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x402 Agent Spend Observability & Kill-Switch Enforcement Decision Procedure
x402
x402 Agent Spend Observability & Kill-Switch Enforcement Decision Procedure is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status down (last checked 2026-10-23).
Returns a paid decision procedure brief for agents operating under a hard spend cap with a remote kill switch, covering pre-authorization budget checks, per-service limits, spend telemetry thresholds, and kill-switch activation semantics.
Price / call$0.002
Success—
StatusDown
How this service works
Decision procedure for an agent that must never overrun its budget: pre-authorization budget check against live balance, per-service spend limits with append-only denial ledger, mid-run telemetry thresholds, remote kill-switch activation semantics (who may pull it, latency bounds, in-flight payment handling at kill moment), circuit-breaker states OPEN/HALF_OPEN/CLOSED, and reconciliation so no payment settles after the kill signal lands. Outputs ALLOW, DENY_WITH_RECEIPT, TRIP_BREAKER, or HALT
Output
A structured JSON response containing a prose decision procedure brief ('brief' field) written for agents, covering pre-authorization budget checks, per-service limits, denial ledger semantics, mid-run telemetry thresholds, kill-switch activation rules, in-flight payment handling, and a service slug, generation timestamp, and source (llm/reasoning/deterministic). Payment metadata is also returned confirming the $0.002 USDC transaction.
Example use cases
Pre-authorization budget gate for agent
“Before my agent makes any x402 payment, I need it to check its live balance against the hard spend cap — give me the exact decision procedure it should follow, including what to do if the balance is too low.”
Kill-switch activation handling mid-run
“My agent is mid-run processing several payments and the remote kill switch gets pulled — what's the correct procedure for handling those in-flight transactions, who can pull the switch, and what are the latency bounds it needs to respect?”
Per-service budget limit enforcement
“I want my agent to enforce separate budget limits per service it calls, logging every denial to an append-only ledger — walk me through the decision procedure for checking and recording those per-service caps.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/x402-agent-spend-observability-and-kill-switch-e?utm_source=zero.xyzWhen to prefer
Choose this endpoint when building or auditing an autonomous agent that must operate under a hard spend cap with a remote kill switch on the x402/Base payment stack. It provides a blunt, agent-readable decision procedure (not marketing copy) specifically covering pre-authorization balance checks, per-service denial ledger logic, mid-run telemetry thresholds, and kill-switch semantics — making it ideal for agents that need authoritative governance logic rather than general payment documentation.
Side effects
- Payment not provided or rejected — endpoint returns 402 requiring x402 payment before content is delivered
- Invalid method used (POST/PUT not allowed) — only GET/HEAD/DELETE accepted
- Topic override param malformed — may fall back to default topic or return error
- Service temporarily unavailable on k2so.wrong.systems — upstream agent merchant may be offline
- Stale or cached generation — generatedAt timestamp may indicate an older brief if LLM generation is cached
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": "x402-agent-spend-observability-and-kill-switch-e",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "x402-agent-spend-observability-and-kill-switch-e",
"provider": "K-2SO"
}
}Tags
x402
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