Charge higher prices
Buyers see the green verification badge. Trust closes deals faster and justifies premium pricing.
You built a skill that clients pay for.
Now make sure it stays yours after the sale.
pip install agentverif-sign
You sell a skill → the buyer gets the code →
they copy it, modify it, or resell it cheaper.
Your recurring revenue disappears
and your reputation takes the hit.
When the buyer runs your skill, Claude automatically checks the signature and shows:
Sign your skill
from agentverif_sign.langchain_tool import sign_tool
# Sign before shipping
result = sign_tool.invoke({
"zip_path": "./my-claude-skill.zip"
})
# ✅ SIGNED — agentverif certified
# License: AC-84F2-91AB
# Verify: https://verify.agentverif.com/?id=AC-84F2-91AB
Verify before executing
from agentverif_sign.langchain_tool import verify_tool
# Verify before execution
result = verify_tool.invoke({
"license_id": "AC-84F2-91AB"
})
# ✅ VERIFIED — Safe to run
# 🔴 TAMPERED — Do NOT execute
Also available via CLI and GitHub Action → github-action docs
Buyers see the green verification badge. Trust closes deals faster and justifies premium pricing.
The certificate proves what you shipped. No more “this isn’t what I bought” conversations.
If someone modifies your skill after delivery, Claude catches it automatically and blocks execution.
If your skill gets redistributed without permission, kill the license in one command. The copy stops working.
The agentverif skill is live on ClawHub right now. Install once and your agent automatically scans, signs, and verifies — without leaving your workflow.
Install via ClawHub
npx clawhub@latest install agentverif
CLI, GitHub Action, or web UI. Takes under 30 seconds from install to signed ZIP.
agentverif-sign signA unique License ID is issued. SIGNATURE.json is injected into your ZIP automatically.
Claude verifies via MCP before execution. If the skill was tampered with, it blocks automatically.
sha256 hash-lockedOn mobile the steps stack vertically.
No. The verification is a fast local + MCP call. Most users see zero noticeable delay.
Yes. The badge and License ID work across Claude Desktop, Claude.ai, and other MCP setups.
Tamper detection catches it and Claude blocks the modified version before it runs.
No credit card. Just feedback.
Zero risk — if it doesn’t protect your revenue, you lose nothing.