"An online encyclopedia for information and knowledge" matching MCP connectors:

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.

Drupal core change records, core symbol lifecycle, and contrib upgrade readiness.

Check exact npm/PyPI upgrades for evidence-backed breaking changes; query APIs and components.

Hosted MCP server for structured code review passes on human- and AI-written code. Free tier.

Format/lint JS, Python, HubL for automation platforms. Tools: format_code, format_json, ask_codefmt

A skeptical senior-engineer code reviewer over MCP: risk-scans unified diffs, flags AI-generated-code tells, reports complexity hotspots, scans for leaked secrets, and runs an OWASP security pass — real analyzers, no external APIs. Free tier, no signup.

A fully free linter for agent skill files: lint_skill validates YAML frontmatter, structure, size budgets, and safety phrasing with a pass/fail verdict; packaging_check validates zip layout against marketplace rules; plus regex_test, json_validate, diff_texts, and cron_explain for skill authors. No license or account required.

Compile code with thousands of compilers, inspect the assembly, and share godbolt.org links

The official Svelte MCP server providing docs and autofixing tools for Svelte development

Security + bug + perf + refactor audit for Python. Returns 0-10 score + MD report.

Statically audits MCP tool surfaces for token cost, schema quality, and design issues.

JSON/YAML, regex, diff, JWT, SQL dialects — the keyless millisecond ops an agent needs mid-task.

CVE lookups (NVD) and dependency-manifest audits (OSV) for AI agents. No API keys.

What CSS you can actually ship today, from live Baseline data and MDN browser-compat-data.

Honest library picks for coding agents in 25-360 tokens. Tells your agent what NOT to install.

Score the privilege a Chrome MV3 extension takes from its manifest, and diff permission sets.

Ground-truth code graph for your codebase: exact callers, callees, symbols & dependencies.

Repository evidence for agents before they adopt dependencies, enter codebases, compare, or merge.

Packagephobia MCP — install-size analysis for npm packages