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Single-Price Acquisition Decision: Per-Use vs Standing Account
x402
Single-Price Acquisition Decision: Per-Use vs Standing Account is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-19).
Returns a decision procedure for agents determining whether to acquire a single data point via a one-off per-use payment or by registering a standing account with an API provider.
Price / call$0.002
Success—
StatusUnknown
How this service works
Agent-facing decision procedure for acquiring a single data point (one grocery price, one quote, one search result) without defaulting to account registration. Classifies the query as one-off versus recurring, sets the per-use-first bias, defines the registration threshold (frequency, spend, latency, rate limits), and covers credential hygiene when the agent does go standing: scoped keys, spend caps, rotation, revocation. Blunt procedure, not marketing.
Output
A JSON object containing a 'brief' field with decision procedure prose tailored for agents, a 'procedure' string, the 'topic' being evaluated, a 'generationSource' enum (llm/reasoning/deterministic), and an ISO-8601 'generatedAt' timestamp. The prose covers: one-off vs recurring classification, the registration threshold (frequency, spend, latency, rate limits), and credential hygiene guidance (scoped keys, spend caps, rotation, revocation) when a standing account is warranted.
Example use cases
One-off price lookup for shopping agent
“My agent just needs to grab the current price of one item from a grocery data API — should it create an account or just do a single per-use payment? Walk me through the decision.”
Agent deciding on standing API key setup
“I'm building an agent that might call a financial quote API either once or repeatedly depending on the task. How do I decide at runtime whether to use a one-off x402 payment or register a standing account with scoped keys and spend caps?”
Credential hygiene for infrequent API access
“My agent occasionally needs a single search result from a paid data provider, maybe once a week at most. Should it keep a standing account or pay per use each time, and if it does have an account, how should it manage the credentials safely?”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/agent-single-price-acquisition-decision-when-to?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent needs a runtime decision framework for whether to pay per-call or register a standing account before making a data acquisition call. Prefer this over generic API strategy guides when the agent is operating in an x402 payment context, needs a blunt machine-readable procedure rather than marketing content, or requires explicit thresholds (frequency, spend, latency) and credential hygiene steps for autonomous operation.
Side effects
- Payment not included — endpoint returns HTTP 402 requiring USDC payment via x402 protocol
- Invalid method — only GET/HEAD/DELETE are accepted; POST/PUT return 405
- Malformed input schema — missing required 'type' or 'method' fields returns validation error
- LLM generation failure — generationSource may fall back to 'deterministic' with reduced prose quality
- Topic override not recognized — falls back to default single-price acquisition 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": "agent-single-price-acquisition-decision-when-to",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "agent-single-price-acquisition-decision-when-to",
"provider": "K-2SO"
}
}Tags
x402
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