Piano synth · gpt-6-luna
Output saved · Stopped by an API error Cost / run $0.0035 Runtime 286.5s
A model request failed and its retries ran out. The output is the HTML saved before that.
Prompt for this run
Build a playable piano keyboard using the provided Tone.js library. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. Use the provided `tone.min.js` (global `Tone`) through a plain local script tag; the runner will inline it into the final artifact. Required behavior: - Display one chromatic octave from C4 through C5, with correctly placed black and white keys and visible note labels. - Map computer keys A W S E D F T G Y H U J K in order to those 13 notes. Pressing a screen key or its computer key starts the note; releasing it starts the envelope's release phase. - Use a synthesized voice with an ADSR envelope and support at least three simultaneous notes. Highlight keys while held. Prevent keyboard auto-repeat from creating duplicate sustained voices. - Release held voices when the pointer is released outside a key or the window loses focus, so notes cannot remain stuck. - Activate audio through a user gesture and synthesize all sound without audio files. Display the computer-key mapping. Verify: Play a few notes using the available mouse and keyboard actions. Check note/key labeling, any observable press-and-release highlighting, and the console after audio activation. Briefly inspect the input handlers for matching note-start and note-release behavior.
TAKE IT TO CODE
A single self-contained HTML file — copy it and open in any browser, or reuse the prompt with your own pi-agent run.
RUN
METRICS
Transcript · 21 messages
Build a playable piano keyboard using the provided Tone.js library. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. Use the provided `tone.min.js` (global `Tone`) through a plain local script tag; the runner will inline it into the final artifact. Required behavior: - Display one chromatic octave from C4 through C5, with correctly placed black and white keys and visible note labels. - Map computer keys A W S E D F T G Y H U J K in order to those 13 notes. Pressing a screen key or its computer key starts the note; releasing it starts the envelope's release phase. - Use a synthesized voice with an ADSR envelope and support at least three simultaneous notes. Highlight keys while held. Prevent keyboard auto-repeat from creating duplicate sustained voices. - Release held voices when the pointer is released outside a key or the window loses focus, so notes cannot remain stuck. - Activate audio through a user gesture and synthesize all sound without audio files. Display the computer-key mapping. Verify: Play a few notes using the available mouse and keyboard actions. Check note/key labeling, any observable press-and-release highlighting, and the console after audio activation. Briefly inspect the input handlers for matching note-start and note-release behavior.
thinking
{"command":"ls -la && pwd","timeout":10}total 356 drwx------ 3 node node 4096 Oct 14 01:15 . drwxrwxrwt 6 root root 4096 Oct 14 01:15 .. drwxr-xr-x 3 node node 4096 Oct 14 01:15 .home -rw-r--r-- 1 node node 349169 Oct 14 01:15 tone.min.js /tmp/job-tW5cyu
thinking
**Designing a keyboard layout** I'm thinking about creating a keyboard layout. Specifically, I want C5 to be white. I'll set the CSS for white keys, with eight keys in total. The black keys will be positioned based on percentage boundaries. For each white key index [0,1,3,4,5], the left position will be calculated as (i+1)*12.5% minus half of the width. It seems like a good plan, and I'm trying to get the proportions just right!**Designing keyboard controls** I’m focusing on the keyboard layout and label design. I want key labels on both the visible notes and a shortcut map, ensuring no collisions. Each note, like C4, needs a clear display with distinct activation methods. I’m thinking about including an audio enable button that’s responsive to the first key press. Also, I want to make sure using pointers doesn’t interfere with the keyboard actions. It’s a bit complex, but I’m trying to get it all right!**Managing sound synthesis and control** I’m focused on releasing the global blur and handling visibility changes. I want to clear any held voices gracefully while ensuring visual feedback is reset consistently. The tone management for PolySynth should only release notes when their count reaches zero. For note management, I’m considering a mapping between notes and keyboard keys, and I want to track owners of notes effectively. I plan to trigger calls synchronously after starting the Tone library, so I’ll make sure everything is set up elegantly.
