MCP Server Directory

numuersapi io.github.pipeworx-io/numbersapi

NumbersAPI MCP — wraps numbersapi.com (free, no auth)

Oecd io.github.pipeworx-io/oecd

OECD MCP — Organisation for Economic Co-operation and Development data (free, no auth) via the…

Gradus Notation + Harmonic Analyzer + Engraver: music tools for any AI agent. Free, no auth.

FastMCP server for bidirectional sync between personal and team Obsidian vaults.

ARGUS-3 stdio MCP with WARDEN firewall: argus_ask, argus_status, argus_capabilities.

Sports io.github.pipeworx-io/sports

Sports MCP — wraps TheSportsDB API (free tier, test key 3, no auth required)

Sunrisesunset io.github.pipeworx-io/sunrisesunset

Sunrise-Sunset MCP — wraps the sunrisesunset.io API (free, no auth)

Swisstransport io.github.pipeworx-io/swisstransport

Swiss Transport MCP — wraps Transport Open Data API (free, no auth)

Tvmaze io.github.pipeworx-io/tvmaze

TVMaze MCP — TV show metadata, episodes, schedules (no auth)

Apiiro Guardian Agent io.github.apiiro/guardian-agent

Apiiro Application Security Posture Management (ASPM) tools for AI coding assistants.

Free context-engineering audits for AI agents. BYOK Anthropic key. Top-3 findings per scan.

Local encrypted secret broker for AI agents: request keys by name, approve each use over MCP.

AgentAegis io.github.astafford8488/agentaegis

Pay-per-call cybersecurity for AI agents: vuln scans, threat intel, compliance, code security.

Local Windows management, diagnostics, security, cleanup, and optimization MCP server.

Attest io.github.attestagents/attest-mcp

Scan agent payment endpoints (x402, AP2, L402, MPP, 402) for a trust grade A-F before paying.

Security gateway for MCP agents: blocks prompt-injection-driven tool calls before they execute.

CAI MCP server — gives AI agents a custodial wallet, @cai.com email, and vault.

MCP server for Kalshi prediction markets: native RSA-PSS auth, rate limiting, demo/prod safety.

Funding Rate Arbitrage Scanner API io.github.Br0ski777/funding-arb

Cross-venue perp funding rate arb — Hyperliquid, Binance, Bybit, OKX spreads. x402.

Solana Token Launch Scanner API io.github.Br0ski777/solana-launches

New Solana token launches — pump.fun, Raydium, PumpSwap. Price, liquidity, volume. x402.

AI health, token usage, LLM cost optimization, BYOK vault, and cleanup audits for MCP agents.

Scans Base L2 smart contracts for security risks. Risk score 0-100, detects backdoors & proxies.

ContractOracle-Sentinel io.github.Evozim/defi-sentinel

DeFi smart contract forensic auditor and vulnerability scanner.

Legal Validator io.github.Evozim/legal-validator

Regulatory compliance scanner validating SEC, FTC, and anti-spam rules.