
The A2A (Agent-to-Agent) Protocol: How Agents Delegate to Each Other, and Where Payments Plug In
- whackur
- Blockchain
- August 27, 2026
A2A (Agent2Agent) standardizes how to delegate work to an independently operated agent and receive progress and results. A client reads an Agent Card for capabilities, endpoints and authentication requirements, then tracks longer work as a Task. MCP connects each agent to tools and data; separate protocols such as AP2 and x402 handle purchase authorization and payment settlement. Collaborating over A2A requires neither a blockchain nor a wallet. A2A specification, division of responsibilities with MCP
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Apify x402 and Coinbase Wallets, in Depth: How Agents Buy Web Automation Tools Directly
- whackur
- Blockchain
- July 5, 2026
Apify, the web scraping platform, announced x402 support: AI agents can now run more than 20,000 Apify Actors by paying with USDC on Base, with no Apify account and no API key. Apify frames the prior x402 ecosystem as roughly 2,000 endpoints, so by its own count this integration expanded the paid-tool surface by about 10x.
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Agentic Payments in June 2026: x402, UCP, and MPP Implementation Progress
- whackur
- Blockchain
- June 30, 2026
Agentic payments in June 2026 moved from “can an agent pay” toward “who authorized the payment, how is it verified, and how is it traced.” The major open protocols (x402, UCP, MPP/pay.sh, and ACP) each had meaningful implementation changes. All figures and commit details below come from GitHub API, PyPI, and npm registry checks.
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AI x Blockchain in 2026: Bittensor, DePIN, and Agent Finance
- whackur
- Blockchain
- June 30, 2026
“AI plus blockchain” spent most of the early 2020s as a marketing phrase. By mid-2026, it has organized into four distinct layers, each with its own competitive dynamics. Which projects have staying power, and what are the actual evaluation criteria at this point?
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