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Pack v3 introduces X402 protocol for payable AI agent API calls

The developer of Pack v3 has introduced a new layer for AI agent services that goes beyond simple discovery, enabling agents to make payable calls to APIs. This new system utilizes the X402 protocol, which handles identity, pricing, spending caps, and receipt verification for API interactions. The Pack v3 includes a discovery manifest at /.well-known/x402.json, which declares accepted currencies like USD via Stripe/Creem and USDC on Base, along with priced paths and spending limits. A Cloudflare Worker is also provided to manage the payment layer, returning HTTP 402 challenges and verifying receipts. AI

IMPACT Enables direct monetization of AI agent API calls, potentially accelerating the development of payable AI services.

RANK_REASON This is a product update for a specific tool (Pack v3) that introduces a new protocol (X402) for AI agent interactions, rather than a core AI model release or significant industry-wide event.

Read on dev.to — LLM tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Pack v3 introduces X402 protocol for payable AI agent API calls

COVERAGE [1]

  1. dev.to — LLM tag TIER_1 English(EN) · Egor ·

    Most sites speak llms.txt now. Almost none speak x402.

    <p>A friend in the agent-infra space (DDG Agent Services, 16k followers, they build this for a living) replied to one of my posts this week with a take that landed hard:</p> <blockquote> <p>right that discovery moved to machine-readable files. but llms.txt only makes you findable…