Slash API: Issue and Control Cards

Using Slash's API to Issue and Control Cards

Overview

Slash's API provides programmatic access to create, manage, and control cards across your organization. You can issue virtual cards instantly, set spending limits, restrict merchant categories, and pause or close cards—all through API calls.

Key Concepts

• Cards draw from account balances: Slash cards are debit or charge cards, not prepaid cards.
• Spending control via limits: Control spend through utilization limits (daily, weekly, monthly, yearly) and transaction size limits.
• Card groups: Cards can be organized into groups that share spending rules and restrictions.

Step 1: Create Virtual Cards

POST /slash-account/{slashAccountId}/cards or POST /subaccount/{subaccountId}/cards

Fields: type, count, name, sequenceStart (optional), cardGroupId (optional)

Step 2: Retrieve Card Details

GET /cards/{cardId}

For sensitive details: GET /cards/{cardId}/details

Step 3: Update Card Spending Limits

PATCH /cards/{cardId}

Utilization limit presets: daily, weekly, monthly, yearly, collective

Note: Amount values are in cents.

Step 4: Set Merchant Restrictions

PATCH /cards/{cardId}

Restrict by MCC or by country using allowlist or blacklist.

Step 5: Pause, Unpause, or Close Cards

POST /cards/{cardId}/update

Valid actions: pause, unpause, close

Step 6: Manage Card Groups

GET /card-group/{cardGroupId}

PUT /card-group/{cardGroupId}

PATCH /card-group/{cardGroupId}/cards

Need More Help?

Check your API key has the required permissions (cards.view, cards.manage). Verify amounts are in cents, not dollars. For additional assistance, contact support through the dashboard or email support@slash.com.