"Open-source API development tools for Linux with Markdown support" matching MCP servers:

A generic Markdown vault MCP server with FTS5 full-text search, semantic vector search, frontmatter-aware indexing, incremental reindexing, and non-markdown attachment support that exposes search, read, write, and edit tools.

An open engine that gives AI persistent, reusable UI components with a writable component registry, versioned data storage, and a shell runtime, enabling AI to create, save, and reuse single-purpose apps.

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

Open Ephemeris is a high-precision astrology API with an MCP server exposing 116+ endpoints across natal charts, transits, synastry, Human Design, BaZi, solar returns, and much more.

MCP server that gives AI agents isolated, named Linux computers with stable IDs and lifecycle control. Supports multiple backends like Docker, Fly Machines, Modal, and E2B, with a dashboard for managing sandboxes.

The best free social media publishing and scheduling API. Publish to 11 platforms from a single API call. Schedule posts, upload media, track analytics, and automate your social media workflow.

Exposes structured documentation for 200+ Trimble Connect API endpoints and provides tools for AI-assisted development of Trimble Connect extensions and applications.

Provides real-time weather temperature queries for any city with an interactive UI form, using Open-Meteo API (no API key needed).

A single MCP server that transparently routes user requests to 83 open-data sources with built-in discovery and autonomous plugin creation.

Enables AI-driven MIDI composition with chord name support, interactive piano-roll preview, and multiple deployment modes.

Open Claude integration for Ametller Origen's live catalog, online orders, real cart, and optional offline Gmail tickets.

Enables interaction with the SuperOps.ai PSA/RMM platform via its GraphQL API, providing tools for managing clients, tickets, assets, technicians, and custom queries.

Security-hardened MCP server for Excalidraw with API key auth, rate limiting, real-time WebSocket sync, and 14 diagramming tools

Open-source MCP server that lets AI agents control 3D printers. 353 tools for OctoPrint, Moonraker, Bambu Lab, Prusa Link, and Elegoo — search model marketplaces, generate 3D models from text, slice STL files, queue prints, monitor with camera vision, and manage multi-printer fleets. Install via pip install kiln3d.

A batteries-included Python template that ships a shared service registry as a CLI, MCP server, and HTTP API, enabling rapid development of MCP tools like the included Gmail skill.

MCP server that resolves postal/ZIP codes to place names, states, and coordinates using Zippopotam.us. Free, no API key required.

Enables real-time domain registration lookups via RDAP, including availability, expiration, and registrar details, with no API key required. Supports natural language queries like 'is example.com available?' or 'when does example.com expire?'.

Provides live product search, offer comparison, and price history retrieval from BestPrice.gr through three read-only tools, enabling AI applications to query shopping data without an API key.

Search vacation rental properties, check real-time availability, get canonical pricing quotes, and create direct bookings. Each property is its own node with live data. Supports staircase pricing, seasonal rates, and 11 languages.

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?'.