"MCP servers that work without API keys" matching MCP servers:

An MCP server that provides headless, read/write access to Photopea for image editing, including layers, text, filters, and document operations, enabling agents to edit images programmatically.

Every other colour API tells you what goes together. Colour Memory tells you what it means, where the evidence ends, and what it must not claim. 47,515 hand-researched records, graded A–E, every result cited. 91 specialist tools built for agents that need precision, not guesses. Direct MCP: https://api.colourmemory.com/mcp — no signup, no key for the free tools (10 calls).

Enables MCP/AI clients to read project state and execute protected PCB operations in EasyEDA Pro via a local Bridge and official extension APIs.

Controls a running KiCad 9+ instance via the official IPC API, enabling board edits, queries, and exports without reload.

A comprehensive Model Context Protocol (MCP) server for interacting with Canva's API. It enables managing designs, brands, assets, and users through natural language.

Generates harmonious color palettes from any hex color with multiple schemes, returning hex, RGB, HSL, and CSS vars. Pay-per-call via x402 micropayments.

Enables AI assistants to generate styled QR codes with customizable colors, styles, gradients, and frames, as well as typed QR codes for WiFi, vCard, etc., using the QRMint API without requiring an API key.

AI design fidelity — compare Figma designs or screenshots against the rendered implementation and get structured discrepancies. Uses your Claude Code or Codex subscription, no API keys.

Exposes the Tier Maker List browser editing workflows, local processing boundaries, FAQ, and official links to MCP-compatible AI clients like Claude Desktop and Cursor. Read-only, no API keys, ~50 ms cold start.

Enables AI coding agents to read and edit the file currently open in Figma Desktop through a local development plugin, supporting node inspection, JSON/image exports, and arbitrary Plugin API scripts without REST API rate limits.

Lets Claude drive the Affinity design app on macOS like a person would, taking screenshots and then clicking, dragging, typing, pressing shortcuts, and choosing menu items. Works with any Affinity version or studio without API keys or plugins.

Enables MCP clients to control EasyEDA Pro for schematic and PCB design through natural language, bridging the EasyEDA API without external AI or API keys.

Enables AI agents to manage BranderUX projects, including brand settings, custom elements, screens, and API keys, with access to verified SDK documentation.

Enables MCP clients to work on Mirva boards and canvases with the user's own account, including drawing, painting, arranging, capturing, and interacting with the agent through the same API the web app uses.

Local, free MCP server for brand logo search and shadcn/ui component search & source lookup, requiring no API keys or login.

A local stdio server that lets AI agents search 59 bundled scientific illustration assets, create and edit figure projects through validated, revision-checked operation batches, and export editable SVG, draw.io, or .biocanvas files with attribution. It runs without API keys or remote listeners and confines its writes to named projects inside a configured workspace directory.

Bridges AI clients to Figma Desktop via Plugin API and WebSocket, enabling real-time design manipulation without rate limits.

Enables coding agents to ground UI work in real product screens by retrieving real screen references, fonts and icons, and recorded design systems, while also serving bundled design-workflow resources, playbook prompts, and connection diagnostics without a token.

A local MCP server that lets coding agents turn conversational prompts into deterministic, re-runnable recipes for 3D objects, walkable worlds, and playable games, all stored on your own disk without API keys or cloud rendering. Those recipes can be edited in place and exported to the browser, Godot, Unity, Unreal, Blender, glTF/OpenUSD, or print-ready STL and 3MF at true scale.

Local-first MCP bridge for live Figma documents, enabling design inspection, editing, asset export, component authoring, and variable management through a plugin and WebSocket server without consuming Figma REST API requests.