"How to obtain an API key" matching MCP servers:

Enables listing, reading, and searching daily AI news from AI Daily Insights with structured tools and no API key required.

Enables sentiment analysis of text blocks using the Api Ninjas API, returning sentiment scores and overall sentiment classification for up to 2000 characters of text.

an api wrapper for the us government info api

An offline MCP server that enables research tasks such as summarizing text, extracting key points, and saving/retrieving notes via a CLI client and stdio transport.

Enables fetching Google's AI Overview answers and cited sources as structured JSON, with support for batch queries and country/language targeting.

CNN's Fear & Greed index for the US stock market: current score and rating, the seven component indicators, and about a year of daily history. Go standard library only, no API key required.

Enables researching YouTube channels and videos by listing uploads, reading transcripts, extracting frames, and searching, without needing a YouTube API key.

Deterministic US equity-compensation tax optimizer. Six tools cover ISO/AMT exercise scheduling, NSO sell-vs-hold, RSU vest-and-sell, single-stock concentration, protective put / zero-cost collar pricing, and Section 1202 QSBS qualification. Federal plus 50-state plus DC tax math.

Query verified pricing, aggregated user ratings, feature comparisons, and category rankings for 508+ SaaS, AI, and security tools across 45 categories. No API key required - install with npx @comparedge/mcp-server

Startup engineering acceleration signals for VC investors. Tracks commit velocity, contributor growth, and repo expansion across 20 sectors via public GitHub data. No API key required.

An MCP server that enables AI agents to query RevenueCat's subscription analytics API using natural language, retrieving metrics like MRR, churn, and revenue.

Enables users to query news mention volume time series, growth percentages, and live Google News feeds as an MCP tool, integrating with AI hosts like Claude and Cursor.

MCP server for key driver and feature importance analysis based on rule mining

An MCP server that searches across the Internet Archive and Library of Congress at once, merging results while keeping each archive's differences. Provides tools to search inside texts, search catalogues, and retrieve item records, all read-only and without an API key.

An MCP server for the U.S. Census Bureau's International Trade Data API, enabling queries of monthly export and import statistics by HS, NAICS, end-use, and other classifications, with tools for trade balance, top partners, and country code lookup.

Real human judgment as agent tools -- an AI agent can ask a question and get back a structured, schema-validated JSON answer from a real quality-scored human. 16 response types (yes/no, ratings, rankings, A/B tests, sentiment, image/video/audio review, voice/video/photo capture). Fully programmatic signup with a $5 free trial credit, no card required.

MCP server for UNICEF child development statistics. Query 790+ child-focused indicators across 200+ countries with disaggregations by sex, age, wealth quintile, and residence. No API key required.

Enables AI to query Reddit discussion volume trends, growth rates, and top topics for any keyword without hitting Reddit API limits.

Enables AI clients to analyze any company domain and determine its AI maturity tier (commercialized, deployed, declared, or none) with supporting evidence, via a single tool backed by an Apify actor.

Enables an LLM to search and research Goodreads books, ratings, and reviews using public data, without login or writes.