ActOnce Spend Gateway provides policy-driven spending controls for AI agents, ensuring financial safety and transparency.

This open-source solution allows you to define granular spending rules through a simple YAML configuration, preventing unintended purchases and providing clear audit trails.

Key features include:Policy-Driven Controls: Set amount limits, merchant allowlists, category blocks, and business hour restrictions.

The agent cannot override these defined policies.Duplicate Detection: A SQLite-backed system prevents the same purchase from occurring twice within a configurable time window, avoiding costly mistakes like double domain registrations.

Human-in-the-Loop Approval: For purchases exceeding defined thresholds, the gateway queues them for manual approval, which can be managed via Telegram alerts.

Zero Credential Exposure: The gateway acts as a decision engine and never directly handles sensitive payment credentials, ensuring maximum privacy and security.

Agent Integration: Built as an MCP server, it seamlessly integrates with OpenClaw, Hermes, Claude Code, Cursor, and any other MCP-compatible agent.

The gateway is MIT licensed and can be installed with a single npm command.

It works in conjunction with payment processors like Stripe Link to handle actual transactions after a decision is made by the gateway.

ActOnce offers tiered paid plans for scaling businesses needing advanced features like hosted dashboards, multi-user approvals, and increased spend check limits.