CPYNET — Online Clipboard for Copy-Paste Sharing via curl

CPYNET
TREN
On Windows PowerShell, type curl.exe instead of the curl alias — otherwise long pastes get truncated in the console.

Set up a persistent alias (once)

curl -s https://llmtag.com/alias -o ~/.cpy.sh && bash -n ~/.cpy.sh && (grep -qxF 'source ~/.cpy.sh' ~/.bashrc || echo 'source ~/.cpy.sh' >> ~/.bashrc) && source ~/.cpy.sh || echo "install failed, try again"

Then just: command | cpy — prints the 6-digit code and a ready-to-run curl command on two lines. To protect it with a password: command | cpy -password=xxx

Send from the terminal

command | curl --data-binary @- https://llmtag.com/

The response is a bare, ready-to-use link.

Read from the terminal

curl "your-link"

Read once, then permanently deleted.

Protect with a password

Fill in the password box below — the link automatically comes with ?p=password.

Why CPYNET?

Built for environments where clipboard sharing isn't an option: remote servers over SSH, machines where clipboard access is locked down by policy, or separate machines/containers/virtual desktops with no shared clipboard between them. CPYNET never touches the OS clipboard at all - everything moves as plain text over curl - so it can be used confidently even where clipboard is fully disabled.

Features

  • One-time read: permanently deleted the moment it's read
  • Auto-deletes when the timer runs out, even if nobody reads it
  • Password-protected sharing: AES-256-GCM + PBKDF2, the server only ever holds plaintext momentarily
  • Live notification: your tab knows the instant it's read (SSE)
  • Per-IP rate limiting: guards against code-guessing and brute-force scans

Security

The server never executes, evaluates, or pipes what you paste into a shell - it only stores it and hands it back exactly as received. No third-party dependencies (pure Go standard library), no filesystem access with user data, no outbound requests.

⚠️ Disclaimer: this doesn't remove the risk of piping something into a shell (curl ... | bash) without reading it first - that's a universal risk for any sharing tool, not specific to this one. Never run a command you haven't inspected from a source you don't trust.

Limits

Max size: 2 MB · Code: 6 digits · Auto-delete: 2m

CPYNET v1.0 — single file, single Go binary — no external database or dependencies.

Made by Emin Buyuk