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API-Key-Free Pay-Per-Call Migration Decision Procedure (K-2SO)
x402
API-Key-Free Pay-Per-Call Migration Decision Procedure (K-2SO) 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 an LLM-generated decision procedure advising AI agents on when and how to migrate from API-key-based billing to pay-per-call x402 micropayment models.
Price / call$0.002
Success—
StatusUnknown
How this service works
Paid agent-facing brief on API-key-free pay-per-call migration decision procedure for agents: when to replace API keys with x402 pay-per-call access · Build a decision procedure or schema for: API-key-free pay-per-call migration decision procedure for agents: when to replace API keys with x402 pay-per-call access. Include inputs, thresholds, failure modes. Falsifier: If free docs already solve the decision, paid product fai-0. Blunt decision procedure, not marketing.
Output
A JSON object containing a plain-prose decision procedure of 120+ words advising whether and how to migrate from API-key billing to x402 pay-per-call, along with the topic, service slug, the LLM model used to generate the response, a generation source label (llm/reasoning/deterministic), and an ISO-8601 timestamp of generation.
Example use cases
Evaluating x402 adoption for a new agent
“I'm about to launch an autonomous agent that needs to call dozens of external data services — walk me through the decision procedure for whether to use API keys or switch fully to pay-per-call x402 micropayments.”
Justifying migration to a technical lead
“My team is debating dropping API key management in favor of per-call USDC payments for our agent fleet — can you generate the decision procedure brief so I can present the tradeoffs clearly?”
Scoping a custom migration topic
“Give me the pay-per-call migration decision procedure specifically focused on real-time market data services, so I know when per-call billing is better than a monthly API key subscription for that use case.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/api-key-free-pay-per-call-migration-decision-proWhen to prefer
Choose this endpoint when an AI agent needs structured, prose-form decision guidance specifically about migrating from API-key-based access to x402 pay-per-call micropayment models. Prefer this over generic LLM prompting when you want a curated, service-specific procedure with provenance metadata (model, timestamp, generation source). Ideal for agents that need auditable, repeatable decision logic without maintaining their own reasoning chains about API billing architecture.
Side effects
- HTTP 402 returned if USDC payment not settled before retry — agent must pay exact amount and include PAYMENT-SIGNATURE header
- Invalid method (POST, PUT, PATCH) returns error — only GET/HEAD/DELETE supported
- Malformed queryParams (e.g. invalid meta value not in ['0','1']) may cause schema validation failure
- Payment transaction not confirmed on Base within timeout may cause retry loops
- Topic override too vague or unsupported may result in generic procedure rather than targeted advice
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": "api-key-free-pay-per-call-migration-decision-pro",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "api-key-free-pay-per-call-migration-decision-pro",
"provider": "K-2SO"
}
}Tags
x402
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