strudel-webmcp.vercel.app
A live Strudel REPL with WebMCP. Live-code together.
First seen 2026-11-05 · Last seen 2026-11-05 · Source: webmcp.com
Answer 3 · Act 10 · Transact 0 · Score: Not yet scored
Tool inspector
strudel_evaluate
Evaluate with Strudel's native Update action, exactly like the human pressing Ctrl+Enter: if music is already playing, the pattern is swapped on the running clock without stopping. Default: the whole visible document. With range: solo, play only that slice of the visible source (e.g. one stack entry) to hear it in isolation; the page shows a Solo chip until the next full evaluate. With proposalId: audition a pending proposal without changing the document. Requires expectedCodeHash. Returns EVALUATION_ERROR with a bounded diagnostic if the code fails, and AUDIO_GESTURE_REQUIRED if playback is stopped and the browser has not yet seen a user gesture.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
expectedCodeHash |
string | yes | The codeHash returned by the most recent strudel_get_code or strudel_get_context call. Rejected with STALE_CODE if the human changed the source since. |
range |
object | no | Solo: evaluate only this range of the visible source (must be a complete pattern expression, e.g. one stack entry). The next full evaluate clears the solo. |
proposalId |
string | no | Audition a pending proposal: play its code without changing the document. The human then accepts or discards it. |
Raw JSON schema
{
"type": "object",
"properties": {
"expectedCodeHash": {
"type": "string",
"description": "The codeHash returned by the most recent strudel_get_code or strudel_get_context call. Rejected with STALE_CODE if the human changed the source since."
},
"range": {
"type": "object",
"description": "Solo: evaluate only this range of the visible source (must be a complete pattern expression, e.g. one stack entry). The next full evaluate clears the solo.",
"properties": {
"start": {
"type": "object",
"properties": {
"line": {
"type": "integer",
"minimum": 0,
"description": "Zero-based line number."
},
"column": {
"type": "integer",
"minimum": 0,
"description": "Zero-based column (UTF-16 code units)."
}
},
"required": [
"line",
"column"
],
"additionalProperties": false
},
"end": {
"type": "object",
"properties": {
"line": {
"type": "integer",
"minimum": 0,
"description": "Zero-based line number."
},
"column": {
"type": "integer",
"minimum": 0,
"description": "Zero-based column (UTF-16 code units)."
}
},
"required": [
"line",
"column"
],
"additionalProperties": false
}
},
"required": [
"start",
"end"
],
"additionalProperties": false
},
"proposalId": {
"type": "string",
"description": "Audition a pending proposal: play its code without changing the document. The human then accepts or discards it."
}
},
"required": [
"expectedCodeHash"
],
"additionalProperties": false
}
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