"Free APIs and services without commercial fees" matching MCP servers:

Public APIs Discovery for Humans & Agents

An MCP server that gives AI coding agents real-time access to the public-apis dataset, enabling search, live probing, and code snippet generation for 1,500+ free public APIs.

Enables checking whether a given US patent is still in force or has lapsed, by returning every recorded USPTO fee event, a computed status, and 4th/8th/12th-year fee-window details. Also supports counting and sampling fee events such as expirations for non-payment across a date range or patent-number prefix.

MCP server providing official US economic data including CPI inflation, famous prices, national debt, and Treasury interest rates. Enables AI agents to query historical and latest economic statistics via natural language.

Enables Claude to discover and invoke Brazilian government APIs (public, Serpro, and Conecta gov.br) through a catalog-driven gateway that searches a YAML catalog of 116 APIs, loads OpenAPI specs on demand, and calls endpoints with credentials resolved per entry. It provides five generic tools for search, listing, describing, calling, and checking credential readiness, keeping client context small instead of exposing one tool per endpoint.

Enables access to 11 free public APIs including weather, country info, NASA data, dictionary, and more, with zero configuration and no API keys required.

Enables querying eight keyless French and international public APIs for addresses, communes, holidays, school calendars, BODACC announcements, European VAT, and exchange rates through read-only MCP tools.

MCP server exposing all major Swiss official public APIs as native tools for any MCP-compatible AI agent.

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 querying live Sonoma County animal shelter intake and outcome records, including recent intakes, animal lookup by id/name/breed, and outcome summaries.

Enables AI agents to search and retrieve Israel's social services data, including service details, taxonomy, and location-based queries.

Provides MCP tools to query live Austin Animal Center intake and outcome records, including recent intakes, animal lookup by ID/name/breed, and outcome summaries by type, animal type, or month.

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 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.

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.

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 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.

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.

Gives AI agents a daily-refreshed index of 350k+ open jobs scraped from 12,000+ company career sites on Greenhouse, Lever, Ashby, SmartRecruiters, Recruitee and Personio. Enables keyword, country, remote, seniority and recency job searches, discovery of roles opened since yesterday, and weekly company hiring-signal rankings, with per-call cost caps.

Enables users to discover matching public procurement notices from four official portals, with filters by keywords, CPV prefixes, and buyer country. Returns structured notice rows including buyer, deadline, value, codes, and link.

One-call Australian health and welfare data plumbing via AIHW — cited responses for practical analysis, not a data broker.

Enables querying of Hong Kong government data on elderly community care services, such as waiting times and applicant counts.

MCP server for answering questions about official statistics from a single publication URL, with tools to check query scope, retrieve overview, text, data files, and search.

Enables AI assistants to ask what aircraft are flying near a location, track a specific flight's live position, route, aircraft details and photo, and surface emergency-squawking or military aircraft. It exposes four tools (flights_near, track_flight, emergencies, military_aircraft) backed by merged volunteer ADS-B networks and a global snapshot.

Enables discovery and querying of UK public data for infrastructure, geology, and preliminary ground investigations, including boreholes, environmental monitoring, planning, mapping, and traffic, plus cited desk studies and ground-investigation gap planning.

Query normalized U.S. House and Senate STOCK Act disclosures, member trading histories, and aggregate trading statistics through MCP.

Lets LLMs rank, compare, and connect actors and movies from local IMDb non-commercial datasets stored in DuckDB, with Wikidata enrichment.

Enables currency conversion and exchange rate lookups using real ECB reference rates, free and without an API key. Supports natural language queries like 'convert 100 USD to EUR' or 'what's the exchange rate between GBP and JPY?'.