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Multi-Stablecoin Settlement Denomination Choice Procedure
x402
Multi-Stablecoin Settlement Denomination Choice Procedure 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 2026-10-18).
Returns a decision procedure for choosing which stablecoin (USDC, USDT, USDGO, etc.) to settle a payment intent in, given merchant acceptance, wallet balances, fee asymmetry, and policy constraints.
Price / call$0.002
Success—
StatusUnknown
How this service works
Decision procedure for an agent that must choose which stablecoin to settle a payment intent in when the merchant accepts several (USDC, USDT, USDGO, and similar). Inputs: accepted denominations per merchant offer, wallet balances per denomination, facilitator and rail fee asymmetry per coin, exchange-rate volatility of non-USD-pegged or weakly-pegged assets, and the principal policy envelope on denomination preference. Outputs one verdict per intent: settle-native (pay in the coin the wallet
Output
A JSON object containing a boolean success flag, the paid status, a 'brief' field with decision procedure prose suitable for agent consumption, the recommended settlement verdict (settle-native, convert-then-pay, or reject), the topic slug, generation source (llm, reasoning, or deterministic), and an ISO-8601 timestamp.
Example use cases
Lowest-fee stablecoin selection for recurring payments
“My agent pays several merchants weekly and they all accept multiple stablecoins. Run the denomination choice procedure to figure out which coin minimizes rail and facilitator fees across my wallet balances for each payment intent.”
Avoid weakly-pegged assets during volatile market
“I'm about to settle a large payment and the merchant accepts USDC, USDT, and USDGO. Run the stablecoin denomination decision to make sure I'm not settling in anything with exchange-rate volatility risk right now.”
Policy-constrained denomination for enterprise wallet
“Our company policy requires we prefer USDC over other stablecoins whenever accepted, but fall back to USDT if USDC balance is insufficient. Can you run the denomination choice procedure for this payment intent to confirm which coin we should use?”
Technical details
Endpoint
GEThttps://k2so-8080.on.ascii.dev/api/services/agent-payment-settlement-denomination-and-disput?utm_source=zero.xyzWhen to prefer
Use this endpoint when an autonomous payment agent needs principled, policy-aware logic for selecting among multiple accepted stablecoins before executing an x402 payment. It is specifically suited for scenarios where fee asymmetry, weak pegs, or wallet balance constraints make the choice non-trivial. Prefer this over hardcoding denomination logic when merchant acceptance sets vary or when principal policies need to be factored in systematically.
Side effects
- Payment not included: returns 402 requiring x402 micropayment of $0.002 USDC before content is served
- Missing or malformed query parameters: procedure may return a generic or default topic response
- LLM generation failure: generationSource may fall back to deterministic with reduced detail
- Invalid meta parameter value: only '0' or '1' accepted, other values may be rejected
- Service temporarily unavailable: endpoint on ascii.dev sandbox may have uptime variability
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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