---
title: Icons for AI agents — free SVG icon API, MCP server & llms.txt
description: Free SVG icon API for AI agents. No API key. MCP icon server, llms.txt, semantic search. 10,000+ open-source icons.
canonical: https://icons-for-agents.site/for-ai-agents
---

# Icons for AI agents

IconServe is the icon library for agentic development — a free, open-source SVG icon API your AI agents can search and embed. 10,000+ icons at predictable URLs — no API key, an MCP icon server, and an llms.txt so models like ChatGPT, Claude, Gemini and Grok can use it directly.

## Three ways an AI agent can get an icon

### 1. Predictable URL (no API key)

    https://icons-for-agents.site/i/home.svg
    https://icons-for-agents.site/i/heart.svg?color=%23e11d48&size=48
    https://icons-for-agents.site/i/bell.svg?format=png&size=128

### 2. JSON API with natural-language search

    GET https://icons-for-agents.site/api/search?q=notification%20bell&limit=3

### 3. MCP icon server

Remote Model Context Protocol server over streamable HTTP, exposing search_icons, get_icon, and list_sets:

    claude mcp add --transport http iconserve https://icons-for-agents.site/mcp

## Why it's built for agents

- No API key, no sign-up.
- Predictable, guessable URLs (`/i/{name}.svg`).
- llms.txt + OpenAPI: the whole API in one machine-readable file.
- Semantic search: find icons by meaning, not exact keywords.
- Open-source & free: Lucide, Heroicons, Tabler, Simple Icons.