index.html (10967 bytes)Successfully wrote to index.html
thinking
{"action":"inspect","x":0,"y":0,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","log: %c * Tone.js v14.8.49 * background: #000; color: #fff","error: Creating a worker from 'blob:http://127.0.0.1:36809/b72e9e05-d7ec-4b1d-8ded-f9b2ef267d5f' violates the following Content Security Policy directive: \"worker-src 'none'\". The action has been blocked.","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio"],"dom":"A SMALL INSTRUMENT FOR YOUR BROWSER\n\nLittle Keys.\n\nOne octave. A world of possibilities.\n\nEnable audio\nCHROMATIC KEYBOARD\nC4 — C5 / 13 NOTES\nA\nC4\nS\nD4\nD\nE4\nF\nF4\nG\nG4\nH\nA4\nJ\nB4\nK\nC5\nW\nC♯4\nE\nD♯4\nT\nF♯4\nY\nG♯4\nU\nA♯4\nPlay with your keyboard A W S E D F T G Y H U J K\nC4 → C♯4 → D4 → D♯4 → E4 → F4 → F♯4 → G4 → G♯4 → A4 → A♯4 → B4 → C5\n\nHold a key to sustain the note · Release to let it ring out","images":"attached"}
thinking
{"action":"click","x":180,"y":580,"toX":180,"toY":580,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","log: %c * Tone.js v14.8.49 * background: #000; color: #fff","error: Creating a worker from 'blob:http://127.0.0.1:36809/b72e9e05-d7ec-4b1d-8ded-f9b2ef267d5f' violates the following Content Security Policy directive: \"worker-src 'none'\". The action has been blocked.","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio"],"dom":"A SMALL INSTRUMENT FOR YOUR BROWSER\n\nLittle Keys.\n\nOne octave. A world of possibilities.\n\nAudio ready\nCHROMATIC KEYBOARD\nC4 — C5 / 13 NOTES\nA\nC4\nS\nD4\nD\nE4\nF\nF4\nG\nG4\nH\nA4\nJ\nB4\nK\nC5\nW\nC♯4\nE\nD♯4\nT\nF♯4\nY\nG♯4\nU\nA♯4\nPlay with your keyboard A W S E D F T G Y H U J K\nC4 → C♯4 → D4 → D♯4 → E4 → F4 → F♯4 → G4 → G♯4 → A4 → A♯4 → B4 → C5\n\nHold a key to sustain the note · Release to let it ring out","images":"attached"}
thinking
{"action":"key","x":0,"y":0,"toX":0,"toY":0,"text":"a","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","log: %c * Tone.js v14.8.49 * background: #000; color: #fff","error: Creating a worker from 'blob:http://127.0.0.1:36809/b72e9e05-d7ec-4b1d-8ded-f9b2ef267d5f' violates the following Content Security Policy directive: \"worker-src 'none'\". The action has been blocked.","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio"],"dom":"A SMALL INSTRUMENT FOR YOUR BROWSER\n\nLittle Keys.\n\nOne octave. A world of possibilities.\n\nAudio ready\nCHROMATIC KEYBOARD\nC4 — C5 / 13 NOTES\nA\nC4\nS\nD4\nD\nE4\nF\nF4\nG\nG4\nH\nA4\nJ\nB4\nK\nC5\nW\nC♯4\nE\nD♯4\nT\nF♯4\nY\nG♯4\nU\nA♯4\nPlay with your keyboard A W S E D F T G Y H U J K\nC4 → C♯4 → D4 → D♯4 → E4 → F4 → F♯4 → G4 → G♯4 → A4 → A♯4 → B4 → C5\n\nHold a key to sustain the note · Release to let it ring out","images":"attached"}
thinking
**Inspecting audio handling** I need to check the code for input handlers and fix any bugs. It's crucial to ensure `ensureAudio` is called correctly at the start for polyphonic tones since `audioReady` sets the state. The `Tone.PolySynth` should have its notes triggered properly. When hitting the black key, the pointer events should bubble up correctly. I might need to ensure audio readiness on pointer down. It seems there are CSP errors from the Tone library’s worker, and I should check the console for warnings and activation logs.**Checking audio activation issues** I need to explore the console after audio activation. The error might originate from the library worker, so I'll inspect local user gestures to see if clicks register correctly. The text indicating audio readiness could be impacted by the browser's autoplay policy. There are no new console warnings. I need to ensure the key mapping works, especially with the black key labels. The pointer events seem to function well, but there's an issue with the pointer sliding between keys without a handler. Implementing a pointer enter would be better, or I might not claim that functionality at all. It could be helpful to verify this with Playwright as browser tooling doesn't support mousedown distinctly.