protogrid

Search / io.github.carlosbravoa/fcvm

fcvm

L0· runs locally

Disposable Firecracker microVM sandboxes for agents: run code, snapshot, fork. Needs Linux with KVM.

v0.7.0 · active · repository · website · descriptor JSON · versions

Runs on your machine: something must execute the package.Only local packages are published (npm, PyPI, OCI, …). The registry never executes them, so tools are unknown until you run it.
Quality–not scored
Trust96of 100
Packages1
Tools seen0

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "fcvm": {
      "command": "uvx",
      "args": [
        "fcvm-mcp==0.7.0"
      ]
    }
  }
}
claude mcp add fcvm -- uvx fcvm-mcp==0.7.0
[mcp_servers.fcvm]
command = "uvx"
args = ["fcvm-mcp==0.7.0"]
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "fcvm": {
      "type": "local",
      "command": [
        "uvx",
        "fcvm-mcp==0.7.0"
      ],
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "fcvm": {
      "command": "uvx",
      "args": [
        "fcvm-mcp==0.7.0"
      ]
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=fcvm&config=eyJjb21tYW5kIjoidXZ4IiwiYXJncyI6WyJmY3ZtLW1jcD09MC43LjAiXX0%3D"
}
{
  "servers": {
    "fcvm": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "fcvm-mcp==0.7.0"
      ]
    }
  }
}
{
  "mcpServers": {
    "fcvm": {
      "command": "uvx",
      "args": [
        "fcvm-mcp==0.7.0"
      ]
    }
  }
}
extensions:
  "fcvm":
    enabled: true
    name: "fcvm"
    type: stdio
    cmd: "uvx"
    args:
      - "fcvm-mcp==0.7.0"
    timeout: 300

This is a local package: the command runs on your machine.

Quality – / 100not scored

Not scored: fewer than three checks apply, usually because no remote answered a credential-free probe or the server is a local package.

protocoln/a · weight 25
  • n/a
    protocol.modern, protocol.stateless, protocol.transport, protocol.list_ttlno remote answered a protocol handshake (not probed yet, unreachable, or local-only)
authorizationn/a · weight 15
  • n/a
    auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
  • n/a
    auth.secret_in_urlno templated URL
tool hygienen/a · weight 30
  • n/a
    tools.descriptions, tools.description_length, tools.schemas, tools.annotations, tools.directory_hints, tools.token_cost, tools.api_dumptool list unknown (behind auth, not probed, or empty)
stabilityn/a · weight 15
  • n/a
    stability.changes, stability.rug_pulltool list unknown
dependencies100 · weight 15
  • pass
    deps.known_vulnsno known advisory in 1 resolved packages
  • n/a
    deps.mcp_sdk_versionthe official MCP SDK is not in the dependency graph
  • pass
    deps.resolvable[email protected] resolved: 1 packages

Tool list unknown · checked 2026-10-20 00:54 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 96 / 100

provenance90
livenessn/a
freshness100
hygiene100

+repository +namespace-matches-repo +website ~liveness-unmeasured +updated-8d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Dependencies

[email protected] PyPI0 dependencies, resolved · advisories checked 2026-10-19

No known advisory affects this dependency graph.

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0. The graph is what a clean install of this version resolves today; nothing was installed or run. How it is checked.

Endpoints

packageregistryversionruntimesecrets
fcvm-mcppypi0.7.0uvx

Tools (0)

No tools observed. Local packages are never executed by the registry.

Schemas: list_tools.

Similar MCP servers

Official server.json
{
  "name": "io.github.carlosbravoa/fcvm",
  "title": "fcvm",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "version": "0.7.0",
  "packages": [
    {
      "version": "0.7.0",
      "transport": {
        "type": "stdio"
      },
      "identifier": "fcvm-mcp",
      "runtimeHint": "uvx",
      "registryType": "pypi",
      "registryBaseUrl": "https://pypi.org",
      "environmentVariables": [
        {
          "name": "FCVM_MCP_NETWORK",
          "description": "Pin the network policy for every sandbox: none, or an allowlist such as @pypi,@github"
        },
        {
          "name": "FCVM_MCP_TEMPLATE",
          "description": "Template used when the agent names neither an image nor a template, e.g. python-sandbox"
        },
        {
          "name": "FCVM_MCP_TTL",
          "description": "Stop sandboxes this long after boot unless the agent sets a lifetime, e.g. 4h"
        },
        {
          "name": "FCVM_MCP_IDLE_STOP",
          "description": "Stop sandboxes that saw no exec or file operation for this long, e.g. 30m"
        },
        {
          "name": "FCVM_MCP_SECRETS",
          "description": "Names of environment variables passed into every sandbox as secrets, e.g. GITHUB_TOKEN"
        },
        {
          "name": "FCVM_MCP_FORWARD",
          "description": "Host credentials relayed into every sandbox: ssh-agent, git"
        },
        {
          "name": "FCVM_MCP_CACHE",
          "description": "1: restricted sandboxes fetch pip and npm packages through the host's mirror"
        },
        {
          "name": "FCVM_MCP_JAIL",
          "description": "0: don't run sandboxes under the Firecracker jailer even when it is set up"
        },
        {
          "name": "FCVM_BIN",
          "description": "Path of the fcvm command, when it isn't on PATH, in ~/.local/bin or in /usr/local/bin"
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/carlosbravoa/fcvm",
    "source": "github",
    "subfolder": "sdk/mcp"
  },
  "websiteUrl": "https://github.com/carlosbravoa/fcvm/blob/main/docs/agents.md",
  "description": "Disposable Firecracker microVM sandboxes for agents: run code, snapshot, fork. Needs Linux with KVM."
}