Hexdump MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 550 installs a week from npm. Last commit 28 Oct 2026.
Classic hex dumps and byte stats offline: dump text, hex or base64 and convert between them
Today is the operative word: we check Hexdump MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add hexdump-mcp -- npx -y @mrfentmen/hexdump-mcp
{
"mcpServers": {
"hexdump-mcp": {
"command": "npx",
"args": [
"-y",
"@mrfentmen/hexdump-mcp"
]
}
}
}
[mcp_servers.hexdump-mcp]
command = "npx"
args = ["-y", "@mrfentmen/hexdump-mcp"]
{
"mcpServers": {
"hexdump-mcp": {
"command": "npx",
"args": [
"-y",
"@mrfentmen/hexdump-mcp"
]
}
}
}
{
"servers": {
"hexdump-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@mrfentmen/hexdump-mcp"
]
}
}
}
URL and encoding work offline: parse a URL, percent-encode or decode text, and convert base64 both
Convert between HEX, RGB, HSL color formats and generate palettes
Convert documents between text formats (markdown, html, and more) via the FileChanger API.
Pass the baton between coding agents: convert sessions across Claude Code, OpenCode, Codex & more.
Offline Basecoat UI MCP: templates, macro layouts, theming contract, and static validation.
base64, hashing, regex, word count, JWT decode and CSS unit conversion. Deterministic, offline.
Computes MD5, SHA1, SHA256, SHA512, and CRC32 digests from text, base64, or hex input.
Convert 100+ units offline: length, mass, temperature, volume, area, speed, data and time
Answers built from our own checks of this server.