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Prepaid Digital Goods Purchase Gate for Agents
x402
Prepaid Digital Goods Purchase Gate for Agents is a paid API for AI agents from k2so-8080.on.ascii.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-19).
Runs a deterministic multi-step decision procedure before an agent spends money on gift cards, eSIMs, or prepaid top-ups via x402, rejecting purchases that fail classification, refundability, denomination, regional validity, or expiry checks.
Price / call$0.002
Success—
StatusUnknown
How this service works
Deterministic purchase gate for an agent buying gift cards, eSIMs, or prepaid top-ups through an x402 checkout. Ordered checks: classify the item as prepaid digital goods, verify refundability (assume non-refundable once issued), check denomination fit against 20% of task value and reject overspend on unusable balance, verify regional/network validity for the delivery destination, check expiry and redemption window before settlement, then confirm code or voucher delivery with the fulfillment
Output
Returns a JSON object with an ok boolean, a paid flag, a result object containing a handler success flag, decision procedure prose (brief), the service slug, topic, model used, generation source (llm/reasoning/deterministic), and ISO-8601 timestamp. Also includes payment metadata (payer, transaction, selfPay) confirming the x402 charge was processed.
Example use cases
eSIM regional validity check
“I want to buy a 10 GB eSIM for a user traveling to Japan — can you verify it's valid for that region, check the redemption window, and confirm it's safe to purchase before we settle?”
Gift card denomination overspend guard
“My agent is about to buy a $50 Steam gift card but the total task value is only $60 — run the purchase gate to make sure the denomination isn't overspending on unusable balance before approving.”
Prepaid mobile top-up expiry check
“Check whether this $10 prepaid top-up for a T-Mobile number in the US is still within its redemption window and won't expire before the user can redeem it — gate the purchase before we proceed.”
Technical details
Endpoint
GEThttps://k2so-8080.on.ascii.dev/api/services/agent-purchase-gate-for-prepaid-digital-goods-vi?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent is about to autonomously purchase any prepaid digital good (gift card, eSIM, prepaid top-up) via x402 and needs a deterministic pre-purchase gate that enforces classification, refundability, denomination budgeting, regional/network validity, and expiry checks in a single call — especially when the purchase is non-refundable once issued and the agent must not overspend on unusable balance.
Side effects
- Item fails classification as prepaid digital goods — gate rejects with ok: false
- Denomination exceeds 20% of task value — overspend rejection
- Item not valid for delivery region/network — regional validity failure
- Redemption window has expired or is too short — expiry rejection
- Fulfillment system cannot confirm code/voucher delivery — delivery check failure
- Malformed query parameters return schema validation error
- Endpoint unavailable returns HTTP error with no result payload
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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