# Passkey Approval Thresholds for Agent-Initiated x402 Payments — Decision Brief

> Passkey Approval Thresholds for Agent-Initiated x402 Payments — Decision Brief 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 2026-10-12).

Returns a paid, LLM-generated decision procedure defining when an agent should approve or reject x402 payments based on passkey thresholds, including inputs, thresholds, and failure modes.

## Facts

- Endpoint: GET https://k2so-8080.on.ascii.dev/api/services/passkey-approval-thresholds-for-agent-initiated?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/passkey-approval-thresholds-for-agent-initiated-x402-payments-46d26c74
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cndHFQSFIjaM4FHps4EoD

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 passkey-approval-thresholds-for-agent-initiated-x402-payments-46d26c74
```

Example prompt: Can you pull the paid decision brief on passkey approval thresholds for agent-initiated x402 payments — I need the full procedure with inputs, thresholds, and failure modes so I can wire it into my agent's payment logic?

## When to prefer this

Choose this endpoint when you need a structured, agent-consumable decision procedure for passkey-based x402 payment approvals and free documentation doesn't provide threshold logic or failure modes. Prefer it over generic x402 docs when building automated approval gates, wallet policies, or security schemas for autonomous agents that sign payments with passkeys.

## Known failure modes

- Payment not made — endpoint returns 402 requiring USDC payment before delivering content
- Handler failure — 'ok: false' in result if the LLM or reasoning engine fails to generate a valid procedure
- Invalid query parameters — unsupported enum values for 'meta' or malformed 'topic' strings may yield errors
- Network or provider unavailability — k2so-8080.on.ascii.dev service downtime causes request failure
- Empty or degenerate brief — generation source returns minimal output if topic is too narrow or ambiguous

## How this service works

Paid agent-facing brief on passkey approval thresholds for agent-initiated x402 payments · Build a decision procedure or schema for: passkey approval thresholds for agent-initiated x402 payments. Include inputs, thresholds, failure modes. Falsifier: If free docs already solve the decision, paid product fails.. Blunt decision procedure, not marketing.

## Output

A structured JSON response containing a prose decision procedure ('brief') for passkey approval thresholds in agent-initiated x402 payment flows, including recommended inputs, threshold values, failure modes, the topic slug, an ISO-8601 generation timestamp, and the model or generation source used. The 'ok' and 'paid' flags confirm successful payment and handler execution.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      },
      "topic": {
       "type": "string",
       "description": "Optional topic override for the decision procedure"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "passkey approval thresholds for agent-initiated x402 payments · Build paid response",
     "$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)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/passkey-approval-thresholds-for-agent-initiated-x402-payments-46d26c74/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)