Documentation Index
Fetch the complete documentation index at: /llms.txt
Use this file to discover all available pages before exploring further.
MCP tool that returns a public tunnel URL for a port on an agent’s VM so coding agents can share dev servers and previews with humans.
murmur url port in the CLI.
This tool is only available on VMs. It requires the MURMUR_WORKFLOW_ID environment variable to be set, which is automatically configured on agent VMs.
| Name | Type | Required | Description |
|---|---|---|---|
port | integer | yes | TCP port number (1-65535). The port must be listening on the VM. |
{
"port": 3000
}
https://port-a1b2c3d4-3000.murmur.dev
{
"port": 8080
}
| Code | Meaning | What to do |
|---|---|---|
INVALID_ARGUMENT | Port is outside the valid range (1-65535). | Use a valid port number. |
FAILED_PRECONDITION | MURMUR_WORKFLOW_ID not set — tool must run on a VM. | This tool is VM-only. It cannot be used from the CLI or off-VM MCP sessions. |
INTERNAL | Port proxy not configured (public_url missing). | Contact your administrator. |
murmur url port — equivalent CLI commandupload — upload a static file instead of sharing a live portagent_url — get the dashboard URL for an agent