"Web search services that don't require an API key" 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.

Provides deterministic, read-only design knowledge for AI coding agents to help them choose visual directions, plan UI states, and compose design tokens, all without network access.

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.

A Python MCP server that allows your agent to outsource HTML generation and rendering, storing artifacts in memory and supporting both full HTML and resource URIs.

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.

Enables AI assistants to search and download SVG icons from iconfont.cn, with support for style filtering and automatic login.

Enables agent-driven CAD design through deterministic source files (.kcad.ts), including model evaluation, validation, and export to STEP/STL via MCP tools for review and introspection.

An MCP server that enables AI agents to semantically retrieve premium UI components from Awwwards and adapt them into clean React + Tailwind code.

Search 161,000+ free hand-drawn Infyicon icons in four matching styles and fetch ready-to-embed SVG markup or PNG URLs, plus CSS class lookup for the 61,000-glyph Infyicon UI webfont. Free with attribution, no API key required.

MCP server for Uiverse.io that lets AI agents browse, search, and fetch open-source UI components (HTML + CSS) directly in their editor. No API key required, it indexes 3,800+ components locally.

An MCP server that enables AI assistants to search royalty-free stock photos using natural language, example images, or similarity, and render results as an inline thumbnail grid.

Educational MCP server that connects AI agents to the Canva Connect API, enabling design search, creation, and export through natural language.

Provides read-only access to over 100 UX/UI design checklists from Checklist.design, enabling users to search and retrieve design guidance for specific flows and screens. Runs locally without an API key.

An MCP server that parses CAD files (.dwg, .dxf, .dwf, etc.) via the Cadlens API, enabling LLM clients to extract and reason over entity, layer, and metadata payloads.

MCP server that helps AI agents create UIs that don't look AI-generated by auditing components, refining copy, suggesting themes, and checking accessibility/contrast.

An MCP server that lets AI agents drive FigJam boards through a local Figma plugin, bypassing API rate limits with 19 tools for reading, writing, and editing FigJam content.