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Per-Task Budget Assertion Decision Procedure for Browser Agents
x402
Per-Task Budget Assertion Decision Procedure for Browser Agents is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).
Returns a generated decision procedure (prose brief) for how an autonomous browser agent should assert, validate, and enforce a per-task spending budget before authorizing x402 micropayments
Price / call$0.002
Success—
StatusUnknown
How this service works
Decision procedure for agents that buy x402 credits from a browser or workflow agent context. Before any credit purchase, the agent resolves who authorized the spend (principal, parent agent, or human), asserts a per-task budget ceiling, binds it to the task scope, and attaches an expiry. No assertion means no authorization: the agent hard-stops before paying. Includes evidence retention rules for post-hoc audit, revocation of stale assertions, and falsifier checks for over-wide scope or
Output
A JSON object containing a plain-prose decision procedure brief (120+ words) explaining how a browser agent should assert and enforce a per-task budget for x402 payments, along with metadata: the LLM model used, generation source (llm/reasoning/deterministic), topic, service slug, and ISO-8601 generation timestamp. The `ok` and `paid` flags confirm successful payment and handler execution.
Example use cases
Budget gate before multi-step research task
“My autonomous research agent is about to run a 10-step task that calls several paid APIs — give me the decision procedure it should follow to check whether each payment fits within its $0.05 per-task USDC budget before settling.”
Browser agent payment policy onboarding
“I'm building a browser agent that uses x402 micropayments and I need a written procedure it can follow to assert its per-task budget limit and decide when to abort rather than overspend — can you pull the K-2SO brief for that?”
Auditing agent spend authorization logic
“I want to audit whether the payment authorization logic in my autonomous agent matches best practices — fetch me the per-task budget assertion decision procedure so I can compare it against what we've implemented.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/agent-payment-authorization-per-task-budget-asse?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an autonomous agent or agent-builder needs a structured, LLM-generated decision procedure specifically for per-task budget assertion and payment authorization in x402 micropayment contexts. Prefer it over generic budget logic when you need an opinionated, prose-format brief tailored to browser agents operating on Base/USDC. It is especially useful during agent policy onboarding, compliance audits of spending logic, or when bootstrapping a new agent that needs embedded spending-gate reasoning.
Side effects
- HTTP 402 returned if USDC payment has not been settled — agent must pay exact amount and retry with PAYMENT-SIGNATURE header
- Payment signature mismatch or expired signature causes rejection
- Invalid or unsupported HTTP method returns error
- Malformed topic override parameter may produce off-topic or degraded procedure brief
- LLM backend unavailability may fall back to deterministic generation source
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-payment-authorization-per-task-budget-asse",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "agent-payment-authorization-per-task-budget-asse",
"provider": "K-2SO"
}
}Tags
x402
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