"Signal" matching MCP servers:

Enables encrypted messaging via Signal, SimpleX, and Session through a unified API, supporting message sending, polling, and key management.

MCP server for Signal Sciences (Fastly NGWAF) API, providing progressive disclosure and 40+ read-only tools for managing corporations and sites.

An MCP server that provides tools to audit AI-agent marketplace integrity by scanning listings for deceptive patterns like fabricated engagement, automated seeding, self-advertisement, unpaid work risk, and high-budget bait.

Provides MCP tools to query the phishunt.io phishing feed, enabling domain checks, brand-specific phishing lists, delta syncs, and phishing-signal analysis.

Enables AI agents to verify email addresses through a multi-signal probabilistic pipeline, returning confidence scores and honest statuses (safe/risky/invalid/unknown) with evidence.

Enables domain overviews for security and sales, providing registration, infrastructure, and risk signal data through a simple API request.