MCP Server Directory

caruon io.github.pipeworx-io/carbon

Carbon MCP — UK Carbon Intensity API (free, no auth)

Scan AI agents for tool-calling vulnerabilities: prompt leaks, hijacking, injections, and more.

e2a — email for AI agents io.github.Mnexa-AI/mcp-server

Authenticated email gateway for AI agents — per-agent inboxes, HITL approval, SPF/DKIM verified.

StockMarketScan com.stockmarketscan/mcp-server

18 tools for US stock screeners, chart patterns, options flow signals and equities research.

Zero-Trust PII & secrets sanitizer. Locally scrubs data in-memory before sending context to LLMs.

Cataas io.github.pipeworx-io/cataas

CATAAS MCP — Cat as a Service (free, no auth)

Detect, review and fill PDF form fields - scans included - via justfill.app

Network-egress firewall for agent tools: check URLs against a declarative policy.

Extract a website’s design tokens (colors, type, spacing, shadows) as DESIGN.md, W3C, or CSS.

PoC: Open Registry supply chain — unvetted server listing (security research)

Open-source AI security agent: SAST, DAST, and policy-as-code over MCP.

SureSMS com.suresms/mcp

Send SMS, manage contacts and groups, and read delivery reports. OAuth 2.1 SureSMS login.

Advanced NPM analysis: Recursive security scanning, ecosystem awareness, and deep insights.

Scan and reclaim dormant SOL from your Solana wallet. Powered by UnclaimedSOL.

flights io.github.pipeworx-io/flights

Flights MCP — wraps OpenSky Network API (free, no auth required)

Court Listener io.github.pipeworx-io/court-listener

CourtListener MCP — Free Law Project's CourtListener API (free, no auth required for basic access)

catfacts io.github.pipeworx-io/catfacts

Cat Facts MCP — wraps Cat Facts API (free, no auth)

Bis io.github.pipeworx-io/bis

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

Signal Oracle io.github.NeruoticFarrow/signal-oracle

Pay-per-call change-intelligence feeds for AI agents over x402 (deps, security, regs, tariffs)

The Daily Smark com.thedailysmark/wrestling

Pro-wrestling news, TV schedules, live events, videos and podcasts. Read-only, no auth.

PostgreSQL MCP server with 203 tools, connection pooling, HTTP/SSE, OAuth 2.1, and tool filtering

airquality io.github.pipeworx-io/airquality

Air Quality MCP — wraps air-quality-api.open-meteo.com (free, no auth)

Alienvault Otx io.github.pipeworx-io/alienvault-otx

AlienVault OTX MCP — Open Threat Exchange (free with key)

airports io.github.pipeworx-io/airports

Airports MCP — wraps AirportGap API (free, no auth required)