# AgentToll MCP Approval Pack

> AgentToll MCP Approval Pack is a paid API for AI agents from agenttoll.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Generates a structured approval prompt for an AI agent action, specifying the operation name, spend cap, and payment network for human or automated review before execution.

## Facts

- Endpoint: POST https://agenttoll.dev/paid/mcp/approval-pack
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agenttoll-mcp-approval-pack-71b2dcbf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gCir5tjPANjvNFG5iyxS7

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 agenttoll-mcp-approval-pack-71b2dcbf -d '<json body>'
```

Example prompt: Before my agent runs market_radar, generate an MCP approval pack so I can review and authorize the $0.05 Base USDC spend — include the action name and spend cap in a structured approval prompt.

## When to prefer this

Use this endpoint when you need a structured, receipt-backed approval prompt before an AI agent executes a paid action — especially in x402-based agentic workflows on Base USDC where human-in-the-loop or automated spend authorization is required. Prefer this over custom approval logic when you want a standardized MCP-compatible format with clear spend cap disclosure.

## Known failure modes

- Missing action name or spend cap in request body returns malformed or generic prompt
- Invalid spend cap value may produce nonsensical authorization text
- Network or payment processing failure returns non-200 with no approval pack
- Unrecognized action name may produce a generic rather than context-specific prompt

## How this service works

108+ receipt-backed x402 work products for AI agents. Clear prices, spend caps, buyer metadata, and structured results over Base USDC.

## Output

Returns a JSON object containing a product label ('MCP Approval Pack') and a human-readable approval_prompt string that names the agent action, describes its purpose, and states the maximum spend cap in Base USDC — ready to display to a human approver or inject into an agent oversight workflow.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {
      "method": {
       "type": "string",
       "maxLength": 20
      },
      "price_usd": {
       "type": [
        "string",
        "number"
       ]
      },
      "route_url": {
       "type": "string",
       "maxLength": 500
      },
      "tool_name": {
       "type": "string",
       "maxLength": 120
      },
      "task_intent": {
       "type": "string",
       "maxLength": 240
      },
      "tool_schema": {
       "type": [
        "object",
        "string"
       ]
      },
      "seller_address": {
       "type": "string",
       "maxLength": 80
      },
      "max_payment_usd": {
       "type": [
        "string",
        "number"
       ]
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "product": "MCP Approval Pack",
  "approval_prompt": "Approve market_radar for check x402 market demand. Max spend is $0.05 in Base USDC."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agenttoll-mcp-approval-pack-71b2dcbf/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agenttoll.dev](https://www.zero.xyz/host/agenttoll.dev/llms.txt)