4da-mcp-server

dbhub

Zero-dependency, token-efficient database MCP server for Postgres, MySQL, SQL Server, MariaDB, SQLite.

3.3K stars

Gmail-MCP-Server

Lean Gmail MCP server with auto authentication support

214 stars

Crawlie

Technical SEO + GEO (AI-search) site audits: hosted crawls, prioritized fixes, report diffs.

96 stars

claude-security

Deep vulnerability scanning of your own code, run entirely inside your Claude Code session at a chosen effort tier, with every finding challenged before it is reported and the verification tally computed in code. Turns surviving findings into targeted patches, each verified by a panel of agents, tha

32.9K stars

claude-md-management

Tools to maintain and improve CLAUDE.md files - audit quality, capture session learnings, and keep project memory current.

32.9K stars

math-olympiad

Solve competition math (IMO, Putnam, USAMO) with adversarial verification that catches what self-verification misses. Fresh-context verifiers attack proofs with specific failure patterns. Calibrated abstention over bluffing.

32.9K stars

ECC

The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.

235.3K stars

plugin-structure

This skill should be used when the user asks to "create a plugin", "scaffold a plugin", "understand plugin structure", "organize plugin components", "set up plugin.json", "use ${CLAUDE_PLUGIN_ROOT}", "add commands/agents/skills/hooks", "configure auto-discovery", or needs guidance on plugin director

32.8K stars

claude-md-improver

Audit and improve CLAUDE.md files in repositories. Use when user asks to check, audit, update, improve, or fix CLAUDE.md files. Scans for all CLAUDE.md files, evaluates quality against templates, outputs quality report, then makes targeted updates. Also use when the user mentions "CLAUDE.md maintena

32.8K stars

ECC

The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.

235.3K stars

architecture-critic

Reviews proposed target architectures and transformed code against modern best practice. Adversarial — looks for over-engineering, missed requirements, and simpler alternatives.

32.8K stars

code-architect

Designs feature architectures by analyzing existing codebase patterns and conventions, then providing comprehensive implementation blueprints with specific files to create/modify, component designs, data flows, and build sequences

32.8K stars

feature-dev

Guided feature development with codebase understanding and architecture focus

32.8K stars

modernize-harden

Security vulnerability scan with a reviewable remediation patch — OWASP, CWE, CVE, secrets, injection

32.8K stars

modernize-transform

Transform one legacy module to the target stack — idiomatic rewrite with behavior-equivalence tests

32.8K stars