MCP Server Directory

MCP server for Etherscan — Ethereum blockchain explorer API for AI assistants

ArXiv io.github.guptaprakhariitr/arxiv-mcp

ArXiv preprint search, daily category digest, and author-collaborator graph.

Utility Matrix io.github.helphub369/utility-matrix

Free browser-based calculators and analyzers for cloud cost, DevOps, security, and data governance.

Register/verify your domains, queue security scans, and read findings (CVE, severity).

Security audit for AI agents — scan code/diffs for leaked secrets, check deps via OSV.

patch-tuesday io.github.jonnybottles/patch-tuesday

Query Microsoft Patch Tuesday security updates (MSRC) with EPSS and CISA KEV enrichment

hush com.royashbrook/hush

A secret store for AI agents: the agent never sees the plaintext.

Semantic search and AI context for your Obsidian vault. Surface patterns with catalysts.

IP geolocation, security, ASN, abuse, time zones, astronomy, and user-agent parsing over stdio.

Server security audit (413 checks), hardening, and fleet management across 4 cloud providers.

Security-first web access for Claude. Sanitizes pages, blocks injection, redacts PII.

An MCP server that provides access to FedRAMP 20x security requirements and controls.

Secret and credential management MCP — securely store, retrieve, manage API keys and tokens

Docu-Scan MCP com.spocont/docu-scan

PDF and document extraction via Google Document AI. Free trial available.

Local-first supply-chain security gate for npm/pnpm/bun: typosquat, release age, provenance checks

OAuth 2.0 for AI agents — scoped delegation tokens, audit trails, and revocation.

nexus-mcp io.github.nexus-api-lab/nexus-mcp

Japanese LLM security — prompt injection detection (jpi-guard) + PII masking (PII Guard). Free.

Encrypt/decrypt Ethereum keystore JSON V3 with scrypt/PBKDF2 for secure cold storage

agentlock io.github.Olum289/agentlock

Security gateway for AI agents: policy, approval, and audited execution, no secrets shared.

TomeVault io.github.olijboyd/tomevault

Check AI instruction files, look up a company's record, and keep a dated record of your own.

PageLens AI io.github.PageLens-AI/pagelensai-mcp-server

AI website audit: security, SEO, performance, UX and accessibility checks with actionable fixes.

An MCP server that provides tools to author OSCAL security compliance documentation

Authority-weighted memory graph for AI agents with conflict detection and semantic search.

Bis io.github.pipeworx-io/bis

BIS MCP — Bank for International Settlements statistics (no auth)