eyes.tools
small tools for text, code, images and everyday use
First seen 2026-11-05 · Last seen 2026-11-05 · Source: webmcp.com
Answer 7 · Act 35 · Transact 0 · Score: Not yet scored
Tool inspector
make_spectrogram
[Site-provided MCP tool — executes with your session credentials.] Draw a sound's spectrogram: time left to right, frequency from 0 at the bottom to half the sample rate at the top, louder as brighter (white on black, 80 dB of range). Returns the picture as a PNG image with the sound's length, sample rate and channels. Send the sound as base64, up to 10 MB and about six minutes of stereo: wav, mp3, flac, ogg vorbis or opus. On the spectrogram page, the browser reads more formats (m4a, aac, webm) and the file the visitor chose is drawn when none is sent. Runs on the eyes.tools server, which keeps nothing it is sent.
Page: /
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
audio |
string | yes | The sound, as base64 or a data: URL. On the spectrogram page, leave it out to use the file the visitor chose. |
width |
integer | no | Pixels across: one column of the transform each. |
height |
integer | no | Pixels from 0 Hz to the top frequency. |
Raw JSON schema
{
"type": "object",
"properties": {
"audio": {
"type": "string",
"contentEncoding": "base64",
"contentMediaType": "audio/*",
"maxLength": 14000000,
"description": "The sound, as base64 or a data: URL. On the spectrogram page, leave it out to use the file the visitor chose."
},
"width": {
"type": "integer",
"minimum": 64,
"maximum": 2048,
"default": 960,
"description": "Pixels across: one column of the transform each."
},
"height": {
"type": "integer",
"minimum": 64,
"maximum": 1024,
"default": 480,
"description": "Pixels from 0 Hz to the top frequency."
}
},
"required": [
"audio"
],
"additionalProperties": false,
"examples": [
{
"audio": "data:audio/wav;base64,UklGRiQCAABXQVZFZm10IBAAAAABAAEAQB8AAIA+AAACABAAZGF0YQACAAAAACUh4C4lIQAA294g0dveAAAlIeAuJSEAANveINHb3gAAJSHgLiUhAADb3iDR294AACUh4C4lIQAA294g0dveAAAlIeAuJSEAANveINHb3gAAJSHgLiUhAADb3iDR294AACUh4C4lIQAA294g0dveAAAlIeAuJSEAANveINHb3gAAJSHgLiUhAADb3iDR294AACUh4C4lIQAA294g0dveAAAlIeAuJSEAANveINHb3gAAJSHgLiUhAADb3iDR294AACUh4C4lIQAA294g0dveAAAlIeAuJSEAANveINHb3gAAJSHgLiUhAADb3iDR294AACUh4C4lIQAA294g0dveAAAlIeAuJSEAANveINHb3gAAJSHgLiUhAADb3iDR294AACUh4C4lIQAA294g0dveAAAlIeAuJSEAANveINHb3gAAJSHgLiUhAADb3iDR294AACUh4C4lIQAA294g0dveAAAlIeAuJSEAANveINHb3gAAJSHgLiUhAADb3iDR294AACUh4C4lIQAA294g0dveAAAlIeAuJSEAANveINHb3gAAJSHgLiUhAADb3iDR294AACUh4C4lIQAA294g0dveAAAlIeAuJSEAANveINHb3gAAJSHgLiUhAADb3iDR294AACUh4C4lIQAA294g0dveAAAlIeAuJSEAANveINHb3g==",
"width": 256,
"height": 128
}
]
}
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