The Gloam SDK

The privacy layer,
as a package.

Add shielded balances, private payments, and selective disclosure to any Robinhood Chain app or agent. Real zero-knowledge, no proving stack to build from scratch.

Quickstart API reference

The surface

Everything a private app needs, in one import.

Shielded balances

Deposit ETH or tokenized stocks into a private balance only the holder can see or spend.

Private payments

Send inside the vault to a receive tag. No public transfer, no visible amount.

Selective disclosure

Prove one balance to a chosen party, revealing nothing else. Provable, not a dark pool.

Private agents

The same core runs server-side, so an AI agent holds and moves value under policy.

How shielding works

A private balance in three steps.

Mint a note

The SDK creates a Poseidon note that binds your secret to the amount and asset.

Prove privately

It generates the shield proof in the browser or in node. The secret never leaves the client.

Sign and deposit

You sign the resolved shieldBound call. The balance is now private, and yours alone.

From zero to shielding in one command.

create-gloam-app scaffolds a working Next.js app on the SDK, wired and ready. Point your builders at it.

Start from a reference

Three shapes a builder starts from.

agent-shieldNode

The smallest agent: mint a note, prove, deposit privately.

pay-botNode

A private payment end to end: shield, sync, send.

web-shieldBrowser

Shield in the browser, read the balance from chain.

Build the private layer into your app.

Testnet is live with an open SDK, docs, and examples. Ship private on Robinhood Chain today.

Start building GitHub

The privacy layer,as a package.