Claude Code, Skill
Mastro Connect
Mastro Connect, a skill listed in the PlugVet directory.
Compatibility: Not stated.
Grade C
One Medium finding. Read the report before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
PERMISSION_SHELL_UNDECLARED
Why this grade
- PERMISSION_SHELL_UNDECLARED Medium
Runs shell commands that the manifest or description does not mention.
packages/cli/src/commands/validate.ts, line 180
if (op.command) commands.set(op.command, (commands.get(op.command) ?? 0) + 1);
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
Concern
requests shell access. No manifest field names shell or command execution.
PERMISSION_SHELL_UNDECLARED
packages/cli/src/commands/validate.ts, line 180
if (op.command) commands.set(op.command, (commands.get(op.command) ?? 0) + 1);
Install and update
Note
The docs document an installer that pipes a download into a shell.
INSTALL_DOCUMENTED_INSTALLER
bin/mastro.cjs, line 58
"Install it once: curl -fsSL https://bun.sh/install | bash (or: brew install oven-sh/bun/bun)\n" +
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
extension/background.js, line 314
const res = await fetch(`${s.receiverBaseUrl}/api/browser-auth/captures/${s.sessionId}`, {
extension/background.js, line 334
await fetch(`${s.receiverBaseUrl}/api/browser-auth/client-status/${s.sessionId}`, {
extension/lib/proxy.js, line 40
const res = await fetch(`${POLL_BASE}/proxy/poll?v=${PROTOCOL_VERSION}`);
Show more
extension/lib/proxy.js, line 70
await fetch(`${POLL_BASE}/proxy/response/${request.id}`, {
extension/lib/proxy.js, line 193
const res = await fetch(req.url, {
packages/cli/src/provider-fetch.ts, line 315
return await fetch(url, {
packages/sdk/src/browser-transport.ts, line 7
* long-polls the server), and the extension executes `fetch()` in a logged-in
packages/sdk/src/connector.ts, line 459
// -- metadata fetch (for x-mastro-resolve) --------------------------------
Secrets
Concern
reads a credential or environment file.
SECRETS_ENV_READ SECRETS_PATH_DOTENV
packages/cli/src/provider-fetch.ts, line 334
cachedToken = process.env.GITHUB_TOKEN || process.env.GH_TOKEN || ghCliToken() || null;
.gitignore, line 21
# env
.gitignore, line 22
.env
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 3897d896814f. requests shell access. No manifest field names shell or command execution. The docs document an installer that pipes a download into a shell. can reach a host that is not written as a fixed address. reads a credential or environment file.
Date and source
Date checked:
github.com
Commit graded: 3897d896814ff724f853819d7d24690919c6fe55
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