Borrowing it
Nothing to install: this file belongs to adityasugandhi/skillsync-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/adityasugandhi/skillsync-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/adityasugandhi/skillsync-mcpWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/adityasugandhi/skillsync-mcp/claude-md)<a href="https://agentmods.dev/instructions/adityasugandhi/skillsync-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/adityasugandhi/skillsync-mcp/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/adityasugandhi/skillsync-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/adityasugandhi/skillsync-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.01276 | $0.01276 |
| Opus 5.5 | $0.00510 | $0.00510 |
| Sonnet 5.5 | $0.00255 | $0.00255 |
| Haiku 4.5 | $0.00128 | $0.00128 |
Grade A, and why
skillsync-mcp CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Project Overview
SkillSync MCP Server (@stranzwersweb2/skillsync-mcp) — a Model Context Protocol server that provides security-gated skill management for Claude Code. Users can search the SkillsMP marketplace, scan GitHub skill repos for 60+ threat patterns, install/uninstall skills to ~/.claude/skills/, and monitor installed skills with startup verification and live sync. Every installation is gated behind a security scan.
Development Commands
npm install # Install dependencies
npm run build # Compile TypeScript → build/
npm run dev # Watch mode (tsx watch src/index.ts)
npm run start # Run compiled server (node build/index.js)
npm run test # Run tests (requires prior build)
npm run test:build # Build + run tests (recommended)
Publishing: npm publish --access public (scoped package, prepublishOnly runs build automatically)
Architecture
Transport: MCP over stdio (StdioServerTransport). All logging goes to stderr.
Startup Sequence:
1. McpServer created
2. registerTools(server) — registers all 8 tools
3. server.connect(transport) — MCP is live, tools available
4. skillManager.initialize() — BACKGROUND (fire-and-forget)
4a. Discover skills in ~/.claude/skills/
4b. Security scan each skill via scanSkillContent()
4c. Start fs.watch for live additions/removals
5. Tools respond immediately; list_installed returns partial data if scan still running
Data Flow:
MCP Client (stdio) → tools.ts (8 tool handlers) → Business Logic → Response
├── api-client.ts (SkillsMP REST API)
├── security-scanner.ts (GitHub fetch + threat scan)
├── skill-manager.ts (installed skill registry + fs.watch)
├── installer.ts (filesystem + npm install)
└── sanitize.ts (output safety)
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 104 lines · 1,276 tokens per session scan A fd3c93f541ab
skillsync-mcp CLAUDE.md is an instructions file published in the GitHub repository adityasugandhi/skillsync-mcp (4 stars, last pushed 1mo ago), licensed MIT. It adds 1,276 tokens to every session, about $0.0051 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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