Borrowing it
Nothing to install: this file belongs to lyupro/skillforge-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/lyupro/skillforge-mcp/master/CLAUDE.mdgit clone --depth 1 https://github.com/lyupro/skillforge-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/lyupro/skillforge-mcp/claude-md)<a href="https://agentmods.dev/instructions/lyupro/skillforge-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/lyupro/skillforge-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/lyupro/skillforge-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/lyupro/skillforge-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 | $0.02514 | $0.02514 |
| Opus 5.5 | $0.01006 | $0.01006 |
| Sonnet 5.5 | $0.00503 | $0.00503 |
| Haiku 4.5 | $0.00251 | $0.00251 |
Grade A, and why
skillforge-mcp CLAUDE.md scanned grade A with 1 finding 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 1mo 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.
Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
- **Custom sandbox** — pass a custom `SandboxRunner` to `ScriptStrategy` via constructor injection. Default `node:child_process` implementation enforces env whitelist + temp cwd; OS-level isolation (Docker/firecracker) i How it starts
The opening of the file, as written. The whole thing — 117 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md — SkillForge MCP
This file provides guidance to Claude Code (claude.ai/code) when working in this repository.
Project overview
SkillForge MCP — universal Model Context Protocol server that exposes Markdown skills from arbitrary user-configured folders to any MCP-capable LLM tool (Claude Code, OpenAI Codex CLI, Cursor, custom clients via @modelcontextprotocol/sdk).
Goals: replace per-tool auto-loading of 100+ skills with lazy-by-design MCP discovery, save ~4380 tokens per session init, work across LLM tools through a single config.
Strategic context: standalone open-source product under the Lyu Pro brand. Branded GitHub repo lyupro/skillforge-mcp + npm package @lyupro/skillforge-mcp + listing in lyupro/llm-plugins-marketplace (own marketplace, Variant B). v1.0.0 prep ✅ landed on master — v1.0.0 version stamped across package.json / plugin.json / manifest.json, CHANGELOG.md + RELEASE_NOTES.md + docs/PUBLISHING.md runbook + marketing/copy/ (Twitter / LinkedIn / Reddit / Show HN drafts). Sibling marketplace repo lyupro/llm-plugins-marketplace (scaffolded locally, separate git history) lists SkillForge in marketplace.json. External publish actions (GitHub release + npm publish + marketplace push + landing paste + social posts) await operator hand-off.
Sibling repo, not nested. This project sits parallel to the parent project's repo on disk; they share no git history.
Source of truth for the plan: this repo's !Plans/ directory (gitignored — local working notes, never pushed). Active ledger: !Plans/Plan_12_SkillForge_MCP_v2.md; older history in !Plans/Archive/. Always re-read it before non-trivial changes — design rationale, stages, acceptance criteria live there.
Stack
- Language: TypeScript, ESM (
"type": "module",module: NodeNext). - Runtime: Node.js >= 20.
- Package manager: pnpm.
- MCP SDK:
@modelcontextprotocol/sdk(stdio transport). - Parsing:
gray-matterfor YAML frontmatter, Zod for runtime validation. - Filesystem watching:
chokidar. - Tests: Vitest +
@vitest/coverage-v8. Coverage gate 80% on core modules (parser/registry/strategies). - Pre-commit:
simple-git-hooksrunsnode scripts/check-file-size.mjs --error.
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.
- 1mo ago First seen · 117 lines · 2,514 tokens per session scan A d38602954524
skillforge-mcp CLAUDE.md is an instructions file published in the GitHub repository lyupro/skillforge-mcp (2 stars, last pushed 2mo ago), licensed MIT. It adds 2,514 tokens to every session, about $0.0101 per session on Opus 5.5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.