# Delegated Pickup Endorsement Verification Procedure

> Delegated Pickup Endorsement Verification Procedure is a paid API for AI agents from k2so-8080.on.ascii.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Runs a deterministic multi-step verification gate for delegating physical item pickup to a courier after an agent paid via x402 machine payment, checking endorsement chain, signatures, scope, expiry, identity binding, and one-time consumption.

## Facts

- Endpoint: GET https://k2so-8080.on.ascii.dev/api/services/delegated-pickup-endorsement-verification-proced
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delegated-pickup-endorsement-verification-procedure-9d0a2a5f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xycyityv8CnCnllCxJbKw

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 delegated-pickup-endorsement-verification-procedure-9d0a2a5f
```

Example prompt: Before you release the package to the courier, run the delegated pickup endorsement check — verify the endorsement chain from the paying wallet, confirm the collector identity and scope match the order, and make sure this token hasn't already been redeemed.

## When to prefer this

Use this endpoint when an AI agent has paid for physical goods via x402 and needs to delegate IRL pickup to a courier or third party, and requires a deterministic multi-factor gate (chain, signature, scope, expiry, identity, one-time use) before releasing items. Prefer this over generic signature verification when the full endorsement delegation workflow — including anti-double-spend and collector default risk — must be checked in a single ordered procedure.

## Known failure modes

- Endorsement chain broken or not traceable to paying wallet — returns ok: false with explanation in brief
- Signature invalid or nonce already consumed — one-time consumption violation flagged
- Scope mismatch: endorsement not bound to specified items or pickup location
- Endorsement expired outside receipt freshness window — time-based gate fails
- Collector identity does not match bound identity in endorsement — identity binding failure
- Collector default risk detected: settlement pending without delivery confirmation

## How this service works

Deterministic gate for an agent that paid for goods via machine payment and must delegate IRL pickup to a courier or third party. Ordered checks: endorsement chain from the paying wallet, signature validity with nonce, scope binding to specific items and location, endorsement expiry inside the receipt freshness window, collector identity binding, one-time consumption so payer and collector cannot both redeem, and collector default risk holding settlement without delivery confirmation. Outputs

## Output

Returns a JSON object with an 'ok' boolean, a 'brief' field containing decision procedure prose for agents, the generation source (llm, reasoning, or deterministic), a service slug, and an ISO-8601 timestamp. Also includes payment metadata and provider identity.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      },
      "topic": {
       "type": "string",
       "description": "Optional topic override for the decision procedure"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "Delegated pickup endorsement verification procedure paid response",
     "$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": {
         "type": "string"
  
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delegated-pickup-endorsement-verification-procedure-9d0a2a5f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from k2so-8080.on.ascii.dev](https://www.zero.xyz/host/k2so-8080.on.ascii.dev/llms.txt)