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{
  "mcpServers": {
    "umbriel": {
      "command": "bunx",
      "args": [
        "umbriel"
      ],
      "env": {
        "UMBRIEL_PROFILE": "safe"
      }
    }
  }
}

claude mcp add umbriel -e "UMBRIEL_PROFILE=safe" -- bunx umbriel

[mcp_servers.umbriel]
command = "bunx"
args = ["umbriel"]
env = { "UMBRIEL_PROFILE" = "safe" }

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "umbriel": {
      "type": "local",
      "command": [
        "bunx",
        "umbriel"
      ],
      "enabled": true,
      "environment": {
        "UMBRIEL_PROFILE": "safe"
      }
    }
  }
}

{
  "mcpServers": {
    "umbriel": {
      "command": "bunx",
      "args": [
        "umbriel"
      ],
      "env": {
        "UMBRIEL_PROFILE": "safe"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=umbriel&config=eyJjb21tYW5kIjoiYnVueCIsImFyZ3MiOlsidW1icmllbCJdLCJlbnYiOnsiVU1CUklFTF9QUk9GSUxFIjoic2FmZSJ9fQ%3D%3D"
}

{
  "servers": {
    "umbriel": {
      "type": "stdio",
      "command": "bunx",
      "args": [
        "umbriel"
      ],
      "env": {
        "UMBRIEL_PROFILE": "safe"
      }
    }
  }
}

{
  "mcpServers": {
    "umbriel": {
      "command": "bunx",
      "args": [
        "umbriel"
      ],
      "env": {
        "UMBRIEL_PROFILE": "safe"
      }
    }
  }
}

extensions:
  "umbriel":
    enabled: true
    name: "umbriel"
    type: stdio
    cmd: "bunx"
    args:
      - "umbriel"
    envs:
      "UMBRIEL_PROFILE": "safe"
    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 17 resolved packages
n/a
deps.mcp_sdk_versionthe official MCP SDK is not in the dependency graph
pass
deps.resolvable[email protected] resolved: 17 packages

Tool list unknown · checked 2026-10-20 02:01 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 81 / 100

provenance80

livenessn/a

freshness65

hygiene100

+repository +namespace-matches-repo ~liveness-unmeasured ~updated-115d-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] npm16 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

package	registry	version	runtime	secrets
`umbriel`	npm	1.14.0	bunx

Tools (0)

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

Schemas: list_tools.

Similar MCP servers

More from io.github.ObscuritySRL

Official server.json

{
  "name": "io.github.ObscuritySRL/umbriel",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "version": "1.14.0",
  "packages": [
    {
      "version": "1.14.0",
      "transport": {
        "type": "stdio"
      },
      "identifier": "umbriel",
      "runtimeHint": "bunx",
      "registryType": "npm",
      "environmentVariables": [
        {
          "name": "UMBRIEL_PROFILE",
          "format": "string",
          "default": "safe",
          "description": "Capability profile: 'readonly' (inspect/read only), 'safe' (read + input + window — default), or 'full' (also os + fs tools)."
        },
        {
          "name": "UMBRIEL_OS",
          "format": "string",
          "description": "Set to '1' to allow the 'os' tools (launch_app/run_program/open_path, kill_process, manage_process, control_service, set_env, registry_get/registry_list/registry_set) AND the 'fs' tools (read_file/write_file/list_dir/stat_path/make_dir/copy_file/move_file/delete_file) regardless of profile."
        },
        {
          "name": "UMBRIEL_ALLOW",
          "format": "string",
          "description": "Comma-separated tool names or categories to additionally allow on top of the profile."
        },
        {
          "name": "UMBRIEL_DENY",
          "format": "string",
          "description": "Comma-separated tool names or categories to deny, overriding the profile and UMBRIEL_ALLOW."
        },
        {
          "name": "UMBRIEL_CURSOR",
          "format": "string",
          "description": "Set to 'never' to forbid the real-cursor fallback entirely (strictly cursor-free). By default clicks/drags are cursor-free but fall back to the real hardware cursor when no cursor-free path exists."
        },
        {
          "name": "UMBRIEL_FS_ROOT",
          "format": "string",
          "description": "Sandbox root directory that the fs-category file tools (read_file/write_file/list_dir/stat_path/make_dir/copy_file/move_file/delete_file) are confined to when fs tools are enabled; open_path's path argument is honored too."
        },
        {
          "name": "UMBRIEL_TRACE",
          "format": "string",
          "description": "File path to journal every mutating tool call as JSON Lines (tool, category, masked args, ok, observation); secret-bearing args and values are redacted. Unset = no trace."
        },
        {
          "name": "UMBRIEL_FFI_TRACE",
          "format": "string",
          "description": "File path to a flush-before-call diagnostic journal of every COM vcall (slot, this-pointer, arg count). Each line is written and flushed to the OS BEFORE the native call, so after an uncatchable crash the last line names the faulting call. Has per-call overhead; unset = off. For debugging native faults only."
        },
        {
          "name": "UMBRIEL_AUDIT",
          "format": "string",
          "description": "Controls the default-on stderr audit of mutating tool calls. 'off' is the explicit opt-out (reported at startup); 'verbose' also audits reads."
        },
        {
          "name": "UMBRIEL_REDACT",
          "format": "string",
          "description": "Credential masking (default on). 'off' opts out; a regex value overrides the built-in secret shapes masked in clipboard/env/registry reads and the trace journal."
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/ObscuritySRL/umbriel",
    "source": "github"
  },
  "description": "See and drive a whole Windows machine from Bun — apps, input, screen, OCR, registry, OS — via MCP."
}