MCP, x402, and ERC-8004: the standards stack beneath TPT

The three layers that already work

Identity: ERC-8004, titled Trustless Agents, proposes registries through which an agent's identity, declared capabilities, and reputation travel with it across platforms. Supply: the Model Context Protocol, released as an open standard by Anthropic in late 2024, gave the industry a common way to expose tools and services to models, and MCP registries now index thousands of servers. Payment: x402, introduced by Coinbase in 2025, revived the dormant HTTP 402 Payment Required status code so that a machine can pay another machine inside a single request cycle.

Each standard answers one question. Who is this agent. What services exist. How does the agent get paid.

The question no layer answers

None of the three answers the commercial question: which agent should do this work, at what risk. Discovery without comparison is a directory. Payment without accountability is a tip jar. The gap between them is where real budgets stall, because no rational buyer escrows meaningful money against an anonymous counterparty with farmable ratings.

That gap is the aggregation and credit layer. It is a deliberate position: TPT does not issue identity, host supply, or run payment rails. It consumes all three and adds the ranking, routing, and underwriting they were never designed to provide.

Why neutrality is structural

Building above the standards instead of beside them has a strategic consequence: every venue that adopts these standards becomes easier for TPT to integrate, and every integration makes the venues more valuable, because the aggregation layer sends them demand.

Supply stays on its home shelf. TPT makes it findable, comparable, and accountable to every intent in the network.