HSM Kit MCP server

by hsm-kit·io.github.hsm-kit/hsmkit·v0.1.0·4 stars

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Local-first Base64, Luhn, key-component XOR, and synthetic ISO-0 PIN block tools.

A86/100grade A

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Safety scan

A86/100

full report

Adoption

Growing

4 stars54 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

HSM Kit tools (6)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

base64_decode
Decode standard Base64 into UTF-8 text.
base64_encode
Encode UTF-8 text as standard Base64.
iso0_pin_block
Generate an ISO 9564-1 format 0 clear PIN block from synthetic PIN and PAN test data.
luhn_calculate_check_digit
Calculate the Luhn (Mod 10) check digit for a digits-only payload.
luhn_validate
Validate a complete number using the Luhn (Mod 10) algorithm.
xor_key_components
XOR equal-length hexadecimal key components for synthetic interoperability tests.

Public scan report

scanner v0.1.10 · 2026-11-03 · same rubric, same numbers if you re-run it

no findings

Code scan8 source files scanned25/25
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitylocal package, no credentials required12/15
Maintenancelast push 41 days ago12/15
Maintainer identityregistry namespace matches repository owner7/10

Overall 86/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

How HSM Kit compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score: 86/100; higher than 72% of 48,255 servers
Tools: 6; the typical server has 7
Tools that change things: 0%; typical: 0%. Fewer write tools means less an agent can break
GitHub stars: 4; more than 82% of 28,688 servers
Downloads a week: 54; more than 45% of 12,191 servers with a package

What its tools let an agent do: 6 read

Install HSM Kit in Claude Code, Cursor or VS Code

Runs npx -y @hsmkit/mcp-server on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add hsmkit -- npx -y @hsmkit/mcp-server

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What the publisher says

From the HSM Kit repository's README, as published. We do not edit it. Read it on GitHub

HSM Kit - Professional Online Encryption Toolkit

🔐 Professional encryption & key management tools, 100% client-side, secure & reliable

📖 Introduction

HSM Kit is a professional online encryption toolkit designed for developers, testers, and security engineers in finance, payment, and security domains. It provides 44+ tools covering HSM key management, payment security, PKI certificates, and cryptographic algorithms, all running entirely in the browser.

Core Values

Security First - 100% client-side computation, keys and sensitive data never leave your device
Professional & Complete - 44+ tools covering HSM key management, payment security, PKI certificates, and cryptographic algorithms
Ready to Use - Open browser and start working, supports PWA installation, works on Mac/Windows/Linux/mobile
Open Source - Code is publicly auditable, meets financial industry compliance requirements

✨ Features

🛠️ Tool Modules

🔐 Encryption/Decryption Tools (5)

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

HSM Kit: common questions

Is HSM Kit MCP server safe?: Yes, by our scan: it is graded A (86/100). Read the HSM Kit safety report
How do I install HSM Kit?: It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does HSM Kit need an API key?: Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is HSM Kit maintained?: The last commit was 42 days ago (2026-09-23). The latest release is v0.1.0.
How does HSM Kit compare with other MCP servers?: safety score 86/100 (higher than 72% of 48,255 servers); tools 6 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.