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r402

x402 sdk ✅ Safe

Quick answers

What is r402?
r402 is a x402 listing for sdk. Modular Rust SDK for x402 protocol. Client signing, server gating, facilitator settlement with dual-path ERC-3009/Permit2 transfers, MCP integration, and 44 built-in chain deployments.
How do developers evaluate it?
Check the endpoint, agent card, GitHub repository, capabilities, and safety notes below before connecting it to an agent workflow.

Description

Modular Rust SDK for x402 protocol. Client signing, server gating, facilitator settlement with dual-path ERC-3009/Permit2 transfers, MCP integration, and 44 built-in chain deployments.

Capabilities

Streaming ✗ Not supported
Push Notifications ✗ Not supported

Input Modes

text

Output Modes

text

Metadata



Created
Feb 22, 2026
Updated
Apr 12, 2026