Check Signature
Verify Android APK signing certificates and compare signer fingerprints with apksigner
Install
$ agentstack add skill-jason0404-jason-android-marketplace-check-signature ✓ scanned · ✓ verified — works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
About
Verify signing for one or more .apk files.
Workflow
- Confirm supplied files exist and are APKs.
- Locate
apksignercross-platform through PATH or Android SDK build-tools locations. - Invoke
android-apk-signing-verifier. - Use
apksigner verify --print-certswhen available. - Report verification status, signer count and certificate SHA-256 digest where returned.
- When comparing APKs, state whether the confirmed certificate fingerprints match.
- Generate an HTML report only when requested.
Safety
Never request or expose keystore passwords or private signing material. Do not claim which Play Console key a certificate represents unless that evidence was separately provided.
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: jason0404
- Source: jason0404/Jason-Android-Marketplace
- License: MIT
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.