You make the music. It runs the session.
Type the setlist into Claude. CheckCheck builds the show in your DAW: each song's tempo and time signature, count-ins, key markers, click and cue tracks, patch changes and a set sheet for the band. Live in REAPER, and as a ready-to-open project for Logic Pro.
Free to join, no payment now. Works inside the Claude app on your Mac, with your own Claude plan. Nothing you play leaves your computer.
Example set uses public-domain hymns. Results and checklists use the wording the tools return; the Logic export was run for real with this set.
Every week the songs change and the prep doesn't. CheckCheck does the part that needs no taste, then shows you exactly what it did.
The job most keys players and MDs rebuild from scratch.
You say
"Prep Sunday: Come Thou Fount in D at 76, Be Thou My Vision in Eb, 3/4 at 92, It Is Well in C, 6/8 at 54 per dotted quarter. One bar count-in, two bars between songs. Patches 1, 2 and 3."| # | Song | Key | Tempo | Starts | Time |
|---|---|---|---|---|---|
| 1 | Come Thou Fount | D | 76, 4/4 | bar 2 | 0:03 |
| 2 | Be Thou My Vision | E♭ | 92, 3/4 | bar 77 | 3:59 |
| 3 | It Is Well | C | 54 dotted quarter, 6/8 | bar 144 | 6:10 |
From Planning Center, a group text or a chart. Titles, keys and tempos are all it needs.
Say which DAW, how long the count-ins are and which patches go with which song.
Claude shows the set first. Nothing changes until you agree, and it's one undo step after.
Count-ins, click, markers and patch changes are in place. Print the set sheet for the band.
One tool, a few very different Thursdays. Here's what each looks like today, including what it can't do yet.
REAPER live. Logic Pro and MainStage rigs through a MIDI file.
"The set is in Planning Center on Tuesday. I rebuild the show and my patches every week."
REAPER live. Logic and others by file.
"The song order changed again an hour before soundcheck."
REAPER live.
"Same template, same colors, same routing, every session."
REAPER with OSARA.
"Routing a sidechain is dozens of keystrokes with a screen reader."
We're testing with blind producers using VoiceOver, NVDA and OSARA before we claim more. This card will list exactly what was tested.
Logic Pro 11 and later. No Creator Studio subscription needed.
"I just want my usual tracks, tempo and song sections ready to record."
Logic gets a new project from a MIDI file. It can't color, route or edit a project you already have open.
It doesn't write songs or mix by ear. It does the setup you already know how to do, in the time it takes to say it.
Six starting points (band tracking, beats, mixing, podcast, worship playback, orchestral) or your own description. Folders, colors, panning and plugins.
Clean up file-style names, color by instrument and fold loose tracks into Drums, Bass and Vocals. See the whole plan before anything moves.
"Duck the bass and pads under the kick." Sends, channel counts and compressor keying, done the way an engineer would. Threshold and ratio stay yours.
Colored regions for every section, tempo and meter included. It writes MIDI notes only when you spell them out, like a bass line you hum in note names.
Every change is read back from the DAW before it says done, so you hear about anything that didn't land.
A whole set or a 40-track template is a single Cmd+Z, labeled with what it did.
If one part fails, everything before it is rolled back. No half-built shows.
You get a checklist of what REAPER or the file now holds, written in plain words.
Any chore can show its plan without touching the session.
Undo only reverses CheckCheck's own steps and refuses yours.
Stock REAPER. No SWS, no Python, no open ports. One small script you can read or remove.
What setup looks like once your early-access invite arrives, if you already have the Claude app. Logic users can skip step three.
Claude for Mac, signed in with your Claude plan. The plan is billed by Anthropic, not by us.
Open the CheckCheck file from your invite, then in Claude open Settings, Extensions, Advanced settings, and choose Install Extension.
With REAPER open, say Set up CheckCheck for REAPER, then What's in my session?
REAPER pauses scripts while a dialog is open. If the evaluation reminder is showing, click Still Evaluating once it unlocks. More on the support page.
CheckCheck uses your own Claude plan, so there are no credits and no AI markup. These are the prices we plan to charge. Nothing is sold yet: join the list and we'll email you when you can try it and buy it.
$0Early access by email
$39 PlannedOne-time, one DAW, a year of updates
$69 PlannedOne-time, every DAW as it ships
You also need a Claude plan that can run desktop extensions, billed by Anthropic.
No payment is taken on this page.
Tell us what you prep and in which DAW. We'll email you when your early access is ready.
No. It does setup: tracks, names, colors, routing, plugins, markers, tempo maps and setlists. It writes MIDI notes only when you spell them out. Your sound, your parts and your mix stay yours.
CheckCheck itself will be a one-time price; the prices above are what we plan to charge. The AI runs on your own Claude plan, which Anthropic bills separately. There are no credits.
REAPER 7 is controlled live and was verified in 7.85 on macOS. Logic Pro gets a new project from a MIDI file, verified in 11.1.2. Ableton Live, FL Studio and Cubase can import the same file; we're still testing those. Windows support for REAPER is in testing.
Not directly. The set file carries a patch change at the start of every song, so you can send it from Logic or REAPER to MainStage or your keyboard. Setting up that routing is up to your rig.
Planning Center has its own connector for Claude. We're testing reading this week's plan with it and prepping the set in the same conversation. Until that's confirmed, paste the plan or type the songs.
Not yet. Today it builds the tempo map, count-ins, markers, click, cues and patch changes. Placing stems per song is the next feature on the list.
Tell it whether the tempo counts dotted quarters or eighths. "6/8 at 54 per dotted quarter" becomes 81 quarter-note BPM in REAPER, the unit REAPER and MIDI files use.
Each chore is one undo step, and a chore that fails partway rolls itself back. Undo from Claude or from REAPER's Edit menu.
No audio ever leaves. Claude sees track names, colors, plugin names, settings and the setlist you type, so it can do the chore. CheckCheck itself makes no network calls.
You work through the Claude app, and every result comes back as text, so it can sit alongside REAPER with OSARA. We're testing the whole setup with blind producers and will publish exactly what works before claiming more.
Your email and answers go into a private sheet. We'll email you when early access is ready and when you can buy it, and nothing else. Reply to any email from us and we'll delete your details.
Join the list and tell us what your Sunday looks like.