x402 Random Number Seller

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* Debug script: see what x402.browserbase.com actually returns for a 402 response.\n */\nconst response = await fetch(\"https://x402.browserbase.com/browser/session/create\", {\n method: \"POST\",\n headers: { \"Content-Type\": \"application/json\" },\n body: JSON.stringify({ duration: 5 }),\n});\n\nconsole.log(\"Status:\", response.status);\nconsole.log(\"\\n=== HEADERS ===\");\nfor (const [key, value] of response.headers.entries()) {\n console.log(`${key}: ${value}`);\n}\n\nconsole.log(\"\\n=== BODY ===\");\nconst text = await response.text();\nconsole.log(text);\n\ntry {\n const json = JSON.parse(text);\n console.log(\"\\n=== PARSED JSON ===\");\n console.log(JSON.stringify(json, null, 2));\n console.log(\"\\nx402Version:\", json.x402Version);\n console.log(\"typeof x402Version:\", typeof json.x402Version);\n console.log(\"has x402Version:\", \"x402Version\" in json);\n} catch (e) {\n console.log(\"Not valid JSON\");\n}\n","createdAt",["D",1775336510974],"branchVersion","branchId","df2e7966-1a41-11f1-b341-42dde27851f2","id","df2e18a4-1a41-11f1-b341-42dde27851f2","x402-playground",["D",1772900564463],"deletedAt","legacyEnvVars",false,"privacy","public","httpPrivacy","description","Playing with internet-native payment 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@jsxImportSource npm:hono@4/jsx */\nimport { Hono } from \"npm:hono@4\";\nimport { paymentMiddleware, x402ResourceServer } from \"npm:@x402/hono\";\nimport { ExactEvmScheme } from \"npm:@x402/evm/exact/server\";\nimport { HTTPFacilitatorClient } from \"npm:@x402/core/server\";\nimport { getAddress } from \"./lib/x402.ts\";\n\n// --- Config ---\nconst network = \"eip155:8453\"; // Base mainnet\n\n// --- x402 seller middleware ---\nconst facilitator = new HTTPFacilitatorClient({\n url: \"https://facilitator.xpay.sh\",\n});\nconst resourceServer = new x402ResourceServer(facilitator)\n .register(network, new ExactEvmScheme());\n\nconst app = new Hono();\napp.onError((err) => Promise.reject(err));\n\n// Receiving wallet (always wallet 1)\nconst payTo = getAddress(\"1\");\n\napp.use(\n paymentMiddleware(\n {\n \"GET /api/random\": {\n accepts: {\n scheme: \"exact\",\n price: \"$0.001\",\n network,\n payTo,\n },\n description: \"A premium random number\",\n mimeType: \"application/json\",\n },\n },\n resourceServer,\n ),\n);\n\n// --- Homepage ---\napp.get(\"/\", (c) => {\n const endpoint = new URL(\"/api/random\", c.req.url).href;\n\n return c.html(\n \n \n x402 Random Number Seller\n

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