Ethereum Keystore Encryption

Name: Ethereum Keystore Encryption
Author: nirholas

by nirholasversion 1.0.0i★ 29 (Stars for the whole repo)iRuns on your computer

Registry nameio.github.nirholas/keystore-mcp-server

How to install

What it does

Encrypt/decrypt Ethereum keystore JSON V3 with scrypt/PBKDF2 for secure cold storage

Connects Runs on your computer
Account or key No key needed
Category Crypto & blockchain

Install

Pick the AI app you use, then copy the settings.

Passed 2/3 checks · Runs on your computer · ✓ Commands checked Nov 13, 2026

First: which AI do you use?

ClaudeWeb · app · phoneChatGPTWebClaude CodeTerminalCursorCode editorVS CodeCode editorOtherOther apps

Pick your app and the steps appear below.

Works with Claude, with some setup first

Install Python (uv) on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone

Install Python (uv)
One time only; it works for every server that needs Python (uv)
Open the Python (uv) download page ↗
Done
Open the Claude desktop app’s settings file
SettingsDeveloperEdit Config
Done

Paste these settings and save the file

{
  "mcpServers": {
    "keystore": {
      "command": "uvx",
      "args": [
        "keystore-mcp-server"
      ]
    }
  }
}

Done

Quit Claude and open it again
Done
Try it
Use Ethereum Keystore Encryption and tell me what you can do for me, then show me one thing
✓ If Claude says it is using Ethereum Keystore Encryption or shows a Ethereum Keystore Encryption tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

ChatGPT cannot connect Ethereum Keystore Encryption yet

Ethereum Keystore Encryption runs on your computer, but ChatGPT can only connect servers that run on the web

What you can do instead

A · Use an app that can connect Ethereum Keystore Encryption

Steps for Claude →Install Python (uv) on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
Steps for Claude Code →Install Python (uv) on your computer first (one time)
Steps for Cursor →Install Python (uv) on your computer first (one time)
Steps for VS Code →Install Python (uv) on your computer first (one time)

B · Others in Crypto & blockchain that work with ChatGPT

Picked from the most used in the same category, only ones that connect by address with no key

Solana MCP by Vybe✓ ChatGPT
0xinsider✓ ChatGPT
Highwire✓ ChatGPT

Works with Claude Code, with some setup first

Install Python (uv) on your computer first (one time)

Install Python (uv)
One time only; it works for every server that needs Python (uv)
Open the Python (uv) download page ↗
Done
Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done

Paste this command and press Enter

claude mcp add --scope user keystore -- uvx keystore-mcp-server

Done

Type /mcp in Claude Code
You should see Ethereum Keystore Encryption listed as connected
Done
Try it
Use Ethereum Keystore Encryption and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using Ethereum Keystore Encryption or shows a Ethereum Keystore Encryption tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor, with some setup first

Install Python (uv) on your computer first (one time)

Install Python (uv)
One time only; it works for every server that needs Python (uv)
Open the Python (uv) download page ↗
Done
Click this button to open Cursor
Open in Cursor
Cursor asks you to confirm; click Install
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use Ethereum Keystore Encryption and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using Ethereum Keystore Encryption or shows a Ethereum Keystore Encryption tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code, with some setup first

Install Python (uv) on your computer first (one time)

Install Python (uv)
One time only; it works for every server that needs Python (uv)
Open the Python (uv) download page ↗
Done
Click this button to open VS Code
Open in VS Code
VS Code asks you to confirm; click Install
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use Ethereum Keystore Encryption and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using Ethereum Keystore Encryption or shows a Ethereum Keystore Encryption tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

JSON settings are under “For developers” below

Stuck? Ask people who use Ethereum Keystore Encryption💬 Discussion →

For developers: Terminal commands and JSON settings

Installed on your computer

Claude Code

claude mcp add --scope user keystore -- uvx keystore-mcp-server

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "keystore": {
      "command": "uvx",
      "args": [
        "keystore-mcp-server"
      ]
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "keystore": {
      "command": "uvx",
      "args": [
        "keystore-mcp-server"
      ]
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "keystore": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "keystore-mcp-server"
      ]
    }
  }
}

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

At a glance

GitHub stars i: 29 (Stars for the whole repo)
This repo holds several MCP listings; its stars count once in rankings
Downloads per weeki: 33/wk
Licence i: No licence stated
Connection: Runs on your computer
Transport: stdio
Latest versioni: 1.0.0
Categoryi: Crypto & blockchain
Published to registryi: Jan 20, 2026
Code last changedi: Nov 13, 2026
Maker: nirholas
Packages: pypi: keystore-mcp-server
Repo: nirholas/ethereum-wallet-toolkit
Registry status: Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Run on your computer in

Claude Goose LM Studio Msty Studio Cherry Studio Cursor VS Code + GitHub Copilot Visual Studio Windsurf (Devin Desktop)Zed Kiro Cline Continue JetBrains AI Assistant Claude Code Codex CLI Gemini CLI OpenCode nodecode Warp LibreChat Raycast

All apps, with pros and cons →

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 13, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account nirholas, which owns the repo
✓ Pass
Still maintained
Code last changed today
! Caution
Has a licence
GitHub could not identify the licence type; open the file to check
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

User reviews

No reviews yet

Compared with others in Crypto & blockchaini

More stars than 0% of the other 1672 servers in this category
Published to the registry more recently than 0% of the other 1672 servers in this category
Basic checks equal to or better than 50% of the other 1672 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Ethereum Keystore Encryption safe?

