"Free tools or resources that do not require an API" matching MCP servers:

An MCP server that provides real-time weather data, hourly forecasts, and daily summaries using the free Open-Meteo API with no API key required. It enables users to search for weather conditions by specific coordinates or city names across multiple measurement units.

Enables natural-language spatial analysis of transmission lines and wildlife/public access lands using Claude, MCP, and DuckDB. Users can ask questions about intersections, distances, buffers, and other GIS operations without writing SQL.

Enables MCP-compatible clients to list verified free HTTP, SOCKS4, and SOCKS5 proxies, pick top-ranked ones, and summarize the current proxy snapshot through three read-only tools, without forwarding traffic or accepting arbitrary URLs.

Enables anonymous, read-only lookup of IP representatives, their profiles, market snapshots, and coverage statistics drawn from a completed static IPRATE data release. Queries are rate limited and served from immutable, checksum-verified release snapshots, so no database or live export tree is ever queried.

A Model Context Protocol server that provides semantic search and intelligent access to a comprehensive list of free services and tools for developers.

Verified AI free-tier limits, quota comparisons, commercial-use verdicts and zero-cost workflows. Every entry carries a human-checked verification date and is re-checked by a daily link patrol.

Enables access to Zillow real estate data through the Zillow Working API, allowing users to query property information and listings.

Gives Claude direct access to the Africa API for comprehensive data on all 54 African nations, including economic indicators, markets, trade, government, elections, and policies.

Defeatbeta API is an open-source alternative to Yahoo Finance's market data APIs, designed to provide reliable and high-performance financial data.

An MCP server that enables AI assistants to call weather tools, read resources, and use prompt templates for live weather data integration.

MCP server that provides tools to query Korean financial products (savings, deposits, pensions, mortgages, loans) via the FSS Open API, enabling search by company or product type.

Enables searching and retrieving German public procurement notices as normalized JSON, with per-call payment via x402 (USDC on Base) and free sample and stats tools.

Enables keyless, read-only access to a wide range of public APIs (including weather, elevation, Japanese addresses, environment, science, and civic data) through MCP clients, with usage limits and abuse protection built in.

Enables AI assistants to look up, filter, and shortlist 221 curated AI tools by industry, department, pricing tier, or free-tier availability over remote Streamable HTTP without authentication.

Provides a read-only API over a book catalogue, offering tools to search books, retrieve book details and series, and inspect provenance and source agreement data.

Gateway connector between LLM agents and world data, providing access to financial market prices, macroeconomic indicators, and news through a bundled endpoint catalog.

Provides AI agents with Korean national fiscal data (budgets, settlements, and fiscal programs) from multiple government APIs through 7 tools, enabling natural language queries.

Enables access to current inflation data including monthly and annual inflation percentages using CPI (Consumer Price Index) or HICP (Harmonized Index of Consumer Prices) indicators through the API Ninjas Inflation API.

Enables trademark clearance and research across EU and Benelux registers, plus company, group-structure, and EU VAT lookups, all through free public sources without API keys.

High-value scientific tools for AI agents — literature search (PubMed, arXiv, Semantic Scholar), chemical compound lookup (PubChem, ChEMBL), patent prior art search (USPTO, EPO), GPU spot prices across 4 providers, and real-time earth science data (USGS, NASA, OpenAQ). Per-call billing via API key. Keys issued instantly at https://mcp-site.com/keys/request