Media

Audio Delay

Add a delay effect

file· File resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

# 1) Upload each file first → returns { filePath }
curl -X POST 'https://api.elysiatools.com/upload/audio-delay' \
  -F 'file=@/path/to/audioFile.ext'

# 2) Call the tool with the returned filePath values
curl -X POST 'https://api.elysiatools.com/en/api/tools/audio-delay' \
  -F 'audioFile=/path/to/file.ext' \
  -F 'delayMs=250' \
  -F 'feedback=0.4' \
  -F 'mix=0.4' \
  -F 'tempoSync=none' \
  -F 'outputFormat=mp3'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/audio-delay

Parameters

Name	Type	Required	Description
audioFile	fileupload required	Yes	—
delayMs	number	No	Time between original sound and delayed repetition. Common values: 100-500ms for slapback, 250-750ms for rhythmic delays.
feedback	range	No	Controls how much delayed sound feeds back into itself. Higher values create longer decay tails.
mix	range	No	Balance between dry (original) and wet (delayed) signal. 0 = dry only, 0.5 = equal mix, 1.0 = wet only.
tempoSync

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-audio-delay": {
      "name": "audio-delay",
      "description": "Add a delay effect",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=audio-delay",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "audio-delay",
    "arguments": {
  "audioFile": "https://example.com/file.ext",
  "delayMs": 250,
  "feedback": 0.4,
  "mix": 0.4,
  "tempoSync": "none",
  "outputFormat": "mp3"
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

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