1
Upload Your Creative
Drop in any ad, video, or piece of content — a link or a file. That’s the whole setup.
Drop a video or audio file
Decode what viewers feel,then shape it.
We tell you how your video actually plays to people, so you can cut it for whatever result you want from any audience.
Your ad’s complete signal readout
Every second, decoded. We read four signals and every cut to show exactly how the video plays, and the moment it loses people.
- Hold72%High
- Live responseLiveHold62%Motion31%Sound72%Speech38%
- Hook28%LowHold decays after the 6s mark.
- Speech44%Moderate
- SegmentsWeakProposed0:000:040:090:140:19
- Peak moment0:12Hold tips over
How it works
Score any ad in three steps
No panels. No surveys. Sentinel reads your creative the way a viewer receives it: motion, sound, speech and cuts, in under a minute.
2
We Read It Second By Second
Sentinel measures every second as it plays, mapping hold, motion, sound, speech and cuts as they happen.
3
Read The Response
Get the full readout — where attention holds, the exact second it peaks, what to cut — and optimize for the result you want.
B+71/100Strong
Attention holds to 0:12, which is where it peaks.
The API
One POST, every signal back
The same readout, straight from your pipeline. Send a video URL, poll the scan, read every signal per second.
$ curl -X POST getsentinel.ai/v1/scans \ -H "Authorization: Bearer $KEY" \ -d '{"video_url": "…/ad.mp4"}'
1
Send your ad
POST a video URL or file with your API key. No SDK required, it is plain HTTPS.
$ curl .../v1/scans/scn_a41c9 {"status": "processing", "pct": 62}
2
Sentinel reads it
Motion, sound, speech and cuts are measured every second as the video plays.
{
"score": 71, "grade": "B+",
"peak": 12.4,
"hold": [64, 66, 71, …]
}3
Read every signal
The response carries the full per-second readout. Pipe it into your dashboard, your agent, or your edit.
Pricing
The per-second video readout, from $19.99
A viewer panel study runs five figures. Signal runs for pennies on the dollar.
$19.99 / month
Signal
- 30 scans / mo
- The complete per-second readout
- Dead-stretch and peak finder on every scan
- API + MCP access included
- Transcript and claims included
Recommended
$49.99 / month
Agents
- 50 scans / mo, priority queue
- Everything in Signal
- The autonomous agent that proposes the cut and re-scans it
- Playbooks learned from your own videos
- Scheduled scans and nightly reports
- Cancel anytime. No lock-in.
- Free while the beta runs
- Your scans stay private
Quick install
Add Signal to your coding agent
Connect Signal to any MCP-capable agent in one command.
$ npx -y @getsentinel/mcp
One command
Run it once — your agent gets scan, readout and library tools, plus a keyless demo to try first.
Claude CodeCodexCursorWindsurf
Works where you work
Claude Code, Codex, Cursor, Windsurf. Anything that speaks MCP.
SENTINEL_API_KEY=sk_sig_••••••••LiveYour key ships with the plan
Create an account and your API key is waiting on the account page.
No account needed to try it — add a key to scan your own.Read the API docs