"Free and open-source coding assistants" matching MCP servers:

Enables AI agents to call 16 small, deterministic, read-only tools over a free, no-auth remote streamable HTTP MCP endpoint, covering business idea scoring, price headroom, hotel OTA commissions, open-source SaaS swaps, ads policy notice risk, App Store 4.2 prechecks, and Japan trip planning. Each tool is also exposed as a plain JSON API with OpenAPI docs.

This MCP server provides accessibility risk assessment for Seoul subway trips, considering wheelchair, stroller, and other mobility constraints. It offers tools to check station facilities, elevator status, and calculates risk scores for routes based on a deterministic engine.

Check if a flight connection is comfortable, tight or risky, with cited airport data.

Gives language models weather tools for place search, multi-day forecasts, and location comparison, with no API key or configuration required.

An MCP server for Swiss Federal Railways (SBB) open data, enabling AI models to query real-time disruptions, passenger frequencies, station details, and more without an API key.

Lets any MCP-compatible AI agent search live resort inventory, request exact all-in quotes including transfers, and start real hotel bookings that the traveler completes on a hosted Stripe checkout.

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.

MCP server that lets citizens search and book Parks Canada campgrounds, accommodations, day use, and backcountry permits through their own AI assistant, with secure local session handling and payment completed by the user in their own browser.

Enables real-time one-way and round-trip flight searches from any MCP client without an API key or account, returning live fares, historical price insights, and bookable links supported by disclosed sponsored cards.

MCP server providing access to Malaysia's government datasets, dashboards, weather forecasts, and transport data through a unified search system and hybrid data access architecture.

Enables LLMs to geocode and reverse geocode places, find nearby points of interest, search categories within an area, get turn-by-turn routing, suggest meeting points, and analyze neighborhoods, commutes, schools, EV charging, and parking through OpenStreetMap data services. It also serves place and map tile resources over stdio, SSE, or Streamable HTTP transports.

Enables AI clients to query University of Maryland data and services, including course catalogs, grade distributions, sections and instructors, dining menus, Shuttle-UM routes, athletics, campus events, and the campus directory. Supports signing in with a UMD Directory ID so students can access personalized Schedule of Classes, Testudo, and ELMS information.

Provides access to 250,000+ Canadian government datasets and specialized querying of transportation infrastructure including bridges, airports, cycling networks, transit systems, railways, and tunnels across multiple provinces.

The world railway atlas as read-only MCP tools: search 744+ legendary train routes (high-speed, classic, night, scenic) and get per-route facts, rankings and journey times. Runs from the repo's open dataset (CC BY 4.0); a free hosted endpoint is also live at https://trainrouter.com/mcp.

Stockholm public transport (SL) for AI assistants: live departures with platforms and delays, trip planning to stops or street addresses with exits, crowding and walks, and disruptions. No API key. Also hosted at https://sl-mcp.miltonlindblad.workers.dev/mcp

Google Hotels MCP server via direct RPC — no scraping, no browser automation. Three tools: hotel list search (16 filter slots: stars, price, amenities, brands, free cancellation), per-OTA rate plans and cancellation policies for a single hotel, and parallel top-N enrichment. One-command setup for Claude Code, Codex, and ChatGPT

Enables querying Swedish Transport Administration open data for live train departures and arrivals, railway disruptions, road incidents, and measured road weather through MCP tools.

Free, no-login MCP server for searching and comparing flights with real-time pricing from multiple airlines and booking platforms worldwide.

Enables AI assistants to plan container and truck loads from plain-English shipment descriptions, returning fitted containers, utilization, non-fitting items, and interactive 3D load plans.

Enables AI assistants to search hotel rooms by number of nights within a flexible date range, returning real prices and the cheapest deals with booking links. It also supports city resolution, hotel listing, and offer details for external booking completion.

An MCP server that enables AI assistants to interact with the Netherlands Railways (NS) API for route planning, pricing, and real-time departure information. It provides tools for searching stations, planning trips with connections, and viewing real-time departure boards.

Connects AI assistants to Swiss Federal Railways (SBB/CFF/FFS) data: train schedules, station search, ticket prices, and direct ticket purchase links.

Provides AI assistants with access to real-time flight data, airport schedules, delays, and aviation reference databases through natural language queries.

Enables AI assistants to access Google Maps services including places search, details, directions, geocoding, and nearby search through natural language.

Enables AI assistants to access Swiss public transport data including journey planning, real-time departures, disruptions, occupancy forecasts, ticket prices, and train formations via a standardized MCP interface.

Real-time last-minute tour and activity booking across 18 suppliers in 15 countries via the OCTO open standard. Search available slots, create Stripe checkout sessions, and check booking status.

Enables AI assistants to query live arrivals, vehicle positions, routes, stops, and timetables across the Athens public transport network, with stop lookups by name or coordinate in Greek or Latin script. Results cover OASA buses, trolleys, metro, and tram, falling back to cached reference data when the upstream API is unreachable.

Enables AI assistants to connect to the AwardMath travel points optimizer, turning wallet balances and travel goals into up to three verified, explainable award-booking plans with exact transfer steps, required points, and fees.

Provides real-time Seoul city data including population congestion, traffic, parking, transit, bikes, EV chargers, weather, events, commercial, accidents, alerts, and news across 121 locations using Seoul Open Data API.

Enables AI assistants to access South Korean tourism information via the official Korea Tourism Organization API, providing comprehensive search for attractions, events, food, and accommodations with multilingual support.