The fastest way to spot an economic shift is to watch who gets permission to spend money — and Mercury just handed the corporate card to non-humans.
The Summary
- Mercury launches virtual credit cards designed specifically for AI agents, complete with spend controls and audit trails for automated purchasing decisions
- The move responds to customers already issuing cards to agents manually — Mercury is formalizing what founders were already hacking together
- Mercury serves one in three U.S. startups, generates $650M+ in annualized revenue, and onboarded 2x more AI startup customers in 2025 vs. 2024
- This isn't speculative infrastructure — it's product-market fit forcing banking to evolve
The Signal
Mercury didn't wake up one morning and decide to build for agents. They watched their customers. Founders were already manually issuing virtual cards to their AI workers, treating software the same way they'd treat a junior employee who needs to buy cloud credits or API access. The bank run that followed Silicon Valley Bank's collapse in 2023 pushed $2 billion in deposits and 8,700 new customers into Mercury's arms. Those customers brought new behaviors with them.
CEO Immad Akhund tracks how customers actually use Mercury, and what he saw was clear: the composition of startup teams is changing. Not theoretically. Literally. Early-stage teams that used to be two founders and a handful of engineers now include AI agents as core team members. Not tools. Not automations in the background. Team members who need budgets.
"You can have a lot of control while having agents with some ability to spend."
The new AI agent cards solve a real infrastructure gap. When an agent needs to:
- Spin up compute resources on AWS or Azure
- Pay for API calls to other services
- Purchase datasets or subscriptions
- Handle recurring vendor payments
Someone has to authorize and track that spending. Mercury's solution includes audit trails specifically designed for non-human actors. You can set spending limits, review what the agent bought, and kill the card if something goes sideways. It's the same logic as giving a company card to a contractor, except the contractor is Claude or a custom agent built in-house.
The timing here matters. Mercury's AI startup customer base doubled year-over-year in 2025. These aren't crypto speculators or Web3 tourists. These are software companies building actual products with AI agents embedded in the workflow. They need banking infrastructure that matches their org chart. When your "employee" is an agent that works 24/7 and needs to make purchasing decisions while you sleep, a traditional corporate card approval flow breaks.
Mercury has been profitable on a GAAP basis for four years. They're not chasing trends. They're responding to what their customers are already doing. That's the signal. The startup economy has already moved. Banking is catching up.
The Implication
If you're building for the agent economy, watch where the rails get laid. Mercury formalizing agent cards means other financial infrastructure will follow. Expect expense management software, accounting tools, and procurement platforms to build agent-native features in the next 12 months.
For founders, this is permission to stop hacking workarounds. If your agent needs a budget, give it one. Track it like you'd track any other team member. The infrastructure is here. The question is whether you're building your company for the team composition of 2020 or 2026.