Mastercard Launches Agent Pay Protocol for AI Using Polygon and Stablecoins

Mastercard Launches Agent Pay Protocol for AI Using Polygon and Stablecoins

Mastercard introduced Agent Pay for AI, a new protocol enabling artificial intelligence agents to transact with one another and settle micropayments using traditional payment rails and stablecoins. The system stores agent permissions on Polygon and was developed with partners including Coinbase and Ripple.

Oct 18, 2026, 12:02 AM1 min read

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Protocol Architecture and Partners

Mastercard launched Agent Pay for AI, a protocol designed to allow artificial intelligence agents to independently execute payments and micropayments across multiple settlement channels. The system stores permission records—the authorities humans grant to their AI agents—on Polygon, an Ethereum Layer 2 network, according to a Fortune report from June 10. Mastercard developed the protocol in collaboration with cryptocurrency firms Coinbase and Ripple, according to reporting by Decrypt.

Multi-Rail Settlement Approach

Agent Pay supports settlement through traditional payment infrastructure alongside blockchain-based stablecoins. Agents can settle transactions using Mastercard's existing card and bank account networks as well as stablecoin transfers, giving enterprises and developers flexibility in how autonomous systems execute payments. The design treats AI agents as entities capable of holding permissions and executing transactions within parameters set by human operators.

Implications for Machine-to-Machine Commerce

The protocol addresses a gap in infrastructure for autonomous systems that need to pay for services independently—such as an AI agent purchasing computing resources or data feeds required for its operation. By anchoring agent permissions to a public blockchain rather than a centralized database, Mastercard introduced a decentralized mechanism for verifying what transactions each agent is authorized to conduct, reducing reliance on a single source of truth for permission records.

Why It Matters

For Traders

Stablecoin infrastructure adoption by major payments processors signals sustained institutional demand and may reduce volatility concerns around on-chain settlement rails.

For Investors

A major card network integrating blockchain-stored permissions legitimizes blockchain as infrastructure for enterprise automation, not just speculation.

For Builders

Mastercard's use of Polygon for permission storage demonstrates Layer 2 viability for enterprise workloads; builders can expect similar patterns from other large payment networks.

This article is for information only and is not financial advice. Read the full disclaimer.

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