**Exploring drag interactions** I might implement a browser drag feature from key to key using pointerdown and move events. The idea would be to drag from the center of C4 to D4 and then release. This would start with a pointerdown on C4 and end with a global pointerup outside the key. I should consider checking if black keys overlap with the underlying white keys, which seems to be the case. Also, the source should not trigger audio when the mouse moves over a key, so I’ll make sure to clarify that.**Evaluating code interactions** I'm looking into library code, specifically regarding search terms and the browser console after clicks. The audio function `Tone.start()` creates a context without errors, which is good. I need to test keyboard input effects, like how typing triggers key events. Maybe I could explore motion, but currently, there's nothing active. The user asked for a brief report on screen clicks and keyboard actions. I need to ensure the final file exists and may check `git diff`, although that might not be relevant.
{"action":"drag","x":180,"y":540,"toX":1120,"toY":740,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","log: %c * Tone.js v14.8.49 * background: #000; color: #fff","error: Creating a worker from 'blob:http://127.0.0.1:36809/b72e9e05-d7ec-4b1d-8ded-f9b2ef267d5f' violates the following Content Security Policy directive: \"worker-src 'none'\". The action has been blocked.","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio"],"dom":"A SMALL INSTRUMENT FOR YOUR BROWSER\n\nLittle Keys.\n\nOne octave. A world of possibilities.\n\nAudio ready\nCHROMATIC KEYBOARD\nC4 — C5 / 13 NOTES\nA\nC4\nS\nD4\nD\nE4\nF\nF4\nG\nG4\nH\nA4\nJ\nB4\nK\nC5\nW\nC♯4\nE\nD♯4\nT\nF♯4\nY\nG♯4\nU\nA♯4\nPlay with your keyboard A W S E D F T G Y H U J K\nC4 → C♯4 → D4 → D♯4 → E4 → F4 → F♯4 → G4 → G♯4 → A4 → A♯4 → B4 → C5\n\nHold a key to sustain the note · Release to let it ring out","images":"attached"}
thinking
**Evaluating pointer events** I'm observing a subtle green bottom, possibly from a screenshot or a ring. The class should be removed on pointer up, so I'm wondering if that's affecting the display. The DOM inspection shows no classes, and the border is likely focused. When dragging, it seems the green might be a result of events not reaching the end. I need to check the pointerId and synthetic drag events. I'll need to explore the DOM further to clarify these behaviors.**Analyzing pointer events and styles** I see that the small bright lime color under the key suggests the held style persists, possibly due to pointer up occurring outside the button. Pointer events usually lead to implicit capture on pointer down, so the button remains the target for pointer events, although this might not work with dragging. The lime could be a focus outline while the held state reflects a green border with a certain transform. I wonder if the browser's drag action doesn't trigger pointer up events, leaving the state stuck. I really need to ensure robust handling of pointer events!**Exploring drag tool behavior** I’m considering whether the browser's drag tool might send move or up events, and if the visual class remains, the release may not trigger properly. I think I should inspect the DOM with the browser tools. Adding a mouse up fallback could be useful if the pointer up event doesn’t register. It seems that dragging might leave the mouse down state. The lime outline could indicate focus due to keyboard interaction. It's interesting how the browser might handle mouse clicks as hover or focus states!**Investigating mouse events** I’m trying to determine if there’s an issue with the mouse events and pointer release. It seems like if no "up" event is sent at all, the problem persists. I can inspect the DOM via a source query, but I can’t evaluate it in the browser. I wonder if taking screenshots after the next click will help. Clicking outside the body to trigger a pointer-up event could be worthwhile as well. Let’s see what this reveals!
