SFXMint

SFXMint MCP Server

Free CC0 sound effects for AI agents. Search 4,600+ sounds, get permanent hotlinkable MP3/WAV URLs, and generate new SFX from text — no API key, no signup.

• Endpoint (Streamable HTTP): https://sfxmint.com/mcp
• Docs: https://sfxmint.com/api/docs
• Registry: published as com.sfxmint/sounds on the official MCP Registry
• License of all audio: CC0 1.0 — public domain, commercial use welcome, no attribution required

Every sound is AI-generated (Stable Audio) or procedurally synthesized, so the library is copyright-clean by construction. Audio URLs are permanent, immutable, CORS-enabled and free to hotlink — safe to embed directly in generated apps, games and videos.

Quick start

Claude Code:

claude mcp add --transport http sfxmint https://sfxmint.com/mcp

Cursor / generic mcpServers config:

{ "mcpServers": { "sfxmint": { "url": "https://sfxmint.com/mcp" } } }

Prefer a skill over a server? This repo also ships an Agent Skill that uses the plain HTTP API — no MCP server required:

npx skills add flreey/sfxmint-mcp -y

It teaches the agent to ask by purpose (role → set → search) instead of guessing keywords, and carries ready-to-paste React / Phaser / plain-HTML snippets. Source: skills/sfxmint/SKILL.md.

Tools

Tool	What it does
get_role_sound	Start here. Ask by event — button-click, purchase-success, error, coin, rain-loop. Returns one QA-checked default plus alternates; plain-English aliases work
get_sound_set	A coherent kit for one product in one call (15 sets: ui-crisp, retro-game, checkout, platformer, ai-coding-tool, …)
search_sounds	Free-text search over 4,600+ sounds; never returns empty (semantic fallback)
get_sound	Full metadata for one sound (incl. generation prompt, measured acoustics, license)
generate_sound	Text-to-SFX (output 1–12 s, takes 10–60 s to render); returns permanent URLs. Rate-limited 3/day per client
get_job	Status of a generation job

Example

"Find me a rain ambience loop" → search_sounds(query: "rain ambience") → https://sfxmint.com/dl/ambience-rain-01.mp3 (CC0, hotlink-safe, 11 s)

Rate limits & fair use

• Search/metadata: no auth, generous limits
• Generation: 3/day per IP on the MCP path (browser path: 5/day)
• Hotlinking is allowed and encouraged; files are served with long-lived immutable caching

Contact

hello@sfxmint.com · https://sfxmint.com