Does your agent's payment tool charge twice when it retries? Fire N concurrent calls at your MCP server and find out. Free, MIT.
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Aug 17, 2026 - Python
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double-charge
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Finds Stripe payments that went through but never finished in Craft Commerce, checks them with Stripe and completes the orders.
reconciliation stripe craftcms craft-plugin craft-commerce stripe-payments 3d-secure stripe-webhooks payment-reconciliation abandoned-carts checkout-recovery double-charge missing-orders unpaid-orders
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Sep 28, 2026 - PHP
Stop your AI agent from charging, booking or sending twice.
mcp fault-injection chaos-engineering exactly-once idempotency browser-agent computer-use agent-testing double-charge
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Oct 31, 2026 - TypeScript
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