It passed 2 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed today, and the latest version (1.0.0) reached the registry 10 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.

What can I use instead?

In the same category: Solana MCP by Vybe, Oracle3 prediction-market arbitrage checks, Polymarket Paper Trader

Others in the same category

Servers in the same category from other makers, sorted by stars.

Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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Runs in the cloud

How to connect

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by YichengYang-EthanGrowing↓ 35/wk★ 569Updated 43 days ago

Runs on your computer

Install

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Runs on your computer

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Keystore MCP Server

A Model Context Protocol (MCP) server for Ethereum keystore encryption, decryption, and management following the Web3 Secret Storage Definition Version 3 standard.

Features

Tools (9)

`encrypt_keystore` - Encrypt private key to Web3 Secret Storage V3 format
`decrypt_keystore` - Decrypt keystore to recover private key
`save_keystore_file` - Save keystore with standard Ethereum naming
`load_keystore_file` - Load and validate keystore files
`get_keystore_info` - Extract metadata without decryption
`validate_keystore` - Validate keystore structure
`change_keystore_password` - Change password and optionally upgrade KDF
`batch_encrypt_keystores` - Encrypt multiple wallets
`keystore_to_private_key_file` - Export decrypted private key (dangerous)

Resources (4)

`keystore://specification` - Web3 Secret Storage V3 specification
`keystore://security-guide` - Security best practices
`keystore://kdf-comparison` - Scrypt vs PBKDF2 comparison
`keystore://examples/{type}` - Example keystores

Prompts (4)

`secure_wallet_backup` - Guided backup creation
`keystore_migration` - Migration from legacy formats
`keystore_recovery` - Recovery assistance
`keystore_security_audit` - Security audit workflow

Installation

pip install -e .

Or with dev dependencies

pip install -e ".[dev]"

Usage

Running the Server

keystore-mcp-server

Claude Desktop Configuration

"mcpServers": { "keystore": { "command": "keystore-mcp-server" } } }

Cryptographic Standards

Web3 Secret Storage V3

KDF: scrypt (recommended) or pbkdf2
Cipher: AES-128-CTR
MAC: Keccak-256
UUID: Version 4

Default Scrypt Parameters

Parameter	Value	Description
N	262144 (2^18)	CPU/memory cost
r	8	Block size
p	1	Parallelization
dklen	32	Derived key length

Default PBKDF2 Parameters

Parameter	Value	Description
c	262144	Iterations
prf	hmac-sha256	PRF
dklen	32	Derived key length

Security

⚠️ Important Security Notes:

Never share keystore passwords - Treat like private keys
Use strong passwords - Minimum 12 characters, mixed case, numbers, symbols
Secure file storage - Files created with 0600 permissions
Air-gapped operations - Use offline for high-value wallets
Backup keystores - Store encrypted backups in multiple locations

Examples

Encrypt a Private Key

result = await encrypt_keystore(

private_key="0x...", password="strong-password-123", kdf="scrypt" )

Decrypt a Keystore

result = await decrypt_keystore(

keystore=keystore_json, password="strong-password-123" )

Save Keystore File

result = await save_keystore_file(

keystore=keystore_json, directory="./keystores" )

Creates: UTC--2024-01-15T10-30-00.000Z--address.json

Testing

pytest tests/ -v

License

MIT License

Ethereum Keystore Encryption

What it does

Install

Install Python (uv)

Open the Claude desktop app’s settings file

Paste these settings and save the file

Quit Claude and open it again

Try it

What you can do instead

Install Python (uv)

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Install Python (uv)

Click this button to open Cursor

Open the AI chat in Cursor in Agent mode

Try it

Install Python (uv)

Click this button to open VS Code

Open the AI chat in VS Code in Agent mode

Try it

Installed on your computer

At a glance

Which apps can use it

Related guides

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Discussion

User reviews

Compared with others in Crypto & blockchaini

Common questions

Others in the same category

Solana MCP by Vybe

Oracle3 prediction-market arbitrage checks

Polymarket Paper Trader

README from the maker

Keystore MCP Server

Features

Tools (9)

Resources (4)

Prompts (4)

Installation

Or with dev dependencies

Usage

Running the Server

Claude Desktop Configuration

Cryptographic Standards

Web3 Secret Storage V3

Default Scrypt Parameters

Default PBKDF2 Parameters

Security

Examples

Encrypt a Private Key

Decrypt a Keystore

Save Keystore File

Creates: UTC--2024-01-15T10-30-00.000Z--address.json

Testing

License