> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bridg.now/llms.txt
> Use this file to discover all available pages before exploring further.

# Bridge privately

> Restrict a transfer to venues that do not publish the link between sender and recipient.

## Prerequisites

* The [TypeScript project](/guides/typescript-setup), which provides `src/evm.ts`.
* Read [Private bridging](/concepts/privacy) for what this does and does not promise.

## Script

```typescript src/bridge-privately.ts theme={null}
import { bridg, signEvmStep, account } from './evm';

async function main() {
  // Which private venues serve the corridor at all
  const { routes } = await bridg.getRoutes({ fromChain: 'base', toChain: 'arbitrum', privacy: true });
  if (routes.length === 0) throw new Error('no private route on this corridor');

  const quote = await bridg.getQuote({
    fromChain: 'base',
    toChain: 'arbitrum',
    fromToken: 'USDC',
    toToken: 'USDC',
    amountAtomic: '100000000',
    sender: account.address,
    recipient: '0xRecipient',
    privacy: true,
  });
  if (quote.emptyReason === 'no_private_route') throw new Error('no private venue priced this size');
  if (!quote.best) throw new Error('nothing executable');
  console.log(`${quote.best.venue}: ${quote.best.amountOutAtomic} in ~${quote.best.estimatedSeconds}s`);

  // privacy is carried on the quote; passing it again on build is optional
  const build = await bridg.buildTransfer({ decisionId: quote.decisionId, privacy: true });

  // A deposit-address venue returns `deposit` instead of `steps`: send exactly that amount to that address.
  if (build.deposit) {
    console.log(`send ${build.deposit.amountAtomic} to ${build.deposit.address} before ${new Date(build.deposit.deadlineMs)}`);
    return;
  }
  for (const step of build.steps) await signEvmStep(step);
}

main().catch((e) => { console.error(e); process.exit(1); });
```

## Notes

* Public venues are dropped before pricing and listed in `rejected` as `privacy_venue_required`.
* Expect a shorter table, a worse price and a slower transfer than the open route.
* `GET /bridge/venues` reports each venue's `privacyModel`.

## Endpoints used

| SDK             | Endpoint                                              |
| --------------- | ----------------------------------------------------- |
| `getRoutes`     | [`GET /bridge/routes`](/api-reference/markets/routes) |
| `getQuote`      | [`POST /bridge/quote`](/api-reference/quote/quote)    |
| `buildTransfer` | [`POST /bridge/build`](/api-reference/quote/build)    |