Choose an integration path
Two drop-in paths cover most products. Pick the one that matches what you are building.Add receipt checks to an app
Require specific receipts before content, rewards, or checkout.
Add identity and permissions to an agent or assistant
Register an agent or assistant and grant limits that its connected runtime can check before action.
Products and use cases
Identity verification and authorization
Carry accepted identity, organization, ownership, and permission results into connected access decisions.
Access control and eligibility
Require current receipts before content, memberships, rewards, API access, or checkout.
AI agent and assistant permissions
Register an agent or assistant, connect its controller, and set limits a supported runtime checks before action.
Wallet risk and human checks
Reuse accepted proof-of-human and wallet-risk receipts across connected flows.
Payments and payouts
Combine receipt requirements with checkout, credits, sponsored access, or supported x402 flows.
Partner handoffs and review
Preserve the decision record another connected system needs without restarting the full check.
Core receipt flow
Most integrations follow the same loop: check → verify → save receipt → reuse. See Integration. Advanced: metered API billing (x402) · Plans and creditsBuild with
Widgets
Drop-in gates and badges for React — no backend required.
SDK
Create, check, and reuse receipts from any server or app.
Hosted Verify
NEUS handles the browser step — passkey, wallet, and OAuth.
API
Server-side eligibility checks and receipt reads.
MCP
Connect supported assistants to receipt checks through one hosted endpoint.
Examples
Reference apps and samples.