"Simple HTTP server or client implementation" matching MCP servers:

A read-only Reddit MCP server that fetches threads, comments, and subreddits from the Arctic Shift archive over HTTP, requiring no Reddit account or API key.

Fetches live weather data from Open-Meteo without an API key and returns structured JSON with location disambiguation, enabling weather queries in LM Studio chat.

An MCP service for interacting with Transport NSW's API that enables users to find transport stops around locations and retrieve information about transport alerts and disruptions.

Model Context Protocol server: plug AEMET into Claude Desktop, Cursor, Windsurf or any MCP client. Runs locally over stdio.

MCP server providing one-call access to 100+ curated Australian government datasets across 9 sources, including ABS, RBA, ATO, and more.

A Model Context Protocol implementation that enables LLMs to access real-time, forecasted, and historical U.S. air quality data through the AirNow API.

Enables retrieval of historical stock data from Yahoo Finance through a simple interface, allowing users to fetch data with customizable periods and intervals using any MCP client.

Provides 46 no-authentication A-share (Chinese stock market) data tools covering quotes, financials, capital flows, sectors, announcements, macro data, and more, callable from any MCP client without API keys.

Look up countries, timezones, periodic table elements, physical constants, units, HTTP status codes, and MIME types via MCP. STDIO or Streamable HTTP.

Access the OpenAlex academic research catalog - 270M+ publications through MCP. Supports STDIO and Streamable HTTP.

A remote MCP server that exposes a get_weather tool for real-time current weather queries of any city via the free wttr.in API, supporting Streamable HTTP transport.

MCP server for fetching US Bureau of Labor Statistics data including CPI, unemployment, wages, JOLTS, and more. Provides 7 tools for survey discovery, SeriesID resolution, and data retrieval via STDIO or Streamable HTTP.

Resolve DOIs, search ~155M scholarly works, fetch references, and look up publishers via the Crossref REST API. Supports STDIO and Streamable HTTP transports.

Search Austrian consolidated federal & state law, court decisions, and the authentic Bundesgesetzblatt from the official RIS via MCP, keyless and supporting STDIO or Streamable HTTP.

Geocode places, fetch global weather forecasts, ERA5 historical climate, marine conditions, air quality, and terrain elevation via MCP. Provides 11 tools over STDIO or Streamable HTTP.

Access FEC campaign finance data through MCP. Query data about candidates, money trails, and election filings. STDIO & Streamable HTTP.

Exposes the FBI Crime Data Explorer API — crime estimates, agency offense rates, and LEOKA officer safety data via MCP. Supports STDIO or Streamable HTTP transport.

Query US Treasury national debt, interest rates, exchange rates, and fiscal datasets via MCP with STDIO or Streamable HTTP.

Search artists, releases, recordings, works, and labels; traverse relationships; resolve ISRC/ISWC/barcode; fetch cover art via MCP. STDIO or Streamable HTTP.

Look up Pokémon, moves, abilities, items, natures, and type matchups from PokéAPI v2 via MCP. Supports STDIO or Streamable HTTP.