"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.

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

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.

A FastMCP server that exposes hospitality data — accommodations, events, and gastronomy — through a unified MCP interface, supporting multiple worlds for real or fictional data.

Cited Australian stats via the ausdata.io gateway — stable AU.* series IDs, source_url + retrieved_at on every response. Free tier. Not a data broker; upgrade for Embed / signed / webhooks.

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.

Enables querying FDIC-insured institutions, their Call Report financials, peer comparisons, failure records, and deposit market share via MCP, over 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.

Enables searching 13M+ GeoNames places by name, country, feature class, or bounding box, retrieving full place records, walking administrative hierarchies up and down, reverse geocoding coordinates, finding postal codes, and looking up country facts and reference data. Runs over STDIO or Streamable HTTP with caching, per-account rate limiting, and typed failure reasons.

Enables querying UNHCR refugee, IDP, stateless populations, asylum decisions, returns, and resettlement statistics via MCP, including staging large datasets for SQL queries. Supports stdio or Streamable HTTP transports.

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.

Enables identifying integer sequences from observed terms, searching the On-Line Encyclopedia of Integer Sequences with its native query syntax, and reading entry formulas, programs, comments, b-file terms, and cross-references. Runs over STDIO or Streamable HTTP with no API key, returning linked, provenance-bearing results.

Enables agents to look up IANA protocol parameters—ports, media types, HTTP status codes and fields, URI schemes, enterprise numbers, and BCP 47 language tags—and check RFC and Internet-Draft status, while searching and reading any registry in the IANA protocol index. Runs over STDIO or Streamable HTTP with cached, keyless reads of IANA and RFC Editor sources.