Claude Code, Plugin
Prowl Skill
Real-world market data for your agents. One MCP endpoint, 444 market data tools.
Compatibility: Not stated.
Grade B
Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
PERMISSION_DELETE_FILES NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST SECRETS_PATH_DOTENV SECRETS_ENV_READ
Why this grade
- PERMISSION_DELETE_FILES Low
Contains a call that can delete files.
bin/prowl-skill.js, line 358
fs.rmSync(dest, { recursive: true, force: true }); - NETWORK_NO_FIXED_HOST Low
Makes a network call whose host is not written as a fixed address.
scripts/check-contract.js, line 208
fetch(url, { method: 'POST', headers: { ...base, ...extra }, body: JSON.stringify(body), redirect: 'follow' }); - NETWORK_UNNAMED_HOST Low
Calls a fixed host that the description does not name.
scripts/check-contract.js, line 208
fetch(url, { method: 'POST', headers: { ...base, ...extra }, body: JSON.stringify(body), redirect: 'follow' }); - SECRETS_PATH_DOTENV Low
Mentions a .env file.
.gitignore, line 4
.env - SECRETS_ENV_READ Note
Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.
bin/prowl-skill.js, line 249
const key = (process.env.PROWL_API_KEY || readStdin() || '').trim();
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
can delete files.
PERMISSION_DELETE_FILES
bin/prowl-skill.js, line 358
fs.rmSync(dest, { recursive: true, force: true });
plugins/prowl/lib/state.js, line 225
if (fs.statSync(f).isDirectory()) fs.rmdirSync(f); else fs.unlinkSync(f);
scripts/check-cli.js, line 184
fs.rmSync(dir, { recursive: true, force: true });
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. can reach api.github.com. The description does not name that host.
NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST
scripts/check-contract.js, line 208
fetch(url, { method: 'POST', headers: { ...base, ...extra }, body: JSON.stringify(body), redirect: 'follow' });
scripts/check-tool-count.js, line 168
const res = await fetch(`https://api.github.com/repos/${slug}`, {
scripts/check-tool-count.js, line 178
const res = await fetch(SOURCE, { redirect: 'follow' });
Secrets
Concern
reads a credential or environment file.
SECRETS_ENV_READ SECRETS_PATH_DOTENV
bin/prowl-skill.js, line 249
const key = (process.env.PROWL_API_KEY || readStdin() || '').trim();
.gitignore, line 3
.DS_Store
.gitignore, line 4
.env
Show more
README.md, line 154
`prowl_...` keys are billing-bearing - every metered tool call debits your USD wallet. Treat the key as a secret. Token files and `.env` are git-ignored; never commit a key to a pu
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 34346327c1cc. can delete files. can reach a host that is not written as a fixed address. can reach api.github.com. The description does not name that host. reads a credential or environment file.
Date and source
Date checked:
github.com
Commit graded: 34346327c1cc396a88e71e9a2c92c9e92b0f7fe3
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