Exchange · noncustodial-swap

SideShift.ai

What it is. A non-custodial, no-KYC swap service spanning a broad multi-chain asset set — direct-to-wallet conversions with no funds custodied. It is no longer no-account: the API now requires an x-sideshift-secret header and an affiliateId, both taken from an account page. The account is auto-created with no email and no identity check, so the no-KYC property — the one that matters — still holds; what changed is that a credential must be fetched before the first call. (Server-side callers must also send x-user-ip or requests are blocked.)

What it bridges. BTC, L-BTC, and USDT-Liquid plus a broad multi-chain set — useful for an agent converting BTC↔stablecoin. ⚠ Lightning is switched off (measured 2026-08-07): it is absent from the coin catalogue entirely, and probes in both directions return Deposit method is disabled / Settle method is disabled, while a L-BTC↔USDT-Liquid control on the same endpoint returns a live rate.

Agent access. REST API + embeddable widgets, explicitly built for developers/product teams integrating swaps without custodying funds. Variable or fixed-rate swaps.

How an agent uses it. Request a swap quote via API, send the input asset to the quoted address from its own wallet, receive the output to a self-custody address. No onboarding, no identity.

Dependencies. A self-custody wallet holding the input asset, plus the REST API (with an account secret and affiliateId) or the embeddable widget; no KYC, and the account is auto-created with no email. No fiat — you send one crypto asset and receive another to your own address, across 200+ assets and 45+ networks.

Gotchas. Not as clean as a pure atomic swap (Boltz/SideSwap): an automated risk-screening layer can flag a transaction and hold funds (reported multi-day) and may request KYC / source-of-funds to release them — so “no-KYC” holds by default, not under duress. No fiat. Offshore — no consumer protection or recourse; the stablecoin output remains issuer-freezable. Rate/settlement risk on variable-rate swaps.

Links. sideshift.ai · API docs.