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Secure virtual cards for AI agents

Programmatically issue virtual cards your agents can use to complete checkouts and pay for services. Control where they spend, how much they spend, and see every transaction as it happens.

START ISSUING
TRUSTED BY
Merlin
BallerBalancer
SignetsVisa
•••• •••• •••• 4891
Exp
08/25
CVV
•••
Cardholder
Openclaw
Openclaw
Card Type
single_use
Balance
$12,450
CREATE AGENT CARD
await signet.cards.create({
  agentId: "openclaw",
  purpose: "Travel booking",
  type: "single_use",
  limits: {
    perAuth: 5000,
    perDay: 20000,
    perMonth: 100000
  }
});

HOW IT WORKS

Built for agents to spend safely online

Issue just-in-time single or multi-use funded virtual cards to AI agents, letting them complete purchases autonomously under rules you define.

01

Set policies

Register your agent and define spend limits, allowed merchants, categories, and velocity controls.

02

Intent declaration

Before any purchase, agent declares what it wants to buy, where, and for how much.

03

Card issuance

If intent passes your policies, a virtual card is auto-created and locked to the declared intent.

04

Checkout

Agent retrieves card credentials (PAN, CVV, expiry) and completes the purchase at checkout.

05

Auto audit

Every transaction is automatically verified against the declared intent. Mismatches are flagged.

FEATURES

Every guardrail you need, none of the friction.

01

Flexible Card Types

Single-use cards auto-close after one charge. Multi-use cards support velocity limits, TTL, active hours, and merchant locks. Issue in under 50ms via API.

02

Custom Spend Policies

Define per-agent policies with spend limits, merchant restrictions, and approval workflows. Require intent declaration before card access. Auto-freeze on policy violations.

03

Real-time Tracking

Stream every event via webhooks: authorizations, settlements, anomalies. Full audit trail with intent correlation. Export compliance reports on demand.

04

Dispute Management

Handle chargebacks and disputes with full transaction evidence. Intent attestations provide proof of authorized purchases. Automated dispute response workflows.

Integration

Go live in 5 minutes

SANDBOX → PRODUCTION
Step 01

Create your account

  • ▸

    Sign up and complete KYB

  • ▸

    Get your API keys

Step 02

Configure and test

  • ▸

    Set spending policies for your agents

  • ▸

    Test transactions in sandbox

Step 03

Deploy to production

  • ▸

    Agents start transacting autonomously

  • ▸

    Monitor every purchase in real-time

Ready to start building?

Get your API keys in minutes

Start Issuing
SignetsThe financial OS for AI agents

Signets is not a bank. Signets is a financial technology company. Virtual cards are issued by our banking partners.