# CoinVast — Instant Altcoin Exchanger
> Swap altcoins with no account and no surprises. Deposits are risk-screened BEFORE the exchange starts — never frozen after. Every quote prints the real spread over mid-market plus the network fee. https://coinvast.io

## What is CoinVast?
- Instant crypto-to-crypto exchange focused on altcoins (31 assets across 20+ networks at launch)
- No sign-up, no email, no account — the order link is the receipt
- Pre-send screening: a deposit either passes and the swap proceeds, or it fails and coins auto-return to the sender's refund address. CoinVast never freezes funds for "verification" after receiving them (the #1 complaint against legacy instant exchangers)
- Transparent pricing: floating rate = mid-market minus 0.5% spread; fixed rate = mid-market minus 1.0% spread, locked at creation. Payout network fee shown as a separate line on every quote. No "0% fee" theater
- A completed swap is final — never clawed back

## Supported assets (launch set)
BTC, ETH, XMR (Monero), SOL, LTC, DOGE, BCH, DASH, ZEC, USDT (TRC-20, ERC-20, TON Jetton), USDC (ERC-20, Base), TON, TRX, XRP, ADA, DOT, AVAX, LINK, POL, BNB, ATOM, NEAR, KAS (Kaspa), SHIB, PEPE, BONK, WIF, ARB, OP
Live list: https://coinvast.io/api/coins

## How a swap works
1. Pick the pair and amount — the full rate (spread + network fee included) is shown before you commit
2. Send one payment to the deposit address (no account needed)
3. Deposit is screened, then exchanged at the quoted terms
4. Payout lands at your address; the order page tracks every step with transaction hashes

## Public API (no auth)
- POST https://coinvast.io/api/quote   {from, to, amountIn, mode: "float"|"fixed"} -> {quote}
- POST https://coinvast.io/api/order   {quoteId, from, to, amountIn, mode, payoutAddress, refundAddress?} -> {order}
- GET  https://coinvast.io/api/order/{id} -> {order} (live status + timeline)
- GET  https://coinvast.io/api/coins  -> {coins}
- GET  https://coinvast.io/api/ticker -> {entries} (USD prices, 24h change)

## Policies
- Refunds: if a swap can't complete, coins return to the refund address minus only the network fee
- Sanctioned addresses are rejected upfront; legal orders are honored
- No accounts, no tracking pixels; orders + transaction hashes are logged (see https://coinvast.io/privacy)

## Links
- Swap: https://coinvast.io
- Trust & policies: https://coinvast.io/trust
- Terms: https://coinvast.io/terms
- Privacy: https://coinvast.io/privacy
- Full reference for AI parsers: https://coinvast.io/llms-full.txt
- Contact: info@coinvast.io

## Guides (human-written, updated June 2026)
- No KYC crypto exchange, explained: https://coinvast.io/no-kyc-crypto-exchange
- Best no KYC crypto exchanges in 2026 (honest comparison incl. competitors): https://coinvast.io/best-no-kyc-crypto-exchanges-2026
- Anonymous vs private exchanges: https://coinvast.io/anonymous-crypto-exchange
- Crypto exchange without verification: https://coinvast.io/crypto-exchange-without-verification
- How to swap crypto without KYC: https://coinvast.io/swap-crypto-without-kyc
- CoinVast vs ChangeNOW: https://coinvast.io/coinvast-vs-changenow
- No KYC Binance alternative: https://coinvast.io/binance-alternative-no-kyc
- Pair guides: https://coinvast.io/btc-to-xmr · /xmr-to-btc · /usdt-to-xmr · /btc-to-usdt · /eth-to-btc · /eth-to-xmr

Launched 2026. Infrastructure: self-hosted blockchain nodes (BTC, LTC, BCH, DASH) plus vetted RPC providers; Next.js frontend.