Code graph MCP server. SQLite + tree-sitter AST for architecture, clones, references, and flows.
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Hex Graph MCP Server is an MCP server that code graph MCP server. SQLite + tree-sitter AST for architecture, clones, references, and flows. Its tool list has not been published yet over stdio, requires no API key, and scores 93/100 on MCPpedia's security, maintenance and efficiency rubric.
Config is the same across clients — only the file and path differ.
{
"mcpServers": {
"io-github-levnikolaevich-hex-graph-mcp": {
"args": [
"-y",
"skills"
],
"command": "npx"
}
}
}Are you the author?
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7 plugins. One marketplace. Install only what you need and automate your full delivery workflow — > from project bootstrap to code audit to production quality gates. > Works standalone or as a complete Agile pipeline.
Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.
npx -y 'skills' 2>&1 | head -1 && echo "✓ Server started successfully"
After testing, let us know if it worked:
Five weighted categories — click any category to see the underlying evidence.
No known CVEs.
Checked skills against OSV.dev.
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A compact marketplace of standalone engineering skills for Claude Code and Codex.
Supports the portable Agent Plugins v1 standard while retaining native Claude Code and Codex distribution compatibility.
Why this repository is intentionally small: Earlier coding models needed a large orchestration and evaluation harness to follow complex workflows reliably. Modern Claude and Codex models work better with concise procedural guidance, so that machinery has been removed. These skills retain only the domain knowledge, decision gates, tool guidance, and evidence checklists worth bringing into context.
Browse the skills catalog or install only the plugins you need below.
The repository intentionally contains only the skills, minimal plugin manifests, two host-specific marketplace catalogs, documentation, and a static catalog site. It has no MCP servers, orchestration hierarchy, distributed shared resources, generated skill copies, or evaluation harness.
| Index | Skill | Purpose |
|---|---|---|
| 11 | Plan Reviewer | Validate an implementation plan against repository evidence before execution. |
| 12 | Delivery Reviewer | Review completed code through independent risk-selected perspectives. |
| Index | Skill | Purpose |
|---|---|---|
| 21 | Documentation Auditor | Audit documentation trust, coverage, structure, and factual accuracy. |
| 22 | Codebase Auditor | Audit cross-cutting code health, security, delivery, and maintainability. |
| 23 | Test Suite Auditor | Audit test value, coverage, isolation, and oracle strength. |
| 24 | Architecture Auditor | Audit system boundaries, ownership, contracts, and dependency topology. |
| 25 | Persistence Auditor | Audit queries, transactions, consistency, and resource lifecycle. |
| Index | Skill | Purpose |
|---|---|---|
| 31 | Performance Optimizer | Profile, experiment, and keep only measured improvements. |
| 32 | Dependency Upgrader | Upgrade dependencies in reversible, verified batches. |
| 33 | Code Modernizer | Replace or simplify bounded capabilities when net value is proven. |
| 34 | Benchmark Comparator | Compare alternatives with a frozen, reproducible experiment contract. |
| 35 | Surgical Change Implementer | Implement a bounded change through the smallest complete root-cause solution. |
| Index | Skill | Purpose |
|---|---|---|
| 41 | Test Strategy Planner | Design a risk-based, decision-complete test strategy without changing code. |
| 42 | Acceptance Test Builder | Create reproducible acceptance tests through observable product boundaries. |
| Index | Skill | Purpose |
|---|---|---|
| 51 | Opportunity Evaluator | Compare product opportunities using curren |