x402 is already agent-callable at the protocol level, so no MCP wrapper is needed for payments. The MCP server exposes the read side of the same trust layer (query verified attributes, get schema, get circuit, get generator, get proof status) for agents in MCP-native environments (Claude Desktop, Cursor, etc.) that want to read from Lemma without a custom REST integration.
Two surfaces, one trust layer: x402 : payment rail + ZK proof bundle in PAYMENT-RESPONSE MCP : read interface for MCP-native agents