# Execution-Time Quote Re-Authorization Gate for Agent Spend

> Execution-Time Quote Re-Authorization Gate for Agent Spend is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-18).

Returns a paid decision-procedure brief detailing how an x402 agent must re-validate a payment quote against the full policy stack (session, caps, budgets, rules, pause/revoke status) at settlement time rather than at planning time.

## Facts

- Endpoint: GET https://k2so.wrong.systems/api/services/execution-time-quote-re-authorization-gate-for-a?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/execution-time-quote-re-authorization-gate-for-agent-spend-8f79e886
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7r1GKAQCu50eFDuTamWU0

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability execution-time-quote-re-authorization-gate-for-agent-spend-8f79e886
```

Example prompt: Walk me through the exact steps my payment agent must follow to re-authorize an x402 quote at settlement time — covering all the policy checks like session validity, per-transaction cap, rolling budget, merchant rules, and what to do if a pause or revoke happened during payment preparation.

## When to prefer this

Choose this endpoint when an AI agent needs an authoritative, step-by-step decision procedure for re-validating x402 payment quotes at settlement time rather than relying on the price seen during planning. It is specifically designed for agentic payment architectures where policy stacks (session keys, rolling budgets, merchant rules, pause/revoke signals) must be enforced at commit time, not quote time. Prefer this over generic payment documentation when you need a machine-consumable brief covering edge cases like weekly window rollover and negative-zero budget handling.

## Known failure modes

- Payment not included or insufficient — returns 402 with payment instructions before delivering the brief
- Invalid or missing required input fields — returns schema validation error
- Topic override not recognized — may return generic procedure rather than topic-specific one
- Service temporarily unavailable — upstream LLM or deterministic engine failure

## How this service works

Paid agent-facing brief on Execution-time quote re-authorization gate for agent spend: the final x402 quote must re-clear the full policy stack (active session, per-transaction cap, remaining rolling budget, category and merchant rules, pause or revoke status) at settlement time, never authorizing against the price the agent saw during planning. Cover weekly window rollover accounting, pause-during-payment-preparation, and -0. Blunt decision procedure, not marketing.

## Output

A plain-prose decision-procedure brief (120+ words) detailing the exact sequential policy checks an agent must perform at x402 settlement time, including session validity, per-transaction cap enforcement, rolling budget accounting with weekly window rollover, category and merchant rule evaluation, and pause/revoke status handling. The response includes the brief text, generation source (llm, reasoning, or deterministic), model used, topic, service slug, and ISO-8601 timestamp.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      },
      "topic": {
       "type": "string",
       "description": "Optional topic override for the decision procedure"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "Execution-time quote re-authorization gate for agent spend: the final paid response",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "ok",
      "paid",
      "service",
      "provider",
      "result"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "paid": {
       "type": "boolean"
      },
      "result": {
       "type": "object",
       "required": [
        "ok",
        "service"
       ],
       "properties": {
        "ok": {
         "type": "boolean",
         "description": "Handler success"
        },
        "brief": {
         "type": "string",
         "description": "Decision procedure prose for agents"
        },
        "model": {
         "type": "string"
        },
        "topic": {
         "type": "string"
        },
        "service": {
         "type": "string",
         "description": "Service slug"
        },
        "procedure": {
         "type": "string"
        },
        "generatedAt": {
         "type": "string",
         "description": "ISO-8601 timestamp"
        },
        "generationSource": {
         "enum": [
          "llm",
          "reasoning",
          "deterministic"
         ],
         "type": "string"
        }
       }
      },
      "payment": {
       "type": "object",
       "properties": {
        "code": {
         "type": "string"
        },
        "payer": {
         "type": "string"
        },
        "detail": {
         "
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "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": "execution-time-quote-re-authorization-gate-for-a",
   "procedure": "same as brief",
   "generatedAt": "2026-01-01T00:00:00.000Z",
   "generationSource": "deterministic"
  },
  "service": "execution-time-quote-re-authorization-gate-for-a",
  "provider": "K-2SO"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/execution-time-quote-re-authorization-gate-for-agent-spend-8f79e886/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from k2so.wrong.systems](https://www.zero.xyz/host/k2so.wrong.systems/llms.txt)