Putting x402, ERC-8004, and Kite together, a simple and coarse understanding: ERC-8004 addresses "Who is this, and can I trust them?" x402 addresses "How to pay per use?" What Kite aims to do is "to run these two things on the same execution and settlement foundation." For example, if you have an investment assistant agent and want to collaborate with a tax agent, how to proceed: 1️⃣ First, check the identity registry according to ERC-8004, to see its capability description and service endpoints (business card). 2️⃣ Then, look at its reputation score and past verification records (reviews + verifications). 3️⃣ After deciding to engage, only on the execution and settlement layer like Kite can you turn "what can be done, how much it costs, permission boundaries, and result receipts" into executable rules (rather than just verbal commitments).