AP2 vs MCP
Last verified 2026-05-31Short answer: AP2 and MCP are not competitors. MCP, the Model Context Protocol (Anthropic, 25 November 2024), is the context layer that connects AI agents to tools and data; it carries no payments. AP2, the Agent Payments Protocol (Google, 16 September 2025), is a payment-agnostic framework to authorize agent-led payments, explicitly designed as an extension of MCP and the A2A protocol. In a typical stack, MCP provides connectivity and AP2 adds the payment-authorization layer on top.
Filter standards:
| Criterion | AP2 | MCP |
|---|---|---|
| Author / steward | Google (60+ orgs) | Anthropic, now Linux Foundation (AAIF) |
| Announced | 16 Sep 2025 | 25 Nov 2024 |
| Open-source status | Open specification (public GitHub) | Open source, MIT |
| What it is | Agent payments framework | Agent-to-tool/data context layer |
| Payment type | Payment-agnostic (cards, stablecoins, bank transfers) | None (not a payment protocol) |
| Transport | Extension of A2A and MCP | JSON-RPC 2.0 (stdio, HTTP) |
| Primary use | Authorize agent-led payments across platforms | Connect agents to tools and data |
| Notable adoption | Mastercard, PayPal, Amex, Adyen, Coinbase | Claude, Cursor, Copilot, Gemini, VS Code, ChatGPT |
Table last verified .
Frequently asked questions
Is AP2 a replacement for MCP?
No. AP2 is designed as an extension of MCP and the A2A protocol; they operate at different layers.
Does MCP handle payments?
No. MCP is the tool and context layer; payment protocols such as AP2, ACP and x402 connect to or extend it.
Who maintains AP2 and MCP?
AP2 is led by Google with 60+ organizations. MCP was created by Anthropic and donated to the Linux Foundation’s Agentic AI Foundation on 9 December 2025.