signed with HMAC-SHA256 and retried with backoff. No public URL? Leave it out and pull the events instead.

import { verifyWebhook } from 'yungle-client';
const ok = await verifyWebhook(rawBody, req.headers['yungle-signature'], process.env.YUNGLE_WEBHOOK_SECRET!);

Plans and limits

Every account can use the API, the CLI and the MCP server, the free plan included: transfers up to 10 GB, contacts, webhooks, and downloading any link. Collections and files that never expire come with a paid plan. The first 10 GB of API uploads each month are free, then €0.02/GB from prepaid credit. Pricing

Why Yungle

• In Europe, run by a European company. Your files are stored and served from EU infrastructure.
• Always encrypted. Every file gets its own key, and transfers can be end-to-end encrypted in the browser when you need it.
• Sustainable. Renewable hydropower, in a data centre with a PUE of 1.13. What that does and doesn't mean.

Not reachable from here: your vault and end-to-end encrypted transfers. Their keys are derived in your browser and never sent to Yungle, so no API can read them. See what the API can't do.

Contributing

pnpm install
pnpm typecheck && pnpm lint && pnpm test && pnpm build
pnpm contract   # check the clients against the live OpenAPI spec

This repository is where the clients are developed; the Yungle service itself is not open source. Issues and pull requests are welcome, see CONTRIBUTING.md. Security reports go through security.txt.

MIT