x402 Random Number Seller

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* Probe x402 APIs - trying confirmed endpoints from docs/examples\n */\n\nconst apis = [\n // The Coinbase x402 example resource server\n { name: \"x402 demo (Coinbase)\", url: \"https://x402-demo.coinbase-samples.workers.dev/weather\" },\n // xpay facilitator - just checking if it's up\n { name: \"xpay facilitator\", url: \"https://facilitator.xpay.sh/\" },\n // CDP facilitator \n { name: \"CDP facilitator\", url: \"https://x402.org/facilitator\" },\n // From awesome-x402: Domain Intelligence API\n { name: \"Domain Intelligence\", url: \"https://domainintell.com/api/whois/example.com\" },\n // MoonMaker\n { name: \"MoonMaker\", url: \"https://api.moonmaker.dev/v1/signals\" },\n // Automaton Oracle\n { name: \"Automaton Oracle\", url: \"https://automaton-oracle.fly.dev/api/price/btc\" },\n // AIXBT\n { name: \"AIXBT\", url: \"https://api.aixbt.tech/x402/v1/agents/indigo\" },\n];\n\nfor (const api of apis) {\n console.log(`\\n--- ${api.name} ---`);\n console.log(`GET ${api.url}`);\n\n try {\n const response = await fetch(api.url);\n console.log(`Status: ${response.status}`);\n\n const paymentRequired = response.headers.get(\"PAYMENT-REQUIRED\");\n if (paymentRequired) console.log(`✅ V2 PAYMENT-REQUIRED header found!`);\n\n const text = await response.text();\n\n if (response.status === 402) {\n console.log(`✅ Got 402!`);\n if (paymentRequired) {\n // v2 - decode base64 header\n try {\n const decoded = atob(paymentRequired);\n console.log(`V2 header decoded: ${decoded.substring(0, 300)}`);\n } catch {\n console.log(`V2 header (raw): ${paymentRequired.substring(0, 300)}`);\n }\n }\n try {\n const json = JSON.parse(text);\n if (json.x402Version) {\n console.log(`✅ V1 x402Version: ${json.x402Version}`);\n if (json.accepts?.[0]) {\n const a = json.accepts[0];\n console.log(` scheme: ${a.scheme}, network: ${a.network}`);\n console.log(` maxAmountRequired: ${a.maxAmountRequired}`);\n console.log(` payTo: ${a.payTo}`);\n console.log(` resource: ${a.resource}`);\n }\n } else {\n console.log(`Body: ${text.substring(0, 300)}`);\n }\n } catch {\n console.log(`Non-JSON body: ${text.substring(0, 200)}`);\n }\n } else {\n console.log(`Body: ${text.substring(0, 200)}`);\n }\n } catch (err: any) {\n console.log(`❌ ${err.message.substring(0, 120)}`);\n }\n}\n","/**\n * Test our own seller to confirm x402 still works,\n * then try Cloudflare Workers-hosted x402 endpoints (more likely reachable from Val Town)\n */\nimport { httpEndpoint } from \"https://esm.town/v/std/utils/index.ts\";\n\nconst sellerBase = await httpEndpoint(\"/seller.tsx\");\n\nconst apis = [\n // Our own seller (known working)\n { name: \"Our seller\", url: `${sellerBase}/api/random` },\n // Try various CF Workers x402 endpoints\n { name: \"Kobaru proxy example\", url: \"https://kobaru.dev/api/example\" },\n // Try the xpay test endpoint\n { name: \"xpay test\", url: \"https://facilitator.xpay.sh/test\" },\n // Known Cloudflare x402 agents examples\n { name: \"CF x402 example 1\", url: \"https://x402-workers-example.pages.dev/api\" },\n];\n\nfor (const api of apis) {\n console.log(`\\n--- ${api.name} ---`);\n console.log(`GET ${api.url}`);\n\n try {\n const response = await fetch(api.url);\n console.log(`Status: ${response.status}`);\n\n const paymentRequired = response.headers.get(\"PAYMENT-REQUIRED\");\n if (paymentRequired) console.log(`✅ V2 PAYMENT-REQUIRED header!`);\n\n if (response.status === 402) {\n console.log(`✅ Got 402!`);\n \n // Print ALL headers for debugging\n for (const [key, value] of response.headers.entries()) {\n if (key.toLowerCase().includes(\"payment\") || key.toLowerCase() === \"www-authenticate\") {\n console.log(` Header ${key}: ${value.substring(0, 200)}`);\n }\n }\n\n const text = await response.text();\n try {\n const json = JSON.parse(text);\n console.log(` x402Version: ${json.x402Version}`);\n if (json.accepts?.[0]) {\n console.log(` scheme: ${json.accepts[0].scheme}`);\n console.log(` network: ${json.accepts[0].network}`);\n }\n if (json.x402Version === 2 || paymentRequired) {\n console.log(` This is V2 format`);\n }\n } catch {\n console.log(` Body: ${text.substring(0, 300)}`);\n }\n } else {\n const text = await response.text();\n console.log(`Body: ${text.substring(0, 200)}`);\n }\n } catch (err: any) {\n console.log(`❌ ${err.message.substring(0, 120)}`);\n }\n}\n","createdAt",["D",1775336652142],"branchVersion","branchId","df2e7966-1a41-11f1-b341-42dde27851f2","id","df2e18a4-1a41-11f1-b341-42dde27851f2","x402-playground",["D",1772900564463],"deletedAt","legacyEnvVars","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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