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Governed USDC wallet for AI agents — policy gates, spending caps, and Ed25519-signed receipts.
About
Governed USDC wallet for AI agents — policy gates, spending caps, and Ed25519-signed receipts.
Security Report
This is a demonstration client for the dingdawg-agent-wallet MCP server package. The code is well-structured, contains no hardcoded secrets, and properly uses environment-based package invocation via StdioClientTransport. No malicious patterns detected. Minor concerns around input validation in the demo scripts and lack of error handling for edge cases do not significantly impact the score given the educational nature of the code. Supply chain analysis found 2 known vulnerabilities in dependencies (0 critical, 2 high severity). Package verification found 1 issue (1 critical, 0 high severity).
4 files analyzed · 7 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
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Unverified package source
We couldn't verify that the installable package matches the reviewed source code. Proceed with caution.
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-dingdawg-agent-wallet": {
"args": [
"-y",
"agent-wallet-demo"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
dingdawg-agent-wallet — live demo
Shows governed agent wallet enforcement in action: allow, deny, step-up, allowlist — all in 5 seconds. No API keys. No blockchain required.
What it demonstrates
▶ provision_wallet
wallet_id: demo-wallet-abc123
daily_cap: $200 USDC
per_call_cap: $100 USDC
▶ governed_spend — $25 USDC (allowed)
✓ AUTHORIZED
receipt_id: 6aba84a6-...
daily_remaining: $175 USDC
next_step: wallet.sendToken({ assetId: "usdc", amount: "25", destination: "0xVendorABC123" })
▶ governed_spend — $150 USDC (exceeds per-call cap)
✗ DENIED
reason: Amount 150 USDC exceeds per-call cap 100 USDC
receipt_id: cd7a7aa8-... (denial is logged too)
▶ governed_spend — $75 USDC (step-up required)
⚠ STEP-UP REQUIRED
reason: Amount 75 USDC > step-up threshold 50 USDC — MFA required
fix: Pass approval_token from your authorization flow
▶ governed_spend — unknown recipient (not in allowlist)
✗ DENIED
reason: Recipient 0xUnknownAddress not in allowlist
▶ wallet_audit
chain_verified: true ✓
total_receipts: 5
[17:02:18] DENY $10 USDC governed_spend
[17:02:18] DENY $75 USDC governed_spend
[17:02:18] DENY $150 USDC governed_spend
[17:02:18] ALLOW $25 USDC governed_spend
[17:02:18] ALLOW provision_wallet
Every action — allow AND deny — produces an immutable receipt. chain_verified: true means the full chain is tamper-evident — any modification is detectable.
Run it
git clone https://github.com/DingDawg/agent-wallet-demo
cd agent-wallet-demo
npm install
node demo.mjs
The package
dingdawg-agent-wallet — 5 MCP tools that wrap any agent wallet with policy enforcement and an immutable audit trail.
npm install dingdawg-agent-wallet
| Tool | What it does |
|---|---|
provision_wallet | Create wallet with spend policy (daily cap, per-call cap, allowlist) |
governed_spend | Policy check → authorize → immutable receipt |
governed_receive | Accept payment with tamper-evident receipt |
wallet_policy | Update limits and allowlists at runtime |
wallet_audit | Full receipt chain — chain_verified: true |
Coinbase AgentKit gives your agent a wallet. DingDawg gives it a conscience.
Why this matters
AI agents can now hold USDC and spend autonomously. The infrastructure exists. What doesn't: who enforces what the agent is allowed to spend, on what, for whom — and proves it happened correctly.
governed_spendauthorizes then returns the exactagentkit_callSDK method to execute on-chain- Every denial is logged — you can prove what your agent didn't do
chain_verified: truemeans the audit trail is tamper-evident — any modification is detectable
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