test_charge - Agentcard

Connect to https://mcp.agentcard.sh/mcp with your organization credential (client_id + client_secret, or the org access token). Behavior: destructive.

What it does

Sandbox only: simulate a merchant charging a test card, driving the exact settlement a real charge does — authorization, clearing, the one-time-use auto-close, and the same webhooks (transaction.authorized, transaction.cleared, card.closed). Use it to prove an integration end to end without real money.

Inputs

Field	Type	Description
`card_id` (required)	string	The sandbox card id
`amount_cents`	number	Charge amount in cents (default: $6.75 capped at the card balance)
`merchant`	string	Merchant descriptor (default “COFFEE SHOP #42 SAN FRANCISCO”)

Returns

Field	Type	Description
`message` (required)	string	Human-readable outcome.
`paymentId`	string	The settled payment id.
`cardStatus`	string	Post-charge card status (CLOSED — cards are one-time-use).
`events`	array	Webhook events this charge emitted.

Example call

{
  "tool": "test_charge",
  "arguments": {
    "card_id": "\u2026"
  }
}