# com.sfxmint/sounds (remote · sfxmint.com)

Free CC0 sound effects for agents: ask by role (button-click, coin), sets, or search 4,600+.

- Trust score: 70/100 (medium)
- Change this week: +5
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-28

## Components

- remote · `sfxmint.com`: 70/100 (this document), [markdown](https://verifymcp.io/servers/com-sfxmint-sounds/sfxmint.md), [page](https://verifymcp.io/servers/com-sfxmint-sounds/sfxmint)

## Channel facts

- Endpoint: `https://sfxmint.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.1.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-28.

- **Endpoint Security**: 63/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 4 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 62/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1305 tokens (~326/item across 4 items; 4 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 40/100
  - Stability check failed: schema churn in the 27 days we've observed: 2 tool removals, 0 breaking changes, 0 auth/transport breaks, 2 additions.
- **Tool Coverage**: 98/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 93% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the com.sfxmint/sounds MCP server?

com.sfxmint/sounds is a hosted endpoint at https://sfxmint.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http com-sfxmint-sounds 'https://sfxmint.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-sfxmint-sounds": {
      "url": "https://sfxmint.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-sfxmint-sounds": {
      "type": "http",
      "url": "https://sfxmint.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-sfxmint-sounds]
url = "https://sfxmint.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-sfxmint-sounds": {
      "type": "remote",
      "url": "https://sfxmint.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-sfxmint-sounds --url 'https://sfxmint.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-sfxmint-sounds:
    url: "https://sfxmint.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-sfxmint-sounds": {
      "Transport": "http",
      "Url": "https://sfxmint.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-sfxmint-sounds -t streamable-http -u 'https://sfxmint.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-sfxmint-sounds": {
      "type": "http",
      "url": "https://sfxmint.com/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-28 (score 70, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-27 (score 69, +5)

- [security improvement] HTTPS: unverified → pass
- [security] Tool “get_role_sound” rewrote its description, which is the text the model reads
- [security] Tool “search_sounds” rewrote its description, which is the text the model reads
- [cosmetic] “get_role_sound” reworded the description of “role”

### 2026-09-26 (score 64, 0)

- [security] Tool “get_sound” rewrote its description, which is the text the model reads

### 2026-09-25 (score 64, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-23 (score 63, −2)

- [security regression] Tool “get_job” was removed
- [security] The server rewrote its instructions, which are the text every model session reads
- [functional regression] Schema quality: 273 → 332
- [functional improvement] Tool coverage: 87% → 93%
- [functional] Server version: 1.0.0 → 1.1.0

### 2026-09-21 (score 65, +1)

No change was recorded against any check on this day. Stability & Change Management went from 35 to 39.

### 2026-09-19 (score 64, +1)

No change was recorded against any check on this day. Stability & Change Management went from 29 to 32.

### 2026-09-17 (score 63, 0)

- [security] Tool “search_sounds” rewrote its description, which is the text the model reads
- [cosmetic] “search_sounds” reworded the description of “format”

## MCP tools (4)

### `search_sounds` (~379 tokens)

Free-text search over the SFXMint library of free CC0 sound effects. Use it for sound descriptions, additional constraints or gaps left by another tool. Choose get_role_sound for a named event or get_sound_set for multiple events when that fits the task; these are task branches, not a fixed sequence. Exact keyword matches come first, then semantic nearest neighbours; hard constraints are applied before the result limit and a request may validly return no qualified candidate with near-match diagnostics. Returns direct, hotlinkable MP3/WAV URLs and verified OGG (Vorbis) URLs where available — no API key, no attribution required — plus measured acoustics (attack_ms, tail_ms, centroid_hz), character labels like 'bright · punchy · tight', loop/file-QC status, and score/match as ranking evidence only (role = known role default, exact = all words hit, partial = some words hit, semantic = nearest by meaning).

Input parameters:

- `category` (string): Optional category slug: ui, retro-game, transition, impact, ambience, water, fire-electric, footsteps, door, mechanical, paper-fabric, glass, animal, crowd, cartoon, magic-scifi, horror, feedback, in…
- `format` (string): Delivery format (ogg = Ogg Vorbis); loop=true defaults to WAV when omitted.
- `limit` (number): Max results (default 20, max 50)
- `loop` (boolean): Require (true) or exclude (false) a candidate marked with prepared loop metadata; seam evidence is returned separately.
- `max_duration_ms` (number): Hard maximum delivered duration in milliseconds; format-specific measurement is required.
- `query` (string, required): Keywords or a natural-language description, e.g. 'door slam', 'soft UI confirmation chime', 'coin pickup'

