A Simple REST API with Maximum Flexibility

Create, manage, and sign with non-custodial wallets from any backend — no browser, no extension, no human in the loop, and no private key exposure.

The full wallet lifecycle, four endpoints away

Spin up non-custodial MPC wallets programmatically — one API call per wallet, pregenerated or on demand, at any scale.

Attach transaction permissions per wallet: spending limits, allowlists, and approval rules enforced at the MPC signing layer.

Sign transactions and messages server-side in under a second — no browser, no extension, and no private key ever exposed.

Lock usage down with API keys and IP whitelisting, and scale from 30 requests per minute on the free tier to custom enterprise throughput.

Run wallet operations from your own services — pregenerate wallets for users before they ever sign in, and claim them later.

Give every agent its own wallet with cryptographic guardrails, so agents transact autonomously inside boundaries that hold.

Automate payouts, treasury flows, and settlement on stablecoin rails without holding user funds or managing keys.

SBC leverages the Para REST API to create agent wallets that have spending limits and can pay for x402-enabled APIs.