Yafl MCP

Name: Yafl MCP
Author: yafldev

by yafldevversion 0.1.6i★ –iRuns on your computer

Registry namedev.yafl/mcp

Install

Overview

Description from the maker (original English)

Agent-first E2EE file transfer over MCP: move files between machines in one tool call, gone in 24h.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other
You need to fill in: YAFL_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: YAFL_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "yafl": {
      "command": "npx",
      "args": [
        "-y",
        "@yafldev/mcp"
      ],
      "env": {
        "YAFL_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add yafl --env YAFL_API_KEY=your-value -- npx -y @yafldev/mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "yafl": {
      "command": "npx",
      "args": [
        "-y",
        "@yafldev/mcp"
      ],
      "env": {
        "YAFL_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "yafl": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@yafldev/mcp"
      ],
      "env": {
        "YAFL_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

YAFL_API_KEY secret env
API key for authenticated transfers. Optional — omit and run `yafl login` (device flow) instead.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain yafl.dev (the registry checks domain ownership)
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 32599 servers in this category
Published to the registry more recently than 21% of the other 32599 servers in this category
Basic checks equal to or better than 100% of the other 32599 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Yafl MCP safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: YAFL_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.6) reached the registry 3 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Zendesk

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Spec Driven Development

by formulahendry

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

Runs on your computer★ 440MITUpdated 14 months ago

Install

Remote Desktop Commander

by desktop-commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated yesterday

Install

Zendesk

by pipeworx-io

Zendesk MCP Pack — tickets, users, organizations via OAuth.

Computer or cloudUpdated today

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

YAFL — Yet Another File Layer (MCP server + CLI)

Your AI agent moves files between machines with one MCP call — encrypted client-side, links gone in 24 hours.

This repository is the open-source MCP server and CLI client for YAFL. Your agents (Claude Desktop, Claude Code, Cursor, any MCP client — including agents on remote VPSes) hand files across environments — laptop ↔ VPS, agent ↔ agent — with a single tool call, instead of a human dragging files into WeTransfer and copying links around. Files are encrypted on your machine before they leave it; the service only ever sees ciphertext.

The client is open source so you can audit exactly what touches your files. The YAFL service lives at yafl.dev.

Install

Add YAFL to your MCP client config:

"mcpServers": { "yafl": { "command": "npx", "args": ["-y", "@yafldev/mcp"], "env": { "YAFL_API_KEY": " " } } } }

Works in Claude Desktop, Claude Code, Cursor, and any MCP client. Claude Desktop users can install the one-click .mcpb bundle. Prefer the CLI:

curl -fsSL https://yafl.dev/install.sh | sh

No API key is required to start. On the first tool call the server returns a guided error pointing to yafl login — an RFC 8628 device flow: the agent shows a short code, you approve it in a browser, and the agent holds its own revocable key. Built for headless boxes. Runs via npx (Node.js 18+); no global install needed.

Tools

Tool	Call	What it does
`upload_file`	`{ path, password?, oneTime? }`	Encrypts client-side, uploads ciphertext, returns the share link. Zips a directory first. Optional password layer; optional one-time link that burns after the first download.
`download_file`	`{ url, destDir?, password? }`	Fetches, decrypts, writes the file to local disk.
`get_status`	`{ url }`	Checks liveness and remaining TTL — no bytes downloaded.
`list_files`	`{ limit? }`	The caller's own transfers, metadata only.
`delete_file`	`{ id \	url }`	Revoke one of your transfers before expiry.
`email_link`	`{ link, recipient }`	Email a share link straight to a recipient — the agent-to-human handoff without leaving the session.
`login`	device flow	Authorize this agent (RFC 8628); it holds its own revocable key.

Errors are stable and machine-readable — your agent gets expired or not_found, not a mystery 404.

How encryption works

The file is encrypted with a fresh AES-256-GCM key before upload. The key travels only in the share URL's #fragment — browsers never send fragments to servers, so it is never transmitted to, logged by, or stored on any server. An optional link password adds a second derived layer the server never sees either, and a one-time link self-destructs after the first successful download. File bytes go directly to storage via pre-signed URLs; the app server never handles them, and storage only ever receives ciphertext. Access stops at 24 hours. Free tier: 100 MB per file.

What happens if an agent's key leaks

The API key is not the decryption key. If a machine is compromised and its YAFL key is stolen, the attacker can at most see ciphertext metadata for that key's own transfers — file contents stay unreadable, because decryption keys exist only in the links you exchanged. Revoke the key and move on. This is why the recommended setup is one key per agent, per machine — keys are named and individually revocable.

License

MIT — see LICENSE.

Yafl MCP

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Zendesk

README from the maker

YAFL — Yet Another File Layer (MCP server + CLI)

Install

Tools

How encryption works

What happens if an agent's key leaks

Links

License