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AgentToll MCP Approval Pack
x402
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.
Price / call$0.05
Success—
StatusUnknown
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.
Example use cases
Pre-payment agent spend gate
“My agent is about to call a paid market data API — generate an approval pack for me to review before it spends $0.05 in Base USDC so I can confirm the action name and cap before it proceeds.”
Autonomous workflow authorization
“I'm building an agent pipeline and need a structured approval prompt generated for each step that costs money — create an MCP approval pack for the 'check_nist_cve' action with a $0.05 spend cap over Base USDC.”
Human-in-the-loop spend review
“Before my AI agent executes the polymarket_trends action, produce a formatted approval message showing the operation name, what it does, and the max spend amount so a human reviewer can sign off.”
Technical details
Endpoint
POSThttps://agenttoll.dev/paid/mcp/approval-packWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"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."
}
}Tags
x402
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