> ## Documentation Index
> Fetch the complete documentation index at: https://cosmos-docs-sync-security-docs.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Tooling & Resources

> Tools, libraries, wallets, and explorers for building on Cosmos EVM.

Cosmos EVM implements a complete Ethereum execution environment, so the standard development toolchain carries over without modification. You can use any of the EVM tools you already know; just point them at your chain's RPC endpoint and chain ID.

## Development Tools

The following tools are a few examples of the many tools that are available for development on Cosmos EVM:

| Tool                                                              | Description                                                                                                        |
| ----------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------ |
| [Hardhat](https://hardhat.org)                                    | JavaScript/TypeScript-based framework with a flexible plugin system and Ethers.js integration.                     |
| [Foundry](https://book.getfoundry.sh)                             | Rust-based toolkit with Solidity-native tests and fast execution. Includes `forge`, `cast`, `anvil`, and `chisel`. |
| [OpenZeppelin Contracts](https://docs.openzeppelin.com/contracts) | Audited implementations of common standards — ERC-20, ERC-721, access control, and more.                           |

## Client Libraries

| Library                                  | Description                                                                                               |
| ---------------------------------------- | --------------------------------------------------------------------------------------------------------- |
| [Ethers.js](https://docs.ethers.org/v6/) | JS/TS library for contract interaction, transaction signing, and provider management.                     |
| [Viem](https://viem.sh)                  | TypeScript-first, tree-shakeable library for RPC calls, ABI encoding, and contract access. Used by Wagmi. |
| [Wagmi](https://wagmi.sh)                | React hooks for wallet connection, chain state, and contract reads/writes. Built on Viem.                 |
| [RainbowKit](https://www.rainbowkit.com) | React component library for wallet connection UI. Integrates with Wagmi.                                  |

## Wallets

See the [quick-start guide](/evm/latest/documentation/getting-started/build-a-chain/quick-start#connect-a-wallet) for a walkthrough of connecting MetaMask to a local chain. The following are a few examples of the many wallets that are available for development on Cosmos EVM:

| Wallet                                     | Notes                                                 |
| ------------------------------------------ | ----------------------------------------------------- |
| [MetaMask](https://metamask.io)            | Add network via Settings → Networks                   |
| [Rabby](https://rabby.io)                  | Add network via Settings → Networks                   |
| [WalletConnect](https://walletconnect.com) | Standard WalletConnect integration                    |
| [Keplr](https://www.keplr.app)             | Supports both Cosmos and Ethereum transaction formats |
| [Leap](https://www.leapwallet.io)          | Supports both Cosmos and Ethereum transaction formats |
| Ledger                                     | Compatible via MetaMask or other wallet interfaces    |

To add a chain manually, you'll need: the network name, RPC URL (port 8545), chain ID, and currency symbol.

## Block Explorers

Cosmos EVM chains support two types of explorer: EVM explorers for Ethereum-formatted data and Cosmos explorers for Cosmos and IBC data. [Mintscan](https://mintscan.io) supports both but requires a custom integration.

| Explorer   | Type   | Link                                                       |
| ---------- | ------ | ---------------------------------------------------------- |
| Blockscout | EVM    | [GitHub](https://github.com/blockscout/blockscout)         |
| Ping.pub   | Cosmos | [GitHub](https://github.com/ping-pub/explorer)             |
| BigDipper  | Cosmos | [GitHub](https://github.com/forbole/big-dipper-2.0-cosmos) |

## Testing & Analysis

| Tool                                                                                   | Purpose                                                                    |
| -------------------------------------------------------------------------------------- | -------------------------------------------------------------------------- |
| [Slither](https://github.com/crytic/slither)                                           | Static analysis — detects common vulnerability patterns in Solidity.       |
| [solidity-coverage](https://github.com/sc-forks/solidity-coverage)                     | Reports untested code branches. Works with Hardhat and Foundry.            |
| [Echidna](https://github.com/crytic/echidna)                                           | Property-based fuzzer for Solidity contracts.                              |
| [OpenZeppelin Test Helpers](https://github.com/OpenZeppelin/openzeppelin-test-helpers) | Time manipulation, event assertions, and revert testing for Hardhat/Mocha. |