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

by antonpk1 · MCP Server · ★ 214

Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h

How to install gibber-mcp

git clone https://github.com/anton10xr/gibber-mcp

Taken from the project's README on GitHub.

Security audit verdict: SAFE · quality 76/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours.

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

Quick Facts

Stars214
Forks23
LanguageJavaScript
CategoryMCP Server
Quality Score76/100
Open Issues5
Last Updated2025-03-03
Created2025-03-02
Platformsmcp, node
Est. Tokens~3k

About gibber-mcp

Tiny Cryptography MCP Server A Model Context Protocol server built with Express.js that provides cryptographic tools including key pair generation, shared secret derivation, and message encryption/decryption.

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

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