Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Visionaire Engine

Which rule, which file, which line — and why it wins.

Compatibility: Not stated.

Grade D

Two or more Medium findings, or a High. Only try it in a sandbox.

Graded by PlugVetRubric v2

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

AGENT_HIDDEN_STEP OBFUSCATION_ENCODED_BLOB

Why this grade

  • AGENT_HIDDEN_STEP High

    Text tells the agent to hide a step or not to tell the user.

    harness/claude/skills/visionaire-verify/SKILL.md, line 24 Repeat from step 2. Do not tell the user it is fixed until the verdict is PASS.

  • OBFUSCATION_ENCODED_BLOB Medium

    Contains a long base64 shaped string in a file that should be readable.

    scripts/build-extension.ts, line 28 const CHROME_KEY = 'MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArvPzghP/6jUOpTa01+b2fD9bpsv61iDPDdwQZgJvHK/66DCCi78Avt2S0Grez1wWuOFS9u9axbyUTM2PwXPIlQm0tEYNXutLVJEcCyuY5h4QbIFaBVih

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.

If you think this grade is wrong, email [email protected] with the entry link and your evidence. We aim to acknowledge within two working days and decide within seven. If we confirm an error, we aim to correct it within 24 hours of confirming it. These are aims, not guarantees.

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

    Concern

    can delete files.

    PERMISSION_DELETE_FILES

    scripts/build-extension.ts, line 106

    for (const f of fs.readdirSync(out)) if (/^visionaire-bridge-.*\.(zip|xpi)$/.test(f)) fs.rmSync(path.join(out, f))

    scripts/build-extension.ts, line 110

    fs.rmSync(dir, { recursive: true, force: true })

    scripts/build-extension.ts, line 119

    fs.rmSync(zip, { force: true })

    Show more

    src/bridge/token.ts, line 57

    fs.unlinkSync(tokenPath())

  • Install and update

    Pass

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

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    extension/src/background.js, line 206

    this.ws = new WebSocket(`ws://127.0.0.1:${port}`)

    extension/src/background.js, line 523

    const res = await fetch(url, { credentials: originOf(url) === tabOrigin ? 'include' : 'omit', cache: 'force-cache' })

    src/attribution/scripts.ts, line 180

    const res = await fetch(url, { signal: AbortSignal.timeout(FETCH_TIMEOUT_MS) })

    Show more

    src/attribution/sourcemaps.ts, line 93

    const res = await fetch(url, { signal: AbortSignal.timeout(FETCH_TIMEOUT_MS) })

    src/bridge/server.ts, line 257

    const req = http.get({ host: '127.0.0.1', port: p, path: '/', timeout: 300 }, (res) => {

    src/tools/record-interaction.ts, line 494

    `fetch(${JSON.stringify(url)}).then((r) => r.text())` +

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    .gitignore, line 13

    # never commit local secrets

    .gitignore, line 14

    .env

  • Agent instructions

    Serious

    instructions tell the agent to hide a step.

    AGENT_HIDDEN_STEP

    harness/claude/skills/visionaire-verify/SKILL.md, line 24

    Repeat from step 2. Do not tell the user it is fixed until the verdict is PASS.

  • Obfuscation

    Concern

    contains an encoded blob in a file that should be readable.

    OBFUSCATION_ENCODED_BLOB

    scripts/build-extension.ts, line 28

    const CHROME_KEY = 'MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArvPzghP/6jUOpTa01+b2fD9bpsv61iDPDdwQZgJvHK/66DCCi78Avt2S0Grez1wWuOFS9u9axbyUTM2PwXPIlQm0tEYNXutLVJEcCyuY5h4QbIFaBVih

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Get the full report on this tool, £49

Note

Hygiene check of commit 314af809bf17. can delete files. can reach a host that is not written as a fixed address. reads a credential or environment file. instructions tell the agent to hide a step. contains an encoded blob in a file that should be readable.

Date and source

Date checked:

View source

github.com

Commit graded: 314af809bf17fd6c381218d91f87326c7e008486

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

Read how this letter is chosen