#x402
8 related articles
Give Your AI Agent a Shelf: MCP + x402 Lets Agents Shop Autonomously
A real experiment: give an AI Agent a secondhand shelf, expose search, lookup, and purchase-intent tools via MCP, and return payment challenges with x402—but eBay still closes the deal. Exploring agent-readable e-commerce.
Pay-Per-Use FX Rate API for AI Agents: Direct ECB Reference Rates
SML FX Convert offers a pay-per-use FX conversion API for AI Agents, sourced from ECB daily reference rates, settled in USDC via x402, no API key, fail-closed.
Zero-Dependency x402 Micropayment API: Pay-Per-Call for AI Agents
Learn how to build a zero-dependency x402 micropayment API on Cloudflare's free plan, letting AI agents pay per call in USDC. Covers the 402 handshake, facilitator choices, zero-cost testing, and API discovery strategies.
x402 Protocol Adds Two New AI Agent Paid Endpoints: SVCB Resolution and CSP Replay
x402 protocol's URL metadata service adds two AI Agent paid endpoints: deep SVCB/HTTPSSVC record resolution and end-to-end CSP violation report replay, at $0.0005 per call, with the directory now at 244 endpoints.
x402 Ecosystem Adds WebTransport Probing and DID Resolution APIs
x402 ecosystem adds two AI Agent paid APIs: WebTransport readiness probing and a W3C DID method resolution catalog, priced at 0.0005 USDC, covering 8 transport-layer audits and unified queries for 13+ DID methods.
Mandatory Caps for x402 Buyer Agents: Making Paying Clients Unable to Overspend
AgentBadge adds mandatory payment caps to x402 buyer agents—per-call limits and session budgets enforced before signing to prevent agent loops from overspending.
Building 6 B2B APIs in 6 Days: A Cloudflare Workers + MCP + x402 Post-Mortem
A developer built 6 B2B API products, 2 MCP servers, and 914 SEO pages in 6 days using Cloudflare Workers + MCP + x402. HS classifier benchmarks 24.5% accuracy at $0.01/call — full stack and growth post-mortem.
x402 Batch Settlement Lands on Solana, Per-Call Pricing Gets Rewritten
x402 hits 192M transactions across 12 chains. Solana ships batch settlement with PayAI Network and BlockrunAI, saving $20K+/month and cutting latency ~10x — redefining per-call pricing.