Developer platform

The bridge, as an API.

Quote, create and track cross-chain swaps across 280+ assets and 20+ networks with one REST API. Your wallet is your account — sign a message, issue a key, ship.

Read the API docs

Your API keys

Connect a wallet to begin

Your wallet is your developer identity — no email, no password. Connect, sign one message, and issue keys.

Try it

Pass your key as x-api-key. A live quote in one request:

curl

curl "https://api.parcel.cash/v1/rate?sendToken=USDT&sendNetwork=TRX&receiveToken=ETH&receiveNetwork=ETH&sendAmount=100" \
  -H "x-api-key: pcl_live_…"

Full endpoint reference, error codes and examples live in the docs.

Embed the swap widget

Drop the full terminal into any site with one iframe — no key needed. Add your referral code as ref and every swap made through your embed earns you 10% of its Quiet Points, forever. Optional params: from / to (SYMBOL:NETWORK) to preselect the pair, and theme=light.

html

<iframe
  src="https://quiet.markets/widget?from=BTC:BTC&to=SOL:SOL&ref=YOUR_CODE"
  width="100%" height="720" style="border:0;border-radius:16px"
  allow="clipboard-write"
></iframe>

Get your referral code on the $QUIET page by connecting a wallet.