- Protocol
- x402
- Type
- SDK
- Stars
- 155
- License
- Apache-2.0
- Last push
- Sep 14, 2026
by qntxAbout r402
r402 is an open-source x402 SDK by qntx, written mainly in Rust. Rust SDK for the x402 payment protocol. It has 155 GitHub stars and uses the Apache-2.0 license, and its code was last pushed on Sep 14, 2026.
New to x402? Our x402 Protocol guide explains how it works and lists other projects built on it.
At a glance
- Protocol
- x402
- Type
- SDK
- Language
- Rust
- License
- Apache-2.0
- GitHub stars
- 155
- Last push
- Sep 14, 2026
Listed from public GitHub data, checked 2026-11-08. Not scanned by AgenticMart.
Questions about r402
What is r402?
Rust SDK for the x402 payment protocol It is listed as a x402 SDK, maintained in the qntx/r402 repository on GitHub.
How do I install r402?
The README in qntx/r402 has the setup steps. Clone the repository with git clone https://github.com/qntx/r402.git and follow its instructions.
Is r402 an official x402 project?
No. It is a community project built on x402, not published by the organisation that runs the protocol.
What license does r402 use?
It is published under the Apache-2.0 license. Check the license file in the repository before using it commercially.
Is r402 still maintained?
Its code was last pushed on Sep 14, 2026, and it had 155 GitHub stars when we checked on 2026-11-08. Look at recent issues and releases in the repository for a fuller picture.
README
r402
Rust SDK for the x402 payment protocol.
See docs/.
License
Licensed under either of:
- Apache License, Version 2.0 (LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0)
- MIT License (LICENSE-MIT or https://opensource.org/licenses/MIT)
at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this project shall be dual-licensed as above, without any additional terms or conditions.
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Code is law. We write both.
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