### `get_role_sound` (~427 tokens)

Choose this when the task calls for a sound for a named event or interaction — a button click, purchase success, error beep, level-up, dialogue blip, notification. Pass the role as plain words: role ids (click, success, purchase-success, dialogue-blip, notification…) and common aliases (button click, ka-ching, jump scare, text blip…) are all accepted. Returns a qualified candidate for that role when one satisfies the requested constraints, with MP3/WAV URLs, 2-3 alternates and the family page for browsing more. Five core game roles include content_check (verified/unverified/rejected), scoped to scene, role, format and exact file SHA256; unverified previews are not certified suitable. Download selected files locally and retain originals. Task-permitted processing requires a recipe, output SHA256, renewed file checks and a listening check; changed bytes do not inherit content review. Other task-permitted sources or local synthesis may be mixed in. Optional style: crisp (short, bright, dry), soft (darker, gentler), spacious (reverb, longer tail), balanced (default: most typical). For multiple events consider get_sound_set; use search_sounds for a description or a gap. These are task branches, not a fixed sequence. Unknown roles return not_found with the full role list; GET https://sfxmint.com/api/v1/roles lists roles with aliases.

Input parameters:

- `format` (string)
- `loop` (boolean): Require prepared loop metadata; seam evidence is returned separately.
- `max_duration_ms` (number): Hard maximum delivered duration in milliseconds.
- `role` (string, required): Role id or alias, e.g. 'click', 'button click', 'purchase-success', 'ka-ching', 'error beep', 'level-up', 'dialogue blip', 'notification'
- `style` (string): Optional. balanced (default) = the family's most typical take; crisp = short, bright, dry; soft = darker, gentler; spacious = reverb, longer tail

### `get_sound` (~55 tokens)

Get full metadata for one sound by slug, including download URLs, description and measured acoustics (attack/tail/brightness + character labels).

Input parameters:

- `slug` (string, required): Sound slug, e.g. 'impact-punch-01'

### `get_sound_set` (~186 tokens)

Get a coherent set of sounds for an app or game in one call — one sound per role, with format metadata, hashes and stable download URLs. Use it when the task needs a whole kit; use get_role_sound for one event. Check content_check: verified/unverified/rejected is bound to the exact role, format and file SHA256; unverified files still require listening in context. Sets include UI styles, game and app scenarios, acoustic-drum-kit, animal-calls (15 isolated calls), and dungeon-traps (6 isolated mechanisms).

Input parameters:

- `format` (string): File format for selection and checks (default WAV). Legacy urls remains MP3; download_urls follows this format.
- `set` (string): Set id (default ui-crisp). Includes acoustic-drum-kit, animal-calls and dungeon-traps alongside the UI and scenario sets listed in the enum.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-sfxmint-sounds/sfxmint#diagnostics

## Score history

- 2026-09-28: 70
- 2026-09-27: 69
- 2026-09-26: 64
- 2026-09-25: 64
- 2026-09-24: 63
- 2026-09-23: 63
- 2026-09-22: 65
- 2026-09-21: 65
- 2026-09-20: 64
- 2026-09-19: 64
- 2026-09-18: 63
- 2026-09-17: 63
- 2026-09-16: 63
- 2026-09-15: 62
- 2026-09-14: 61
- 2026-09-13: 61
- 2026-09-12: 61
- 2026-09-11: 60
- 2026-09-10: 64
- 2026-09-09: 68
- 2026-09-08: 67
- 2026-09-07: 67
- 2026-09-06: 67
- 2026-09-05: 66
- 2026-09-04: 66
- 2026-09-03: 66
- 2026-09-02: 67
- 2026-09-01: 64

## Common questions

### What is the com.sfxmint/sounds MCP server?

com.sfxmint/sounds is an MCP server listed in the public MCP registry as com.sfxmint/sounds. Free CC0 sound effects for agents: ask by role (button-click, coin), sets, or search 4,600+. This page covers its hosted endpoint (https://sfxmint.com/mcp).

### Is the com.sfxmint/sounds MCP server safe to use?

com.sfxmint/sounds scores 70 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the com.sfxmint/sounds MCP server expose?

com.sfxmint/sounds exposes 4 tools: search_sounds, get_role_sound, get_sound, get_sound_set. Their descriptions and schemas cost roughly 1,047 tokens of context every time the server is loaded.

### Does the com.sfxmint/sounds MCP server require authentication?

No. We connected to com.sfxmint/sounds without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the com.sfxmint/sounds MCP server still maintained?

com.sfxmint/sounds is still listed as active in the MCP registry. We last reached this channel on 28 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://sfxmint.com/mcp
- Website: https://sfxmint.com/api/docs
- Changelog RSS feed: https://verifymcp.io/servers/com-sfxmint-sounds/sfxmint.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-sfxmint-sounds/sfxmint.json
- HTML version of this page: https://verifymcp.io/servers/com-sfxmint-sounds/sfxmint