MCP Server Directory

arifOS — Constitutional AI Kernel io.github.ariffazil/arifos

Constitutional AI kernel with 13 MCP tools, 888_JUDGE verdict pipeline, and VAULT999 ledger.

Jupiter Invoice com.jupiterinvoice/server

Create and manage invoices and customers on Jupiter Invoice (MCP, API-key auth).

CVE checks, supply chain signals, live catalog, and CVE detail for MCP clients (infra, PyPI, npm).

MCP server for Apple Store Connect API integration with OAuth authentication support

Network diagnostics — ping, traceroute, DNS, port scanning, and connectivity testing.

Turns Obsidian vaults into AI-queryable knowledge graphs with 12 tools

Sign AI output for EU AI Act + FRE 902 compliance, verify content authenticity provenance

MCP server for CloudPayments API — charge, auth, confirm, void, refund, find transaction. 6 tools.

Solana DeFi risk intel over x402: rug/honeypot scans, pool analysis, wash-filtered pools.

MCP server for querying VirusTotal API with comprehensive security analysis tools.

md-log MCP: save/update/fetch markdown by path (stdio + remote HTTP, PAT auth).

Ukrainian grammar/surzhyk check + authentic-rendering lookup. Wraps ukr.vitalinguist.com API.

commodity-signal com.airblockfz/commodity-signal

Commodity futures bottom/top signals: 28 futures, verdict + score, scans. Pay-per-call x402.

MCP injection / prompt-poisoning / SSRF scanner. 30+ canonical rules covering the April 2026

MCP Marketplace io.mcp-marketplace/search

Search and install 4,000+ security-scanned MCP servers from inside any MCP-aware AI client.

Security sidecar for MCP servers: 11 read-only control-plane tools for prompt-injection checks.

MCP conformance test harness. JSON-RPC, OAuth 2.1 PKCE, schemas, smoke, annotations. CLI + lib.

MCP for Oura link.smirnov/mcp-oura

Multi-tenant hosted MCP server for Oura Ring — 21 read-only tools, OAuth per user.

stock-signal-us com.airblockfz/stock-signal-us

US stock bottom/top signals: S&P500 + indexes, verdict + score, scans. Pay-per-call x402.

CheckMyVIN net.checkmyvin/checkmyvin

Decode any VIN and check open NHTSA safety recalls. Free official US government data, no auth.

HoneyLabs net.honeylabs/mcp

Honeypot probe data: IP reputation, scanners, CVE probing, TLS and SSH fingerprints.

Read-only SSH server diagnostics via a fixed 38-command whitelist; secrets redacted, no write path.

parkinzi com.parkinzi/parkinzi

Live Saudi smart-parking data: spots, EV chargers, stats, and blog. Read-only, no auth.

Interventional pain medicine MCP: Medicare checklists, CPT/ICD-10, ASRA, prior-auth & appeals