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flujo-app

mcp-sandbox-computer-vm-for-ai

by flujo-app

Server Configuration

Describes the environment variables required to run the server.

NameRequiredDescriptionDefault
FLY_TOKENNoFly API token for the Fly Machines backend. Alternative to FLY_API_TOKEN.
FLY_REGIONNoRegion for newly created Fly Machines.
E2B_API_KEYNoE2B API key for the E2B backend.
FLY_APP_NAMENoFly App that owns sandbox Machines.
FLY_API_TOKENNoFly API token for the Fly Machines backend. Alternative to FLY_TOKEN.
MODAL_TOKEN_IDNoModal token ID for the Modal backend, overriding default authentication.
MODAL_TOKEN_SECRETNoModal token secret for the Modal backend, overriding default authentication.
KILNTAINERS_AUTH_TOKENNoBearer token for /mcp HTTP endpoint. Set to a random hex string to protect the MCP server.

Capabilities

Features and capabilities supported by this server

CapabilityDetails
tools
{
  "listChanged": false
}
prompts
{
  "listChanged": false
}
resources
{
  "subscribe": false,
  "listChanged": false
}
extensions
{
  "io.modelcontextprotocol/ui": {
    "mimeTypes": [
      "text/html;profile=mcp-app"
    ]
  }
}
experimental
{}

Tools

Functions exposed to the LLM to take actions

NameDescription
sandbox_execA

Execute a shell command in an isolated Debian Linux sandbox. Commands run in bash. Each call is independent — no state (shell variables, working directory) persists between calls (however filesystem does persist). Use the working_directory parameter or chain commands with && to control execution context.

To write files or pass data without shell escaping, use the stdin parameter (e.g., command="cat > file.txt" with content in stdin). Commands time out after 120 seconds by default (override with the timeout parameter for long-running operations).

computer_dashboardA

Open the interactive MCP App dashboard for listing computers, running terminal commands, restarting, factory-resetting, and deleting.

computer_listA

List all sandbox computers managed by the selected backend.

computer_createA

Create a temporary or permanent sandbox computer. If computer_id is omitted, a readable random slug is returned.

computer_restartA

Restart a computer without erasing its writable filesystem.

computer_factory_resetA

Erase a computer's writable filesystem and recreate it from the base image.

computer_deleteA

Permanently delete a computer and all of its writable state.

Prompts

Interactive templates invoked by user choice

NameDescription

No prompts

Resources

Contextual data attached and managed by the client

NameDescription
Sandbox Computer DashboardInteractive lifecycle and terminal dashboard for sandbox computers.

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