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Multi-Rail x402 Settlement Route Selection Decision Procedure
x402
Multi-Rail x402 Settlement Route Selection Decision Procedure is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).
Returns a plain-prose decision procedure (120+ words) guiding an AI agent on how to select the optimal payment rail when settling an x402 transaction across multiple options.
Price / call$0.002
Success—
StatusUnknown
How this service works
Define a complete decision procedure for an agent that, upon receiving an x402 offer, must select the optimal settlement rail from multiple available options. Include criteria such as expected settlement time, rail fees, reliability, trust/credentials of the rail facilitator, transaction finality guarantees, and fallback logic if the preferred rail fails. Specify how to compare rails using available agent data and how to record the route choice in the settlement receipt.
Output
A JSON object containing a plain-prose decision procedure of 120+ words describing how an agent should evaluate and select a payment rail for multi-rail x402 settlement. Includes the model used to generate it, a topic label, service slug, ISO-8601 generation timestamp, and generation source (llm, reasoning, or deterministic). The 'brief' and 'procedure' fields carry the actionable guidance text.
Example use cases
Autonomous agent optimizing payment rail
“My agent needs to decide between multiple x402 payment rails at runtime — can you get me a step-by-step decision procedure it can follow to pick the lowest-cost, most reliable settlement route?”
Building x402 payment routing logic
“I'm building an AI agent that calls paid x402 APIs and I want a clear written procedure it can use to choose which payment rail to settle through when more than one option is available.”
Auditing agent payment decisions
“I want to review the decision logic my agent should use for multi-rail x402 settlement route selection — fetch me the current procedure so I can verify it aligns with our compliance requirements.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/multi-rail-x402-settlement-route-selection-an-agWhen to prefer
Choose this endpoint when an autonomous agent needs structured, prose-form guidance on selecting a payment rail at x402 settlement time and no internal routing logic exists. Prefer it over static documentation when you want a dynamically generated, model-produced procedure that can be refreshed on demand. Ideal for agents operating in the x402 ecosystem that need machine-readable decision guidance rather than human-facing documentation.
Side effects
- HTTP 402 returned if payment has not been settled — agent must pay exact USDC amount and retry with PAYMENT-SIGNATURE header
- Invalid or missing payment signature returns payment error detail
- Network or upstream LLM failure may return ok:false with error detail
- Topic override with unsupported content may yield a generic procedure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"paid": true,
"result": {
"ok": true,
"brief": "plain prose decision procedure (120+ words)",
"model": "deepseek/deepseek-v4-flash-0731",
"topic": "string topic",
"service": "multi-rail-x402-settlement-route-selection-an-ag",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "multi-rail-x402-settlement-route-selection-an-ag",
"provider": "K-2SO"
}
}Tags
x402
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