agent-payment-x402

Execute autonomous AI agent payments via x402 protocol and MCP tools.

Updated Nov 19, 2025

Search Tags:#ai-agent #payment processing #mcp integration #budget control #non-custodial wallet

Ready to run

npx skills add https://github.com/Sake-Team/SmartSake --skill agent-payment-x402-sake-team

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: agent-payment-x402
Source: https://github.com/Sake-Team/SmartSake/tree/main/backup/skills/agent-payment-x402
Command: npx skills add https://github.com/Sake-Team/SmartSake --skill agent-payment-x402-sake-team

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires agentwallet-sdk, and includes scripts (resource) and references (resource) and assets (resource) components.

What problem does it solve?

This Skill adds payment execution capabilities to AI agents, with built-in spending controls and non-custodial wallet support, solving the problem of agents paying for APIs, services, or other agents securely and efficiently.

Core Features & Use Cases

Payment Execution: Enable AI agents to make autonomous payments for external services or other agents.
Spending Controls: Enforce per-task and per-session budgets, allowlisted recipients, and rate limits.
Non-Custodial Wallets: Agents manage their own keys with ERC-4337 smart accounts for secure transactions.
MCP Integration: Standard MCP tools for agent payment management.
Use Case: Use when agents need to purchase services, settle with other agents, or enforce spending limits, particularly when working with cost-aware-llm-pipeline and security-review skills.

Quick Start

Set up a payment policy and instruct the agent to send a payment to the specified address.

Frequently Asked Questions about agent-payment-x402

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do AI agents make autonomous payments for external services?▼

AI agents execute autonomous payments for external services by using the x402 protocol with MCP tools to manage transaction workflows securely. This Skill enables agents to pay for APIs or other agents while enforcing budget controls and using non-custodial wallets.

What is a non-custodial wallet for AI agent payment execution?▼

A non-custodial wallet for AI agent payment execution allows agents to manage their own private keys securely using ERC-4337 smart accounts. This ensures agents have direct control over funds without relying on a third-party custodian.

How do I enforce budget controls and rate limits for AI agent transactions?▼

You enforce budget controls for AI agent transactions by setting up a payment policy that specifies per-task and per-session spending limits. The Skill also supports allowlisting recipient addresses and applying rate limits to manage expenses.

Does this payment processing Skill require agentwallet-sdk to work?▼

Yes, this payment processing Skill requires the agentwallet-sdk dependency to function. The SDK provides the foundational tools needed to interact with ERC-4337 smart accounts and execute the non-custodial wallet management logic.

Can I integrate MCP tools to manage AI agent payment workflows?▼

Yes, you can integrate standard MCP tools to manage AI agent payment workflows. The Skill provides MCP integration to handle payment execution, allowing agents to interact with external services and settle transactions autonomously.

When should I use ERC-4337 smart accounts for AI agent payments?▼

You should use ERC-4337 smart accounts for AI agent payments when your application requires secure, non-custodial wallet management with enforced spending controls. This approach is ideal for agents purchasing services or settling with other agents autonomously.