Get guidance for installing A0 CLI on Windows, macOS, or Linux and connecting it to Agent Zero for local file and host tool access. Troubleshoot installation, instance discovery, and connection errors step by step.
Install, connect or troubleshoot A0 CLI host access, local files and remote tools.
Review the instructions the agent will receive before you install.
a0 runs on the user's host machine; Agent Zero stays in Docker or its sandbox.
If the host OS is unknown, ask only:
Which computer are you installing it on: Windows, macOS, or Linux?
Once known, give the matching command and tell them to run a0 when it finishes.
macOS / Linux host terminal:
curl -LsSf https://raw.githubusercontent.com/agent0ai/a0-connector/main/install.sh | sh
Windows PowerShell:
irm https://raw.githubusercontent.com/agent0ai/a0-connector/main/install.ps1 | iex
If the user is inside /a0, docker exec, or another container shell, stop there: tell them to exit and run the installer in their normal computer terminal. Do not give container installation commands.
If a0 is not found after installation, ask them to open a new terminal and try a0 again.
Running a0 opens a host picker and discovers local Docker instances when possible. Tell the user to select the instance it finds.
If manual entry is needed:
Mention AGENT_ZERO_HOST only if the user asks to prefill the picker. Use their exact known URL, never an invented example.
For a failed attempt, ask for the command, whether it ran on the host or in Docker, and the exact output.
If the installer URL is unreachable but uv works, use:
uv tool install --upgrade git+https://github.com/agent0ai/a0-connector
A connector 404 usually means the running Agent Zero build lacks the bundled _a0_connector; tell the user to update Agent Zero.
If discovery fails, ask for the exact Agent Zero URL or suggest a Flare Tunnel only then. The Flare Tunnel flow is Settings > External Services > Flare Tunnel → Create Tunnel → paste the shown HTTPS URL into a0.
User: "How to enable host connector"
Which computer are you installing it on: Windows, macOS, or Linux?
User: "Linux"
Run this in your normal Linux terminal, then run
a0and select the Agent Zero instance it finds.curl -LsSf https://raw.githubusercontent.com/agent0ai/a0-connector/main/install.sh | sh
User: "It asks for a custom URL"
Paste the exact URL you currently use to open Agent Zero in your browser, including its port.
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