{"action":"click","x":1100,"y":700,"toX":1100,"toY":700,"text":"","delta":0}Frame 1, +1ms
[Browser image supplied to model]
{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","log: %c * Tone.js v14.8.49 * background: #000; color: #fff","error: Creating a worker from 'blob:http://127.0.0.1:36809/b72e9e05-d7ec-4b1d-8ded-f9b2ef267d5f' violates the following Content Security Policy directive: \"worker-src 'none'\". The action has been blocked.","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio"],"dom":"A SMALL INSTRUMENT FOR YOUR BROWSER\n\nLittle Keys.\n\nOne octave. A world of possibilities.\n\nAudio ready\nCHROMATIC KEYBOARD\nC4 — C5 / 13 NOTES\nA\nC4\nS\nD4\nD\nE4\nF\nF4\nG\nG4\nH\nA4\nJ\nB4\nK\nC5\nW\nC♯4\nE\nD♯4\nT\nF♯4\nY\nG♯4\nU\nA♯4\nPlay with your keyboard A W S E D F T G Y H U J K\nC4 → C♯4 → D4 → D♯4 → E4 → F4 → F♯4 → G4 → G♯4 → A4 → A♯4 → B4 → C5\n\nHold a key to sustain the note · Release to let it ring out","images":"attached"}
thinking
**Reviewing code logic** I need to finalize the file path and decide whether to run a recheck after editing. It seems unnecessary if no edits are needed, but I'd want to inspect the source handlers. I see that the code suggests that the pointer can slide onto another key while held, but there’s no mention of pointerover. I could remove the comment about that mismatch. Improving pointerout for a more intuitive experience with a click-and-drag feel also sounds good. The user mentions that starting a note happens with a screen key, but doesn’t make it explicit about dragging.**Clarifying focus management** I'm thinking about the keys and potential focus management for the audio status button. I need it to get focused and have the keydown mapped correctly. It looks like I'll need to create a class that gets released immediately on pointerup. However, I realized I need to focus on when the pointer is released outside a key and not just when it leaves. I guess I should also remove any inaccurate comments to keep things clear.
{"path":"index.html","edits":[{"oldText":" // A pointer can slide directly onto another piano key while held.\n releaseToken(tokenSuccessfully replaced 1 block(s) in index.html.
thinking
**Inspecting output changes** I need to double-check the affected parts. It seems like I'll reload and take a look at the initial output console according to the addendum. I've already inspected it, but just to be safe, I’ll focus on the final saved changes for comments, even if there's no behavioral change. Maybe I’ll also test key events after the audio activation is completed. So, I’ll reload and inspect again to make sure everything's final.
{"action":"reload","x":0,"y":0,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","log: %c * Tone.js v14.8.49 * background: #000; color: #fff","error: Creating a worker from 'blob:http://127.0.0.1:32877/e636ce1d-a3e2-4435-bd9d-01bed1968c99' violates the following Content Security Policy directive: \"worker-src 'none'\". The action has been blocked.","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio"],"dom":"A SMALL INSTRUMENT FOR YOUR BROWSER\n\nLittle Keys.\n\nOne octave. A world of possibilities.\n\nEnable audio\nCHROMATIC KEYBOARD\nC4 — C5 / 13 NOTES\nA\nC4\nS\nD4\nD\nE4\nF\nF4\nG\nG4\nH\nA4\nJ\nB4\nK\nC5\nW\nC♯4\nE\nD♯4\nT\nF♯4\nY\nG♯4\nU\nA♯4\nPlay with your keyboard A W S E D F T G Y H U J K\nC4 → C♯4 → D4 → D♯4 → E4 → F4 → F♯4 → G4 → G♯4 → A4 → A♯4 → B4 → C5\n\nHold a key to sustain the note · Release to let it ring out","images":"attached"}