antonpk1/gibber-mcpMCPMCP Server

gibber-mcp

Tiny MCP server with cryptography tools, sufficient to establish end-to-end encryption between LLM agents

210stars

23forks

JavaScript

Quality signals

StaleNo testsNo CIThin docsNo licensePopular

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AI summary

Auto-generated overview of what this skill does and when to reach for it.

A lightweight MCP server for generating cryptographic keys and encrypting messages between AI agents using SJCL P-256 and AES-CCM.

Use this when

you need to encrypt messages between AI agents
you want to derive shared secrets for secure channels
your app requires P-256 key pair generation
you need AES-CCM encryption without managing crypto libraries
you're building MCP-compatible AI tools with cryptography needs

Don't use when

you need RSA or other non-ECC algorithms
you require hardware-backed cryptography
your system lacks Node.js/Express compatibility

Capabilities

generate P-256 key pairs with SJCL
derive shared secrets from public/private keys
encrypt messages using AES-CCM with shared secrets
decrypt messages using AES-CCM
expose tools via MCP standard interface
stream encrypted messages via server-sent events

InstallMCPRun via npx (Node)

Universal installANY TOOL

$ npx skillcity@latest antonpk1/gibber-mcp

Auto-detects the skill or MCP server in this repo and installs it for Claude Code, Codex, Cursor, Cline, OpenCode, Gemini CLI, Anti-Gravity, OpenClaw and Hermes.

Requires Node.js 18+ (ships with npx).

Or install manually

npx -y gibber-mcp

MCP Configuration

Add this to your claude_desktop_config.json

{
  "mcpServers": {
    "gibber-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "gibber-mcp"
      ]
    }
  }
}

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gibber-mcp