Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Open Codex Computer Use

👾 Open Computer Use — Open-Source Alternative to Codex Computer Use

Compatibility: Not stated.

Grade B

Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

Rescanned at commit 43eb4b53de7a.

SECRETS_PATH_UNCONFIRMED PERMISSION_SHELL_DECLARED SECRETS_ENV_READ OBFUSCATION_FILE_CAP_REACHED

Why this grade

  • SECRETS_PATH_UNCONFIRMED Low

    The Secrets check reports a credential or environment file, but no quoted line shows a recognisable path.

    scripts/node-repl/ocu-config.mjs, line 102 return `${key} = ${value} saved to ${file}${env[settings[key].env] !== undefined ? `\nWarning: ${settings[key].env} overrides this saved setting.` : ""}`;

  • PERMISSION_SHELL_DECLARED Note

    Runs shell commands, and the manifest or description says so.

    apps/OpenComputerUseLinux/main.go, line 617 cmd := exec.CommandContext(ctx, "python3", scriptPath, operationPath)

  • SECRETS_ENV_READ Note

    Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.

    scripts/node-repl/ocu-config.mjs, line 102 return `${key} = ${value} saved to ${file}${env[settings[key].env] !== undefined ? `\nWarning: ${settings[key].env} overrides this saved setting.` : ""}`;

  • OBFUSCATION_FILE_CAP_REACHED Note

    The 400 file cap was reached before every file was read.

    docs/releases/github/v0.2.1.md, line 1 ## What's Changed

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Note

    requests shell access. The manifest names this permission.

    PERMISSION_SHELL_DECLARED

    apps/OpenComputerUseLinux/main.go, line 617

    cmd := exec.CommandContext(ctx, "python3", scriptPath, operationPath)

    apps/OpenComputerUseWindows/main.go, line 667

    cmd := exec.CommandContext(ctx, "powershell.exe", "-NoProfile", "-NonInteractive", "-ExecutionPolicy", "Bypass", "-File", scriptPath, operationPath)

    docs/references/codex-computer-use-reverse-engineering/runtime-and-host-dependencies.md, line 37

    - `node` çš„ `child_process.spawn(..., stdio: ['pipe', 'pipe', 'pipe'])`

    Show more

    docs/references/codex-computer-use-reverse-engineering/runtime-and-host-dependencies.md, line 38

    - `python3` çš„ `subprocess.Popen(..., stdin=PIPE, stdout=PIPE, stderr=PIPE)`

    scripts/locked_use_report.py, line 177

    self.process = subprocess.Popen(["/usr/bin/log", "stream", "--level", "debug",

    scripts/locked_use_report.py, line 234

    result = subprocess.run(["/usr/bin/log", "show", "--last", f"{math.ceil(time.time()-started)+2}s",

    scripts/prepare-macos-keychain-profile.py, line 46

    decoded = subprocess.run(["/usr/bin/security", "cms", "-D", "-i", args.profile],

    scripts/run-locked-use-native-validation.py, line 27

    self.process = subprocess.Popen([str(binary), "mcp"], env=environment,

  • Install and update

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Pass

    No network call found.

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_UNCONFIRMED

    scripts/node-repl/ocu-config.mjs, line 102

    return `${key} = ${value} saved to ${file}${env[settings[key].env] !== undefined ? `\nWarning: ${settings[key].env} overrides this saved setting.` : ""}`;

    scripts/node-repl/ocu-config.test.mjs, line 79

    const run = spawnSync(process.execPath, [launcher, "config", "set", "image.format", "jpg"], { env: { ...process.env, ...env }, encoding: "utf8" });

    scripts/node-repl/ocu-config.test.mjs, line 28

    const report = inspectConfig({ ...env, OPEN_COMPUTER_USE_IMAGE_MAX_DIMENSION: "800" });

    Show more

    scripts/node-repl/ocu-config.test.mjs, line 31

    assert.equal(inspectConfig({ ...env, OPEN_COMPUTER_USE_IMAGE_MAX_DIMENSION: "NaN" }).values["image.maxLongEdgePixels"], 640);

    scripts/node-repl/ocu-config.test.mjs, line 102

    const report = inspectConfig({ ...env, OPEN_COMPUTER_USE_IMAGE_MAX_BYTES: "1", OPEN_COMPUTER_USE_IMAGE_MIN_SCALE: "0.01" });

    scripts/npm/publish-packages.mjs, line 162

    if (npmPackageVersionExists(packageName, version, npmEnvCandidates[0].env)) {

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Note

    the file cap was reached before every file was read.

    OBFUSCATION_FILE_CAP_REACHED

    docs/releases/github/v0.2.1.md, line 1

    ## What's Changed

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

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Note

Hygiene check of commit 43eb4b53de7a. requests shell access. The manifest names this permission. reads a credential or environment file. the file cap was reached before every file was read.

Date and source

Date checked:

View source

github.com

Commit graded: 43eb4b53de7a15b3f99ec2c9922bedeb95602266

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Read how this letter is chosen