Ethereum Keystore Encryption
Exposes Web3 Secret Storage operations for managing encrypted Ethereum private keys through the MCP protocol. You get nine tools covering keystore encryption and decryption with both scrypt and PBKDF2, password changes, validation, and address extraction without needing to decrypt. The server handles reading and writing keystore JSON files to disk, so you can generate new wallets directly as encrypted keystores or work with existing ones. Part of a five-server suite from the ethereum-wallet-toolkit, this one focuses specifically on the cold storage workflow: keeping private keys encrypted at rest and only decrypting when you need to sign. Includes 74 tests covering the encryption formats and file operations.
- tools
- 8
- transport
- STDIO
- last updated
- Jan 20, 2026
Tools
8 toolsPublic tool metadata for what this MCP can expose to an agent.
encrypt_keystoreCreate encrypted keystore from private key
Create encrypted keystore from private key
No parameter schema in public metadata yet.
decrypt_keystoreDecrypt keystore to get private key
Decrypt keystore to get private key
No parameter schema in public metadata yet.
change_keystore_passwordRe-encrypt with new password
Re-encrypt with new password
No parameter schema in public metadata yet.
validate_keystoreVerify keystore structure
Verify keystore structure
No parameter schema in public metadata yet.
get_keystore_addressExtract address without decryption
Extract address without decryption
No parameter schema in public metadata yet.
generate_encrypted_walletCreate new wallet as keystore
Create new wallet as keystore
No parameter schema in public metadata yet.
read_keystore_fileRead keystore from filesystem
Read keystore from filesystem
No parameter schema in public metadata yet.
write_keystore_fileSave keystore to filesystem
Save keystore to filesystem
No parameter schema in public metadata yet.
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Ethereum Wallet Toolkit
A collection of Ethereum wallet tools: Python CLI utilities (eth_toolkit.py, wallet.py, keystore.py, sign.py, transaction.py, typed_data.py, validate.py, vanity.py), five Model Context Protocol (MCP) servers exposing wallet functionality to AI assistants, a fully offline single-file HTML wallet (offline.html), and an x402 payment facilitator. See the sections below for each component.
Offline Build - Official Ethereumjs Libraries
This directory contains the build system to create offline1.html using official ethereumjs libraries.
Libraries Used
All libraries are from the official Ethereum ecosystem:
@ethereumjs/tx- Transaction signing (legacy + EIP-1559)@ethereumjs/util- Utilities (address validation, checksums, etc.)@ethereumjs/rlp- RLP encoding@ethereumjs/wallet- Wallet utilitiesethereum-cryptography- Official cryptographic primitives (secp256k1, keccak256)@scure/bip39- BIP39 mnemonic (used by ethereumjs)@scure/bip32- BIP32 HD derivation (used by ethereumjs)
Build Instructions
# Navigate to this directory
cd offline-build
# Install dependencies
npm install
Details
- Repository
- github.com/nirholas/ethereum-wallet-toolkit
- Categories
- Data & Analytics, Finance & Commerce
- Package
keystore-mcp-server- Transport
- STDIO
- Registry
- MCP registry, active
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