# ERC-7715 Delegated Payment Permission Liability Caps Decision Procedure

> ERC-7715 Delegated Payment Permission Liability Caps Decision Procedure is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-21).

Returns an AI-generated decision procedure brief on how to set, verify, and enforce liability caps on ERC-7715 delegated payment permission grantees before USDC settles on Base.

## Facts

- Endpoint: GET https://k2so.wrong.systems/api/services/erc-7715-delegated-payment-permission-liability?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/erc-7715-delegated-payment-permission-liability-caps-decision-procedure-95ae5038
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4vCkqMbER_dm12d4HkEZp

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 erc-7715-delegated-payment-permission-liability-caps-decision-procedure-95ae5038
```

Example prompt: Walk me through the decision procedure for setting and enforcing a liability cap on a delegated ERC-7715 payment permission grantee before USDC nets on Base — I need to know how to detect stale caps, apply per-permission ceilings, and handle netting.

## When to prefer this

Choose this endpoint when you need authoritative, agent-consumable guidance specifically on ERC-7715 delegated payment permission liability caps — particularly the grantee-side cap (not the holder's own spend cap). It is distinct from general spend-cap or stablecoin-denomination endpoints and is the right choice when you need to reason about per-permission ceilings, stale-cap detection, and netting before USDC settles on Base in an x402 or MCP tool session context.

## Known failure modes

- Payment not received or insufficient USDC — returns 402 Payment Required with payment instructions
- Invalid query parameters — returns 400 with validation error
- Service temporarily unavailable — returns 503 or network timeout
- LLM generation failure — ok field may be false with no brief returned
- Stale or missing metadata if meta=1 mode is requested but service is misconfigured

## How this service works

Decision procedure for an agent or holder granting payment permissions (ERC-7715 permissions, Cloudflare payment-signature enforcement, x402-paid MCP tool sessions) to set, verify, and enforce a liability cap on the delegated grantee before USDC nets on Base. Distinct from holder spend caps (own budget): this bounds the permission grantee's exposure, not the grantor's own limit. Returns a tiered verdict per grant: approve, cap-and-flag, or revoke, with cap arithmetic, stale-cap detection,

## Output

A paid prose decision-procedure brief (generated by LLM, reasoning engine, or deterministic logic) covering how to set, verify, and enforce liability caps on ERC-7715 delegated payment permission grantees. Includes guidance on stale-cap detection, per-permission ceilings, and netting behavior before USDC settlement on Base. Response includes the brief text, generation source, topic, model used, and an ISO-8601 timestamp.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      },
      "topic": {
       "type": "string",
       "description": "Optional topic override for the decision procedure"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "ERC-7715 delegated payment permission liability caps: decision procedure paid response",
     "$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": "erc-7715-delegated-payment-permission-liability",
   "procedure": "same as brief",
   "generatedAt": "2026-01-01T00:00:00.000Z",
   "generationSource": "deterministic"
  },
  "service": "erc-7715-delegated-payment-permission-liability",
  "provider": "K-2SO"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/erc-7715-delegated-payment-permission-liability-caps-decision-procedure-95ae5038/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)