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Go implementation of the Ethereum protocol

Ultimate Solidity, Blockchain, and Smart Contract - Beginner to Expert Full Course | Python Edition

Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.

A fast and lightweight interactive terminal based UI application for tracking cryptocurrencies 🚀 by @miguelmota

Kelp is a free and open-source trading bot for the Stellar DEX and 100+ centralized exchanges

The Blockstack Browser

Threshold Signature Scheme, for ECDSA and EDDSA

Viewer of Ethereum tokens and transactions based on ERC20 standard.

👩‍🏫 👨‍🏫 The open-source curriculum of Enki!

Algorand Smart Contracts in Python

blockchain (crypto) tools, libraries & scripts in ruby

Fully automated token deployment on ETH, using ChatGPT and DALL-E.

💸 Crypto Payments straight to your wallet. DePay simplifies Web3 integration for developers, harnessing DeFi to accept any token effortlessly. Integrate frictionless, real-time token conversion with sleek, customizable widgets designed for seamless user experience.

Ciri is an Ethereum implementation written in Ruby.

Interact with ethereum and EVM based chains via Zig!

Zig Ethereum client library. Faster than alloy.rs on 18/26 benchmarks.

Public SDK, CLI, and docs for Hive Intelligence: crypto MCP access for AI agents.

Official CoinPaprika API Python client — coin prices, OHLCV, exchanges, and global market stats.

Digital Cash Envelope for the Internet

The most comprehensive MCP server for Polymarket — 48 tools spanning direct trading, market discovery, smart money tracking, copy trading, backtesting, risk management, and portfolio optimization. Works with Claude Code, Cursor, or any MCP-compatible client.

A toolkit combining Solidity testing and cross-chain deployment tools with Robot Framework. Also some basic components for monitoring EVM compatible blockchains.

Official DexPaprika Python SDK: Pythonic access to cross-chain DEX data, prices, and pools with type hints and caching.

Blockchain for a record management and money transfer system

High-performance EVM in Zig with wave-based parallel transaction execution (5-6x speedup).

MCP server for Azeth — smart accounts, payments, reputation, and discovery tools for AI agents

50 standard Bitcoin tools for MCP agents, with 6 prompts and 8 resources. Uses a local node or explicitly configured compatible API.

EVM blockchain intelligence toolkit for AI agents — 23 MCP tools across 7 chains (Ethereum, Polygon, Arbitrum, Base, Optimism, Avalanche, BSC). Zero config.

Permissionless wallet infrastructure for AI agents. Create wallets, sign transactions, and broadcast on EVM + Solana. Pay and accept x402 payments. Built-in guards. No KYC. Up to 50% less expensive than Coinbase.

ZeiCoin is a minimalist cryptocurrency blockchain written in Zig with cumulative proof-of-work consensus, CPU mining and peer-to-peer networking.

MCP server for DeFi execution — lets AI agents swap, provide liquidity, lend, bridge, and run yield strategies across 22 chains