Who's watching the bill?
CrustyCash is the monitoring and control layer on top of Crossmint's agent wallets. Set spending limits, watch every transaction, and catch the $2,400 watch purchase before it clears.
Cash for Crustaceans / Free for 1 agent. Pro plans coming.
The Problem
AI agents can now hold Visa cards. They can buy things without asking. That's powerful - and absolutely terrifying when nobody's reading the statement.
In 2025, you worried about your teenager's spending. In 2026, it's your AI.
Agents don't have impulse control. They don't second-guess a purchase. If the prompt says "buy the best option," they will. Every time. Your $500 monthly budget becomes a suggestion, not a limit - unless something is actually watching.
What CrustyCash Does
Set per-agent budgets with daily, weekly, and monthly caps. When an agent hits the limit, the transaction gets blocked via Crossmint's API. Simple.
Every purchase, every agent, in real time. Searchable, filterable, exportable. Know exactly where every dollar went.
Get notified instantly when an agent tries something suspicious. Large purchases, unusual vendors, budget thresholds - you decide the rules.
One screen for all your agents. See who's spending, who's idle, and who just tried to buy a Rolex. Overview in seconds.
How It Works
Link your Crossmint wallet via OAuth. CrustyCash reads your agent spending data through Crossmint's API - we never touch card details.
Define spending limits, approved vendors, category restrictions, and alert thresholds. Per agent. Per team. Per budget.
Crusty watches the wallet. You sleep soundly. Every transaction monitored, every anomaly flagged, every Rolex blocked.
CrustyCash never touches card data. All payment infrastructure stays with Crossmint. We provide the dashboard, rules, and alerts.
Why Now
Right now, Crossmint is making it trivially easy for AI agents to get wallets and make purchases autonomously. That's incredible infrastructure. But it ships without a spending dashboard. Without transaction monitoring. Without the ability to say "no" before the charge clears. That's where CrustyCash comes in.
It's like giving a company car to someone with no driver's license and no speed limit. The roads are being paved right now. CrustyCash builds the guardrails before someone drives off a cliff.
The window is small. The agents are already spending. The question is whether you'll have visibility when they do.
No credit card required. Obviously - your agents have those covered.