"Capture The Flag (CTF) cybersecurity competitions and challenges" matching MCP servers:

Enables BM25 lexical search over a user-provided corpus of CTF writeups or technical documents through an MCP tool, returning relevant results with optional category and solved filters. It can run locally over stdio or as a centralized HTTP service shared by multiple MCP clients.

Enables querying Latvian cybersecurity data, including regulations, guidelines, and advisories from CERT.lv, directly from any MCP-compatible client.

Enables querying Polish cybersecurity regulations, advisories, and frameworks from NASK/CERT Polska via Claude or any MCP-compatible client.

MCP server that enables semantic search over macroeconomic data using the Lambda Capture API.

Enables AI coding agents to discover whether anyone has shared a solution to a Coding Challenge and in which language, listing challenges and filtering solutions by language.

Enables vulnerability analysis by querying CVE data through the CIRCL API and provides professional security risk assessments for SOC and Blue Team operations. It integrates tools for searching vulnerabilities with resources like risk matrices and operational playbooks to help remediate security threats.

Integrates SAM.gov, USASpending.gov, and Tango APIs to enable natural language queries for federal procurement and spending data, providing both human-readable and structured JSON outputs.

Skill librarian for coding agents: describe a task and get the few matching skills from a large local skill collection, then report whether they worked. Runs locally with Ollama and SQLite.

Enables AI clients to search curated, cited knowledge bases built from founders', CEOs', and investors' public talks, essays, and posts, returning passages with source links and dates. It also exposes available source collections via MCP tools so users can ask how those individuals might approach business, product, or growth questions.

The Wyze blog: guaranteed rent, temporary accommodation and lettings guides for UK letting agents.

Enables searching and retrieving articles, sections, and tags from The Guardian via the Guardian Open Platform API.

Enables querying Rick and Morty characters, locations, and episodes using the Rick and Morty API with no authentication required.

Enables searching Bluesky, Substack, and Hacker News content via structured APIs with optional x402 micropayments or API key authentication.

Read-only MCP server that proxies The Game Pensieve API over Streamable HTTP, letting AI assistants query a personal game collection via tools like search, filters, and summaries. Supports OAuth 2.1 enforcement and owner-scoped access.

Provides programmatic access to CTFtime.org data for retrieving information about CTF competitions, team rankings, and event results. It enables users to search for upcoming events, analyze team performance, and access historical competition data through a standardized interface.

Search the fastest-growing US horse boarding directory: 6,000 facilities and 3,800 trainers across 48 states, plus boarding price data by state.

Enables AI agents to search and modify a personal knowledge base through OAuth-secured MCP tools, covering Obsidian vaults and Google Drive mirrors with semantic search, note read/write operations, audit logging, and eval-gated local classification.

Enables AI assistants to search checked US roofing, siding, and gutter contractors by city and trade, and to retrieve individual contractor profiles with contact details, claimed status, and ratings. Read-only, requires no login or API key, and filters out closed or unlisted businesses.

Enables AI agents to search and retrieve UK company data, including company details by Companies House number, group ownership structures, website associations, and Real-Time Industrial Classification definitions.

Enables a child to search a self-hosted picture-book shelf by creatures, themes, places, or colors, read one page at a time through Alexa+, repeat a page on "Again!", and bookmark or resume a reading across sessions.

An MCP Server that provides a conversational interface to the UK Open Banking account information API, allowing agents to interact with bank account data through natural language commands.

Enables AI assistants to query CTF (Capture The Flag) cybersecurity competition data from CTFtime.org, including events, team rankings, results, and votes through the public CTFtime API.

Provides LLMs with network intelligence capabilities including PTR record lookups, ASN analysis, traceroute enrichment, and real-time network monitoring through The Aleph API.

Enables AI agents to search and inspect installed tools and packages across many package managers through a read-only indexed catalog, with optional real-time web research enrichment.

Provides instant access to authoritative security documentation from organizations like OWASP, NIST, and major cloud providers through natural language semantic search. It enables users to retrieve security best practices, frameworks, and vulnerability information directly from a locally cached knowledge base.

Enables AI assistants to access real-time web data through search, markdown scraping, and browser automation while bypassing anti-bot protections. It provides tools for web research, e-commerce monitoring, and data extraction from across the globe.

Free local MCP servers for a business's Google visibility: index checks, Search Console insights, website audits and live Google results, plus a resume kit tailored to one job posting. Stdlib Python.

Provides access to the Reuters Business and Financial News API to retrieve articles, trending news, and market data. It enables searching and filtering financial content by date, author, category, and keywords.

Enables MCP clients to search and retrieve product management articles, talks, podcasts, related content, live events, and job listings from Mind the Product through read-only tools and resources.

Enables clients to query local cybersecurity evidence, retrieving source-backed passages, exact entities, documents, documented relationships, and database status from ATT&CK, OWASP, Sigma, CVE, KEV, and NVD data with citations and immutable snapshots.