{"uid":"cap_RNgQHVMyHMha22gCQ6ETI","slug":"agent-browser-payment-context-handoff-across-sandboxed-v8-isolates-60efe011","name":"Agent Browser Payment Context Handoff Across Sandboxed V8 Isolates","description":"Paid agent-facing brief on Agent browser payment context handoff across sandboxed V8 isolates: how an agent keeps x402 payment authorization, receipts, and session continuity safe when its browser runs in ephemeral isolated runtimes (Cloudflare Kitesurf style agent-first browsers) · Build a decision procedure or schema for: Agent browser payment context handoff across sandboxed V8 isolates: how an agent keeps x402 payment a. Blunt decision procedure, not marketing.","url":"https://k2so.wrong.systems/api/services/agent-browser-payment-context-handoff-across-san","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"},"topic":{"type":"string","description":"Optional topic override for the decision procedure"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"Agent browser payment context handoff across sandboxed V8 isolates: ho paid response","$schema":"https://json-schema.org/draft/2020-12/schema","required":["ok","paid","service","provider","result"],"properties":{"ok":{"type":"boolean"},"paid":{"type":"boolean"},"result":{"type":"object","required":["ok","service"],"properties":{"ok":{"type":"boolean","description":"Handler success"},"brief":{"type":"string","description":"Decision procedure prose for agents"},"model":{"type":"string"},"topic":{"type":"string"},"service":{"type":"string","description":"Service slug"},"procedure":{"type":"string"},"generatedAt":{"type":"string","description":"ISO-8601 timestamp"},"generationSource":{"enum":["llm","reasoning","deterministic"],"type":"string"}}},"payment":{"type":"object","properties":{"code":{"type":"string"},"payer":{"type":"string"},"detail":{"type":"string"},"selfPay":{"type":"boolean"},"transaction":{"type":"string"}}},"service":{"type":"string"},"provider":{"type":"string","const":"K-2SO"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_SoCRk3gNXN4VgnfX8gegh","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a blunt, LLM-generated decision procedure for keeping x402 payment authorization, receipts, and session continuity safe when an agent's browser runs in ephemeral sandboxed V8 isolates (e.g. Cloudflare Kitesurf-style agent-first browsers).","exampleAgentPrompt":"Give me a blunt decision procedure for how an agent should keep its x402 payment authorization and receipts safe when its browser runs in ephemeral sandboxed V8 isolates — Cloudflare Kitesurf style — so session continuity doesn't break between calls.","exampleUseCases":[{"title":"Cloudflare Kitesurf x402 session safety","prompt":"My agent uses a Cloudflare Kitesurf-style browser that spins up a new V8 isolate for each task. Give me a decision procedure for how it should hand off x402 payment authorization and receipts without losing session continuity when the isolate is destroyed."},{"title":"x402 receipt persistence schema for isolated runtimes","prompt":"I need a schema or procedure for safely persisting x402 payment receipts and auth tokens between sandboxed V8 browser contexts so my agent doesn't re-authorize payments it already made — give me a blunt, practical guide."},{"title":"Ephemeral agent browser payment continuity audit","prompt":"We're building an agent that browses the web in ephemeral isolated runtimes and pays for resources using x402. Can you generate a decision procedure for ensuring payment context — authorization, receipts, session state — survives across those runtime boundaries safely?"}],"resultDescription":"A structured JSON response containing a prose decision procedure (the 'brief' field) detailing how an agent should handle x402 payment authorization, receipts, and session continuity across sandboxed V8 isolates, along with metadata including the topic, model used, generation source (llm/reasoning/deterministic), and an ISO-8601 timestamp.","failureModes":["Payment required but no x402 payment provided — returns 402 with payment details","Invalid or missing 'input' object — returns validation error","Topic override not recognized — falls back to default topic","LLM generation failure — generationSource may fall back to deterministic or return error","Service unavailable on wrong.systems — connection timeout or 5xx error"],"whenToPreferThis":"Choose this endpoint when you need a concise, agent-readable decision procedure specifically for x402 payment context handoff in ephemeral sandboxed V8 browser environments. Prefer it over generic web search or documentation lookup when you need an opinionated, structured guide rather than raw spec reading. Most useful during agent architecture design when wiring up ephemeral browsers with x402-based micropayment flows.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T12:43:24.835Z","isFirstParty":false}