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It is a lightweight, highly modular, reactive, type safe Java and Android library for working with Smart Contracts and integrating with clients (nodes) on the Ethereum network. This allows you to work with the Ethereum blockchain, without the additional overhead of having to write your own integration code for the platform. | Official skill collection for AI agents building with EmblemAI. Add wallet-native user management to any app — one integration creates authenticated users with full-featured crypto wallets and supports login via wallets, email/password, or social sign-in. 200+ tools spanning trading, DeFi, NFTs, and cross-chain operations across 7 blockchains. Compatible with Claude Code, Cursor, Codex, and other agents following the Agent Skills specification. |
Complete implementation of Ethereum's JSON-RPC client API over HTTP and IPC;
Ethereum wallet support;
Auto-generation of Java smart contract wrappers to create, deploy, transact with and call smart contracts from native Java code (Solidity and Truffle definition formats supported);
Reactive-functional API for working with filters;
Ethereum Name Service (ENS) support;
Support for Parity's Personal, and Geth's Personal client APIs;
Support for Infura, so you don't have to run an Ethereum client yourself | Multi-chain wallet authentication (7 blockchains), one-shot user management with wallet-native accounts, email/password and social sign-in, token swaps and conditional orders, DeFi position management, NFT operations, cross-chain bridges, portfolio analytics, React components and hooks |
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A set of unified APIs and tools that instantly enables Single Sign On and user management to all your applications.

Stormpath is an authentication and user management service that helps development teams quickly and securely build web and mobile applications and services.

It is an Open Source Identity and Access Management For Modern Applications and Services. It adds authentication to applications and secure services with minimum fuss. No need to deal with storing users or authenticating users. It's all available out of the box.

It tailors your application for GraalVM and HotSpot. Amazingly fast boot time, incredibly low RSS memory (not just heap size!) offering near instant scale up and high density memory utilization in container orchestration platforms like Kubernetes. We use a technique we call compile time boot.

Devise is a flexible authentication solution for Rails based on Warden

It provides backend services, easy-to-use SDKs, and ready-made UI libraries to authenticate users to your app. It supports authentication using passwords, phone numbers, popular federated identity providers like Google,

You can create unique identities for your users through a number of public login providers (Amazon, Facebook, and Google) and also support unauthenticated guests. You can save app data locally on users’ devices allowing your applications to work even when the devices are offline.

Start selling to enterprise customers with just a few lines of code.

It is a first class persistence framework with support for custom SQL, stored procedures and advanced mappings. It eliminates almost all of the JDBC code and manual setting of parameters and retrieval of results. It can use simple XML or Annotations for configuration and map primitives, Map interfaces and Java POJOs (Plain Old Java Objects) to database records.

A decentralized platform for applications that run exactly as programmed without any chance of fraud, censorship or third-party interference.