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x402 APIs that accept USDT

Tether’s dollar stablecoin, including the USD₮0 / USDT0 omnichain version. 10 listings name it as a payment token (listed as USDT, USD₮0, USDT0). Sorted A to Z by name.

We check 9 of these 10 listings every day without paying. On the latest check 9 were up and 9 answered with a valid x402 payment request; paid calls we measured start at $0.001 per call (median $0.01). Status data as of Nov 10, 2026, 7:35 AM ET.

ToolProtocolNetworksTokensPrice / callVerified
Arch Toolsx402Base, PolygonUSDC, USDT$0.012026-10-22
Barkerx402Base, Polygon, ArbitrumUSDC, USD₮0$0.0012026-10-22
Bitrefillx402Base, Solana, PolygonUSDC, USD₮0Varies, see provider2026-10-22
CoinMarketCapx402Base, BNB ChainUnited Stables, USDCVaries, see provider2026-10-22
CyberPulsex402Base, Solana, PolygonUSDC, USDT0$0.02–$0.082026-11-03
DevX Voicex402Base, Polygon, ArbitrumUSDC, USD₮0$0.001–$0.0022026-11-06
loophole tapex402Base, Solana, X LayerUSDC, Global Dollar$0.001–$0.012026-10-28
Messari APIx402Base, Solana, X LayerUSDC, USD₮0$0.15–$0.752026-10-22
Nansenx402Base, Solana, X LayerUSDC, USD₮0Varies, see provider2026-10-22
ZerouterPrepaid crypto top-up (non-x402)Base, Arbitrum, EthereumUSDC, USDTFrom $0.007 per 1M input tokens (varies by model)2026-11-02

From our listing data (updated 2026-11-09). Networks and tokens are as each service lists them; not every token is offered on every network. Prices are listed prices per call; open a listing for the price we saw in its own HTTP 402 reply.

Questions

How many x402 APIs accept USDT?
10 listings name USDT as a payment token (data updated 2026-11-09): Arch Tools, Barker, Bitrefill, CoinMarketCap and 6 more.
On which networks is USDT accepted?
Networks these listings accept: Base (10), Polygon (6), Solana (6), X Layer (6), Arbitrum (5), BNB Chain (3), Ethereum (2), Monad (2). A service may offer USDT on only some of its networks, so check its 402 terms before paying.
Do they also accept USDC?
10 of 10 also accept USDC.

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