Grades are a hygiene check, not a security guarantee.

MCP, MCP server

6DuckLearn MCP

Connect agents to 6DuckLearn memory, approvals, and runtime control.

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 b83b5fcc07ac, unchanged since the check below.

NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV SECRETS_ENV_READ

Why this grade

  • NETWORK_NO_FIXED_HOST Low

    Makes a network call whose host is not written as a fixed address.

    packages/connector/src/hermesApiServerClient.ts, line 664 const response = await fetch(url, {

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    .gitignore, line 5 .env

  • SECRETS_ENV_READ Note

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

    packages/connector/src/oauthLogin.ts, line 135 const tokenId = process.env.SIXDUCK_OAUTH_TOKEN_ID || process.env.DUCK_OAUTH_TOKEN_ID || process.env.SIXDUCK_TOKEN_ID || process.env.DUCK_TOKEN_ID;

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

    Pass

    No shell or command execution found, and no extra permission was declared.

  • 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

    packages/connector/src/hermesApiServerClient.ts, line 664

    const response = await fetch(url, {

    packages/connector/src/oauthLogin.ts, line 57

    const response = await fetch(`${input.publicBaseUrl}/oauth/mcp/register`, {

    packages/connector/src/oauthLogin.ts, line 95

    const response = await fetch(`${input.publicBaseUrl}/oauth/mcp/token`, {

    Show more

    packages/connector/src/signedApiClient.ts, line 500

    return fetch(url, {

    packages/connector/src/signedApiClient.ts, line 527

    const response = await fetch(this.config.oauthTokenEndpoint as string, {

    scripts/hosted-smoke.mjs, line 19

    const authResponse = await fetch(AUTH_METADATA_URL, {

    scripts/hosted-smoke.mjs, line 33

    const resourceResponse = await fetch(RESOURCE_METADATA_URL, {

    scripts/hosted-smoke.mjs, line 46

    const response = await fetch(MCP_URL, {

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    packages/connector/src/oauthLogin.ts, line 135

    const tokenId = process.env.SIXDUCK_OAUTH_TOKEN_ID || process.env.DUCK_OAUTH_TOKEN_ID || process.env.SIXDUCK_TOKEN_ID || process.env.DUCK_TOKEN_ID;

    packages/connector/src/profileCommands.ts, line 149

    const tokenId = configOAuthTokenId ?? configTokenId ?? process.env.SIXDUCK_TOKEN_ID ?? process.env.DUCK_TOKEN_ID;

    .gitignore, line 5

    .env

    Show more

    .gitignore, line 4

    .DS_Store

    .gitignore, line 7

    !.env.example

  • Agent instructions

    Pass

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

  • Obfuscation

    Pass

    No encoded or minified payload found.

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Note

Hygiene check of commit b83b5fcc07ac. can reach a host that is not written as a fixed address. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: b83b5fcc07ac0e561f31d6e5d8f56c7c5b6d7a0b

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