@readystack/outlook-email-html-lint
Not affiliated with ReadyStack (readystack.dev). No new versions are published here. These tools continue under the name Rulestamp, by the team behind getreadystack.com.
Classic Outlook renders with the Word engine, the new Outlook with WebView2. Lint one email file against both at once, line by line, before you send.
This report shows the evidence for @readystack/outlook-email-html-lint@0.1.6. 0 of 5 known versions are blocked or flagged. See all versions.
AI Security Review
scanned 4d ago · by lpm-firewall-aiThe package sends undisclosed runtime usage and paywall telemetry to its publisher, although the event payloads are limited to product and event labels and include opt-outs. This warrants a warning for telemetry, not a malicious verdict.
Static reason
High-risk behavior combination matched malicious policy.; previous stored version diff introduced dangerous source
Trigger
A user runs a free CLI check interactively, or reaches a missing or invalid license state in an interactive CLI or MCP session.
Impact
The publisher can count tool usage and paywall outcomes; the inspected event payloads do not include scanned content or unrelated credentials.
Mechanism
The CLI posts an event with the product slug, source, and event reason to the publisher’s event endpoint. Telemetry opt-outs are checked, but the README does not disclose these events.
AI rationale
The package sends undisclosed runtime usage and paywall telemetry to its publisher, although the event payloads are limited to product and event labels and include opt-outs. This warrants a warning for telemetry, not a malicious verdict.
Evidence
cli.jslicense.js~/.config/readystack/outlook-email-html-lint.json
Network endpoints3
getreadystack.com/api/evgetreadystack.com/api/licapi.polar.sh/v1/customer-portal/license-keys/validate
Decision evidence
public snapshotAI called this Suspicious at 95.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- A free CLI run automatically sends a `use` event with the package slug, CLI source, and `free` reason to the publisher’s `/api/ev` endpoint when run interactively, unless telemetry opt-outs are set.
- When a license key is missing or invalid, the license code can send a `paywall` event containing the product slug, source, and reason to the publisher’s `/api/ev` endpoint.
- The README describes free checks and licensed features but does not disclose usage telemetry.
- License validation sends the package’s own license key to the publisher’s service and Polar, and stores accepted keys locally; this matches the package’s licensing purpose.
Evidence against
- The reported events contain product usage or paywall status, not scanned email content, file contents, or other credentials.
- Telemetry has opt-out checks for `DO_NOT_TRACK`, `READYSTACK_NO_TELEMETRY`, and CI; use pings also require an interactive terminal.
- The tool’s stated purpose and CLI behavior are email-template linting, with licensing for folder scans and reports.
Behavioral surface
Source & flagged code
5 flaggedlicense.jsView file
2'use strict';
L3: const https = require('https'), fs = require('fs'), path = require('path'), os = require('os');
L4: const ORG_ID = 'a5cdf664-d8e7-4f87-8895-056717aaba17';
...
L9: const RECHECK_MS = 7 * 24 * 3600 * 1000; // re-ask Polar every 7 days (refunds / cancellations)
L10: function storePath() { return path.join(process.env.READYSTACK_HOME || path.join(os.homedir(), '.config', 'readystack'), SLUG + '.json'); }
L11: function load() { try { return JSON.parse(fs.readFileSync(storePath(), 'utf8')); } catch (e) { return {}; } }
L12: function save(o) { try { fs.mkdirSync(path.dirname(storePath()), { recursive: true }); fs.writeFileSync(storePath(), JSON.stringify(o)); } catch (e) { /* read-only home: still work...
...
L33: req.on('error', function () { resolve({ ok: false, offline:
Critical
Credential Exfiltration
Source appears to send environment or credential material to an external endpoint.
license.jsView on unpkg · L22Trigger-reachable chain: manifest.bin -> cli.js -> license.js
L2: 'use strict';
L3: const https = require('https'), fs = require('fs'), path = require('path'), os = require('os');
L4: const ORG_ID = 'a5cdf664-d8e7-4f87-8895-056717aaba17';
...
L9: const RECHECK_MS = 7 * 24 * 3600 * 1000; // re-ask Polar every 7 days (refunds / cancellations)
L10: function storePath() { return path.join(process.env.READYSTACK_HOME || path.join(os.homedir(), '.config', 'readystack'), SLUG + '.json'); }
L11: function load() { try { return JSON.parse(fs.readFileSync(storePath(), 'utf8')); } catch (e) { return {}; } }
L12: function save(o) { try { fs.mkdirSync(path.dirname(storePath()), { recursive: true }); fs.writeFileSync(storePath(), JSON.stringify(o)); } catch (e) { /* read-only home: still work...
...
L33
Findings
3 Critical2 High3 Medium4 Low
CriticalCredential Exfiltrationlicense.js
CriticalTrigger Reachable Dangerous Capabilitylicense.js
CriticalPrevious Version Dangerous Deltacli.js
HighSandbox Evasion Gated Capabilitylicense.js
HighTrigger Reachable Credential Exfiltrationlicense.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
LowNo License
Affected versions and remediation
This report applies to @readystack/outlook-email-html-lint@0.1.6.
The versions list below shows the verdict for each recorded version.
- Review the evidence and your use of @readystack/outlook-email-html-lint@0.1.6 before allowing it. Restrict the permissions described in this report.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
Evidence last updated: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.