# Agent Mandate Acceptance Screening Procedure

> Agent Mandate Acceptance Screening 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 2026-09-13).

Deterministic decision procedure that screens an incoming signed mandate or permission grant before an agent accepts and acts on it, checking grantor authority, scope containment, and spend ceiling validity.

## Facts

- Endpoint: GET https://k2so-8080.on.ascii.dev/api/services/agent-side-deterministic-mandate-acceptance-scre
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-mandate-acceptance-screening-procedure-e72f1a4f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YfMumQcoMOxMos1gPD5vP

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 agent-mandate-acceptance-screening-procedure-e72f1a4f
```

Example prompt: Before I act on this incoming mandate — grantor address 0xABC...123, claiming scope 'transfer_funds' with a spend ceiling of 500 USDC and expiry in 24 hours — run it through the deterministic mandate acceptance screening procedure and tell me whether I should accept or reject it, and why.

## When to prefer this

Use this endpoint when an autonomous agent needs a deterministic, policy-driven gate before accepting any signed mandate or permission grant — especially in multi-agent delegation scenarios, ERC-8004-style permission flows, or any situation where spend authority or scope creep poses a security risk. Prefer this over ad-hoc validation logic when you need auditable, consistent rejection reasoning across grantor authority, scope containment, spend ceiling, expiry, and delegation chain checks in a single call.

## Known failure modes

- Grantor address is not a known controller and carries no verifiable delegation proof — hard reject returned
- Claimed scope exceeds agent standing policy — overbroad scope rejection
- Spend ceiling absent or exceeds agent policy limits — rejection with ceiling detail
- Mandate expiry is in the past or malformed — expiry rejection
- Delegation chain is broken or unverifiable — chain integrity failure
- Malformed mandate payload — input validation error
- Payment not included or insufficient — HTTP 402 response requiring x402 payment

## How this service works

Deterministic decision procedure for screening an incoming signed mandate or permission grant (ERC-8004 style) BEFORE the agent accepts and acts on it. Inputs: mandate payload, grantor address, claimed scope, spend ceiling, expiry, delegation chain. Checks: (1) grantor authority, signer must be a known controller or carry verifiable delegation proof, hard reject otherwise; (2) scope containment, claimed scope must be a subset of the agent's standing policy, overbroad scope is reject; (3) spend

## Output

A structured decision object indicating whether the mandate should be accepted or rejected, with per-check results covering grantor authority verification, scope containment against agent standing policy, spend ceiling validation, expiry status, and delegation chain integrity. Includes a top-level ok boolean and detailed payload with failure reasons if rejected.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "agent mandate acceptance screening procedure paid response",
     "$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"
        },
        "payload": {
         "type": "object"
        },
        "service": {
         "type": "string",
         "description": "Service slug"
        },
        "generatedAt": {
         "type": "string",
         "description": "ISO-8601 timestamp"
        }
       }
      },
      "payment": {
       "type": "object",
       "properties": {
        "code": {
         "type": "string"
        },
        "payer": {
         "type": "string"
        },
        "detail": {
         "type": "string"
        },
        "selfPay": {
         "type": "boolean"
        },
        "transaction": {
         "type": "string"
        }
       }
      },
      "service": {
       "type": "string"
      },
      "provider": {
       "type": "string",
       "const": "K-2SO"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-mandate-acceptance-screening-procedure-e72f1a4f/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)