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x402

0.1.0
0.5.0 0.4.1 0.4.0 0.3.3 0.3.2 0.3.1 0.3.0 0.1.0

Elixir SDK for the x402 HTTP payment protocol

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x402 CHANGELOG.md
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CHANGELOG.md 

# Changelog



All notable changes to this project will be documented in this file.



The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),

and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).



## [Unreleased]



## [0.1.0] - 2026-02-14



### Added



- `X402.PaymentRequired` — encode/decode `PAYMENT-REQUIRED` headers (Base64 JSON)

- `X402.PaymentSignature` — decode/validate `PAYMENT-SIGNATURE` headers

- `X402.PaymentResponse` — encode `PAYMENT-RESPONSE` settlement headers

- `X402.Facilitator` — GenServer client for facilitator `/verify` and `/settle` endpoints

- `X402.Facilitator.HTTP` — HTTP transport with retry logic and telemetry

- `X402.Plug.PaymentGate` — drop-in Plug middleware for payment gating

- `X402.Wallet` — EVM and Solana wallet address validation

- Comprehensive test suite with >90% coverage

- Full ExDoc documentation with guides