LetAgentPay is an open-source infrastructure tool designed to give AI agents the ability to make autonomous payments while enforcing user-defined budgets and spending policies. It enables agents to pay for APIs, services, and tasks independently, but only within strict rules and limits set by the user. The platform supports both fiat and cryptocurrency payment rails, allowing a unified budget and policy engine to manage spending across different types of transactions, including USDC on Base via x402.
The tool’s policy engine acts as an intermediary between the agent and payment systems, checking each spending request against rules that can be defined in plain English or JSON. Users can set detailed budgets, category-specific limits, schedules, and per-request caps. The engine performs instant checks on each request, including budget, category, schedule, and transaction history, and can auto-approve routine purchases while escalating unusual or high-value requests for manual review. Every transaction is logged, providing a full audit trail and real-time visibility through a dashboard that allows users to approve, reject, or review spending with full context.
LetAgentPay offers a variety of integration options, including Python and TypeScript SDKs, a REST API with bearer token authentication, and an MCP server compatible with Claude Desktop, Cursor, and other MCP-compatible AI tools. The service provides nine framework integrations and supports quick setup, with installation and configuration taking under five minutes. It is available as both a self-hosted solution with full source access and as a hosted SaaS, both offering the same policy engine and APIs.
The platform is aimed at agent developers, teams deploying AI in production, and builders working with x402 or AP2, providing them with programmable wallets and granular spending controls for their AI agents. LetAgentPay is free to use during its early access period.
LetAgentPay is an Infrastructure & Backend product. It focuses on enabling AI agents to autonomously make payments and manage spending within defined policies. It is built as an open-source project for AI developers and automation engineers. LetAgentPay is open source under the MIT license. The product ships for the command line and API.
LetAgentPay first shipped in 2026. Development happens publicly on GitHub with 10 commits in the last 90 days. PulseGate's similarity index finds few close equivalents — LetAgentPay occupies a relatively distinct niche. Key capabilities include programmable wallets, spending policies, and real-time approval. It exposes integrations via an MCP server and a public API.
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