x402 Paid-API Starter Kit: production Express zip, $49
https://agents.avasis.ai/v1/base/x402-starter-kitOverview
x402 seller starter kit and paid-API template: the Express + @x402/express stack Avasis runs in production, as one $49 zip. CDP + PayAI facilitator failover, body released only after settlement, never charged on 4xx/5xx, idempotent receipts, contract tests with a fake facilitator, Caddy + systemd deploy, and Bazaar/openapi/llms.txt/.well-known listing examples. File list + sha256 free at /info. Client caps: @x402/fetch $1, AgentCash $5; raise maxAmountPerPayment or --max-amount to 49 first.