ScriptsJul 27, 2026·3 min read

DashBeam — Peer-to-Peer Encrypted File Transfer Without the Cloud

Send files of any size directly between devices with no cloud storage, no accounts, and no restrictions, using QUIC transport and end-to-end encryption.

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Ready-to-run agent install

This asset can be installed after the agent chooses its runtime, checks the plan, and runs the matching command.

Native · 98/100Policy: allow
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Any MCP/CLI agent
Kind
Skill
Install
Single
Trust
Trust: Established
Entrypoint
DashBeam
Direct install command
npx -y tokrepo@latest install c9073044-89bf-11f1-9bc6-00163e2b0d79 --target codex

Run after dry-run confirms the install plan.

Introduction

DashBeam is an open-source file transfer tool that sends files directly from one device to another without uploading to any cloud server. All transfers are end-to-end encrypted and require no user accounts. It supports desktop, mobile, CLI, and web interfaces.

What DashBeam Does

  • Transfers files peer-to-peer with no cloud intermediary or file size limits
  • Encrypts all data end-to-end using TLS 1.3 over the QUIC protocol
  • Verifies file integrity with BLAKE3 hashing
  • Supports resumable transfers that survive network interruptions
  • Works across desktop, mobile, CLI, and web clients

Architecture Overview

DashBeam uses a relay server for signaling and NAT traversal, but file data flows directly between peers whenever possible. The transport layer is built on QUIC for multiplexed, low-latency streaming. Each transfer session generates a unique code; both sender and receiver derive encryption keys from a shared secret tied to that code. The relay only sees encrypted traffic.

Self-Hosting & Configuration

  • Download the desktop app from dashbeam.app or install CLI via pip
  • Optionally self-host a relay server using the provided Docker image
  • Configure relay URL in client settings if using a self-hosted relay
  • No accounts, registration, or API keys required
  • Supports proxy and firewall-friendly fallback through the relay

Key Features

  • Zero-knowledge architecture: relay servers cannot read transferred data
  • Cross-platform: Windows, macOS, Linux, iOS, Android, and web
  • Resumable transfers with progress tracking
  • No file size limits or bandwidth throttling
  • Folder transfer with directory structure preservation

Comparison with Similar Tools

  • croc — CLI-only P2P transfer; DashBeam adds desktop, mobile, and web clients
  • Magic Wormhole — Python-based P2P transfer; DashBeam uses QUIC for better performance
  • Send (Firefox Send) — uploads to a server; DashBeam is direct peer-to-peer
  • LocalSend — LAN-only transfer; DashBeam works across the internet
  • Tailscale/WireGuard — VPN tunnels; DashBeam is purpose-built for one-off file sends

FAQ

Q: Do both parties need the app installed? A: The receiver can use the web interface at dashbeam.app without installing anything. Desktop and mobile apps are available for heavier use.

Q: Is there a file size limit? A: No. DashBeam streams data directly between peers, so transfer size is limited only by disk space.

Q: What happens if my connection drops mid-transfer? A: Transfers are resumable. Reconnect and the transfer picks up where it left off.

Q: Can I self-host the relay server? A: Yes. A Docker image is provided. Point your clients at your relay URL.

Sources

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