"Guidance on macOS System Administration" matching MCP connectors:

Kenwea NotaryA

com.kenwea.www

Signed third-party verdict on what an npm package or file does when run. No key, no signup.

Scan code for quantum-vulnerable cryptography and get NIST post-quantum migration guidance.

Hosted, OAuth-gated endpoint for quantakrypto's post-quantum crypto tools: scan code for quantum-vulnerable cryptography (RSA/ECDH/ECDSA/DH) and get NIST ML-KEM/ML-DSA/SLH-DSA migration guidance over authenticated HTTP — nothing to install. Sign-in required (Google/GitHub/email). Same tools as the open-source @quantakrypto/mcp server; source at github.com/quantakrypto/pqc-tools.

Paid AI utility APIs for semantic web comparison, migration safety, code verification, document extraction, security analysis, monitoring, accessibility auditing, and citation research. Accessible through MCP with x402 payments on Base mainnet.

Design system contracts, docs search, and usage validation for @digitaltableteur components.

Check if a dependency's license obligates you, based on how you ship. npm, PyPI, Go.

Reality Graph Verification ToolsA

dev.realitygraph

Read-only AI coding tools for change verification, release readiness, capacity, and guidance.

The OpenZeppelin Cairo Contracts MCP server generates secure smart contracts in the Cairo language for Starknet environments based on OpenZeppelin templates. It brings OpenZeppelin's proven security and style rules directly into AI-driven development workflows to create safe, production-ready contracts. Key capabilities include providing templates for ERC-20, ERC-721, ERC-1155, Multisig, Governor, and Vesting contracts.

Watch dependencies, verify facts, inspect coverage, and catch up on changes with durable cursors.

## Skill Catalog The library contains 42 public skills organized by Rails development concern. | Category | Examples | |----------|----------| | Planning | `create-prd`, `generate-tasks`, `plan-tickets` | | Testing | `plan-tests`, `write-tests`, `test-service`, `triage-bug` | | Code quality | `code-review`, `respond-to-review`, `security-check`, `refactor-code` | | Architecture and DDD | `define-domain-language`, `review-domain-boundaries`, `model-domain`, `review-architecture` | | Rails imple

Reverse-engineer websites with rendered-DOM, animation, WebGL, source-map, and design-system analysis. Requires an Enrichr API key; authenticate with the X-API-Key header.

Alcheon

dev.alcheon.api

Alcheon is an MCP server that gives AI coding agents access to a curated library of 100+ analyzed real-world design systems, letting them recommend reference sites, synthesize design briefs with spacing and color tokens, and generate section-level UI guidance — so AI-built interfaces draw from actual design DNA instead of generic defaults.

Stack intelligence from real production Rails apps. Compare gems, scan a Gemfile. No API key.

Multi-reviewer AI code review: surfaces findings the reviewers agree on, disputes flagged.

Always-on performance engineering for your own code: proven pull requests, the merge stays yours.

Dependency risk + calibrated, publicly scored forecasts on OSS packages. Docs: anteproof.com/docs

Audit GitHub repos for malicious and supply-chain code before you depend on them.

Source code search for every package on PyPI and npm.