Red Cup Engineering
One catalog, five machine faces: MCP, A2A, ActivityPub, llms.txt and x402 discovery neighborhood
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One catalog, five machine faces: MCP, A2A, ActivityPub, llms.txt and x402 discovery
One 130-offer catalog compiles into x402 discovery, an MCP server, an A2A agent card, an ActivityPub outbox and llms.txt so agents find the same prices.