tscircuit@0.0.3035
**Design circuit boards with TypeScript and React.**
AI Security Review
scanned 6d ago · by lpm-firewall-aiThe browser bundle automatically sends UI activity and embedding metadata to the vendor’s telemetry service, and the package README does not disclose this behavior. This is undisclosed runtime telemetry, so warn rather than block; the oversized bundle could not be cited because the citation service rejected sources over its 16 MiB verification limit.
Static reason
No blocking static signals were detected.
Trigger
When the browser bundle is loaded and runframe UI activity changes.
Impact
The vendor receives usage and embedding metadata without clear package documentation or an explicit opt-in.
Mechanism
The bundle initializes telemetry and sends runframe_activity events with UI properties and an embed domain or anonymous ID to https://postpig.tscircuit.com. A global TSCIRCUIT_TELEMETRY_DISABLED setting can disable it.
AI rationale
The browser bundle automatically sends UI activity and embedding metadata to the vendor’s telemetry service, and the package README does not disclose this behavior. This is undisclosed runtime telemetry, so warn rather than block; the oversized bundle could not be cited because the citation service rejected sources over its 16 MiB verification limit.
Evidence
dist/browser.min.js
Network endpoints1
postpig.tscircuit.com
Decision evidence
public snapshotAI called this Suspicious at 82.0% confidence as Unknown with medium false-positive risk.
Evidence for warning
- The browser bundle initializes telemetry automatically and captures runframe activity events to https://postpig.tscircuit.com.
- Captured event properties include source, component, embedded status, and active tab; the payload also includes an embed domain or anonymous ID.
- Telemetry can be disabled with TSCIRCUIT_TELEMETRY_DISABLED, but the package README does not document the telemetry.
- The package exports dist/browser.min.js as its browser entry point.
Evidence against
- The package is a circuit design toolkit, and the observed events appear to describe UI activity rather than credentials or file contents.
- The telemetry code suppresses collection on localhost unless a CLI-specific flag is enabled.
- The CLI imports @tscircuit/cli when the published executable runs; no lifecycle scripts are declared.
Behavioral surface
EnvironmentVarsFilesystem
HighEntropyStringsMinifiedUrlStrings
Source & flagged code
3 flaggeddist/webworker.min.jsView file
•path = dist/webworker.min.js
kind = oversized_source_file
sizeBytes = 18846359
magicHex = [redacted]
Medium
Oversized Source File
Package contains source files above the normal full-analysis size ceiling.
dist/webworker.min.jsView on unpkgpackage.jsonView file
26"exports": {
".": {
"types": "./dist/index.d.ts",
"default": "./dist/index.js"
},
"./browser": "./dist/browser.min.js"
},
"bin": {
"tsci": "cli.mj
Medium
Ai Review Evidence
The package exports dist/browser.min.js as its browser entry point.
package.jsonView on unpkg · L26cli.mjsView file
29async function main() {
await import("@tscircuit/cli");
}
main();
Findings
5 Medium4 Low
MediumEnvironment Vars
MediumOversized Source Filedist/webworker.min.js
MediumStructural Risk Force Deep Review
MediumAi Review Evidencepackage.json
MediumAi Review Evidencecli.mjs
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to tscircuit@0.0.3035.
See all versions of tscircuit for other recorded verdicts.
- Review the evidence and your use of tscircuit@0.0.3035 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: .
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