AI · alternatives · 2026
24 alternatives to x402r Refund Protocol
Also launched on product hunt today: https://www.producthunt.com/products/x402r-refund-protocol?l... Would appreciate feedback!
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
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x402▲119Hi HN – excited to announce x402, initially developed by Coinbase (YC 12) x402 lets any HTTP API charge per request without issuing API keys or storing credit cards. Buyers (humans or AI agents) keep funds in their own wallet and dynamically discover compatible endpoints, call them as usual, and automatically pay a microtransaction in USDC or other tokens to settle. 90 second demo: https://www.youtube.com/watch?v=PV-L2AfLhJg Problem: Every time we want to use a new API we have to: find the service online create a developer account, copy a secret key into env vars, pre-fund or…
2025 · x402.org · its alternatives →
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P402.io▲102Route, verify, and settle paid API calls with clear traces
Jan 2026 · p402.io · its alternatives →
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Accept BTC, ETH & other digital currencies in your business
2018 · coinbase.com · its alternatives →
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Peer-to-peer micropayments for torrenting. Built on ethereum using state channels.
2020 · blog.statechannels.org · its alternatives →
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delegare▲70Hi guys, am building SecureLend.ai and when working on our underwriting agents (free trial, paid after) I had issues with seamless payment options. Of course I looked at x402 which I believe is a great protocol but not a fan of a) sharing private keys with the agent b) having a human in the loop or c) similar workaround e.g. pre-funded wallets So I started building out a solution. For my use case it was important to not only have stablecoins but also a fiat rail which is now implemented using Stripe. Initially I build a mandate system internally but am very glad and big shoutout to the guys…
Apr 2026 · delegare.dev · its alternatives →
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ETHLend▲79Decentralized P2P marketplace to borrow against BTC, ETH
2019 · aave.com · its alternatives →
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Independent x402 stats: organic volume, wash-trades removed
Aug 2026 · x402stats.io · its alternatives →
- 12XD
Jul 2026 · x402vps.com · its alternatives →
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⚡Instant refunds by a payment gateway for the first🥇time
2019 · cashfree.com · its alternatives →
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Historical tick-level order book updates, trades, quotes, open interest, funding, liquidations, options chains and more. API access and downloadable CSV files. Real-time consolidated market data streaming API via client libraries that connect directly to exchanges
2019 · tardis.dev · its alternatives →
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Library for algorithmic trading. Contribute to xreptoid/viperfish development by creating an account on GitHub.
2023 · github.com · its alternatives →
- 16AE
2023 · caches.xyz · its alternatives →
- 17PS
2021 · peersend.com · its alternatives →
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x402 commerce layer for AI agents — beyond raw HTTP payments
May 2026 · its alternatives →
- 19RA
2019 · replin.com · its alternatives →
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9 Base endpoints for AI agents, paid in USDC per call
Aug 2026 · api.kachangsia.com · its alternatives →
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- 23MJ
2017 · machinomy.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →