Agent control for standard APIs and x402 payments
Control what your agents can call, spend, and do
Control agent traffic, x402 payment approvals, signed webhooks, and audit history from one proxy layer between your agents and upstream APIs.
Capabilities
Governance layer for AI agents
From request controls to x402-aware approvals, SpendGate provides visibility and control over how your agents interact with external services.
Define per-agent policies, set spending thresholds, receive real-time alerts, and keep a complete audit trail for API calls, approvals, and x402 payment flows.
Credentials encrypted at rest and never logged. Rotate API keys without downtime. Use auth templates to standardize access patterns across your fleet.
Whether you run five agents or five hundred, SpendGate fits behind a simple proxy endpoint and gives your team one place to govern outbound agent activity.
Policy Engine
Rate limits, request caps, URL allowlists. Block or throttle agents based on configurable rules.
Spend Controls
For x402 APIs: spend limits, approval workflows, replay-safe request handling, and per-agent cost attribution.
Signed Webhooks
HMAC-signed delivery for critical events. Retry logic and delivery logs included.
Audit Trail
Policy decisions, credential rotations, agent activity. Exportable for compliance.
Compatibility
Works with any API architecture
- Rate limits, request caps, and URL allowlists
- Works with JSON APIs, files, and binary downloads
- Pause or restrict agents on policy violations
- HTTP status tracking, alerts, and audit history
- All standard controls included
- Daily spend limits and approval thresholds
- Compatible with standard x402 client retry flow
- Per-agent cost tracking and webhook events
Encrypted at rest
Upstream credentials stored with AES-256. Never logged. Rotate without downtime.
Sub-10ms decisions
Policy evaluation at the edge. No cold starts. Minimal latency overhead.
Full change history
Every edit, rotation, and pause is timestamped and attributable.
Pricing
Start free, scale as needed
3 agents, 3 auth templates, 7-day history
25 agents, 25 auth templates, 90-day history, webhooks
Unlimited agents, unlimited auth templates, priority support