Uplink CLI

Share your local app with others for demos, testing, review, and quick feedback — without deploying.

Key features

• Expose any local port: Turn localhost:<port> into a public HTTPS URL like https://abc123.x.uplink.spot
• Agent-first: Works well with Cursor, Claude Code, Codex, Windsurf (and other agentic tools)
• Terminal-native: Start/stop tunnels and manage URLs from an interactive menu
• No browser required: Create an account + token from the CLI (uplink signup), then automate everything
• Open source CLI: Inspect, extend, and contribute

Why use Uplink

• Fastest way to share localhost: Great for “can you look at this?” moments
• Works great with agents: machine-readable --json, stable exit codes, and stdin token support
• Share links + optional permanent URLs: Permanent URLs are available if enabled on your account

Learn more at uplink.spot

Install

npm install -g uplink-cli
# or
npx uplink-cli --help

Authenticate (no browser)

uplink signup --json                     # creates account + token
# or interactive: uplink (Get Started)
export AGENTCLOUD_TOKEN=your-token-here  # save securely

Quick start (interactive)

uplink        # open menu

• Start Tunnel → pick or enter port → get URL (e.g., https://abc123.x.uplink.spot)
• My Tunnels → see status and permanent URL if set
• Create Permanent URL → pick tunnel → enter alias (if premium enabled)

Quick start (non-interactive)

# Create tunnel (any port: 3000, 8080, 5173, etc.)
echo "$AGENTCLOUD_TOKEN" | uplink --token-stdin tunnel create --port 3000 --json

# List tunnels
echo "$AGENTCLOUD_TOKEN" | uplink --token-stdin tunnel list --json

# Set alias (if enabled on account)
echo "$AGENTCLOUD_TOKEN" | uplink --token-stdin tunnel alias-set --id tun_xxx --alias myapp --json

Agent essentials

• --json: stdout = JSON only; stderr = logs/errors
• --token-stdin: read token once from stdin (avoid argv leaks)
• --api-base: override API host if needed
• Exit codes: 0 ok; 2 usage; 10 auth missing/invalid; 20 network; 30 server/unknown
  See docs/AGENTS.md for the full contract.

Key commands

• uplink menu — interactive UI
• uplink tunnel create --port <p> [--alias <a>] [--json]
• uplink tunnel list --json
• uplink tunnel alias-set --id <id> --alias <a> --json
• uplink tunnel alias-delete --id <id> --json
• uplink tunnel stats --id <id> --json
• uplink tunnel stop --id <id> --json
• uplink signup --json — create user + token (no auth)

Environment

export AGENTCLOUD_TOKEN=your-token
export AGENTCLOUD_API_BASE=https://api.uplink.spot
export TUNNEL_CTRL=tunnel.uplink.spot:7071
export TUNNEL_DOMAIN=x.uplink.spot

Troubleshooting

• “No running tunnel clients found” — make sure the tunnel client is still running; restart uplink and start a tunnel.
• Auth errors — verify AGENTCLOUD_TOKEN is set/exported; use --token-stdin.
• Relay errors — ensure TUNNEL_CTRL=tunnel.uplink.spot:7071.

Docs

• Menu reference: docs/MENU_STRUCTURE.md
• Agent guide: docs/AGENTS.md
• Open source CLI scope vs backend: docs/OPEN_SOURCE_CLI.md

License

MIT