Virtual phone numbers for SMS verification AND long-term rental — 190+ countries × 1000+ services, seed-phrase auth, 14 crypto rails (BTC, XMR, USDC...) and a public agent-purchasable API (MCP, REST) for AI clients.
No-KYC services with "Custodial"
The service holds your funds on your behalf — counterparty risk.
GI
GiftCryp
Crypto-first gift-card and mobile-topup kiosk: 1,547 brands across most countries, paid with Bitcoin, Monero, USDT, ETH and 9 other coins, no signup, no KYC, code-by-email in about eleven minutes.
SI
SimSms
Virtual numbers for SMS verification and 7-to-30-day rentals across 145 countries, plus dedicated 5G mobile proxies on named carriers. Email-only sign-up, crypto payment, and unused codes are never charged.
RE
Retroswap
Account-less crypto swap dedicated to Monero — accepts 50+ input coins, never asks for name, email or ID, and explicitly refuses Chainalysis, Elliptic or TRM-style transaction screening.
Free disposable email addresses on three shared domains, readable in the browser or through a keyless REST API and an MCP server for AI agents — no account, no payment, and every message deleted after five days.
CR
Cryptocardium
No-KYC crypto-funded Visa and Mastercard cards, virtual and physical. Fund from 20+ chains including Bitcoin, Monero and USDT, spend via Apple Pay or Google Pay, and issue or freeze cards through a REST and MCP API.
SW
Swapter
Instant crypto exchange supporting 1,200+ assets across 450+ networks — no signup, wallet-to-wallet swaps in minutes, but a risk-scoring engine can pause transactions and demand full KYC.
PE
PegasusSwap
Instant no-signup crypto swap platform supporting 1,000+ coins including Bitcoin and Monero — no account, no KYC on the happy path, 2–10 minute settlement, AML risk-scoring may apply additional checks on flagged transactions.
FI
FixedFloat
Instant no-signup crypto swap running since 2018 — one of the first to integrate Bitcoin Lightning, 80+ coins including Monero, 0.5% floating / 1% fixed fees. AML flagging and two 2024 hot-wallet hacks on file.
KR
Kraken
Veteran US-regulated exchange founded 2011 with 600+ assets, full mandatory KYC, and bi-annual proof-of-reserves audits — listed here as a comparison baseline for custodial KYC platforms, not as a no-KYC option.
BI
Binance
World's largest centralized crypto exchange — 500+ assets, mandatory KYC for every user, SAFU insurance fund, monthly Merkle-tree proof-of-reserves, and a $4.3B 2023 DOJ settlement with an ongoing compliance monitor.