AI-native automation
Automate work across
Dropbox Sign and 
Trellowith Caddi AI Agents.
Automate anything you do across Dropbox Sign, Trello, and the rest of your tools. Sign in, show or tell Caddi what you want, and it runs end to end. No workflow builder.
How to connect Dropbox Sign and Trello
Connect Dropbox Sign to Caddi
Allow1Sign in to Dropbox Sign
One click with your own Dropbox Sign login. No API keys.
Connect Trello to Caddi
Allow2Sign in to Trello
The same click again. Both tools are connected.
Create card in Trello when signature request completed in Dropbox Sign.
ScreenshareType it3Show or tell it
Screenshare the job, or type it in chat. Change it any time.
- Running
14 done1 for review
4Watch it run
Caddi does the work and flags anything unsure for review.
What Caddi is and how it works
An AI teammate that runs your back-office loops.
- Doesn't break. Caddi reads intent, so when fields move or UIs change, your loop keeps running.
- Taught like a new hire. Walk Caddi through the work once. Tweak it later by chat, with no workflow builder to re-architect.
SOC 2 attested · Human-in-the-loop · Full audit trail · 150+ tools across legal, finance, and operations
Practical ways to use Dropbox Sign and Trello together
- 01
Create card in Trello when signature request completed in Dropbox Sign.
Caddi watches Dropbox Sign for signature request completed and create card in Trello. No copy-paste, no missed records.
- 02
Send signature request in Dropbox Sign when new card in Trello.
Caddi watches Trello for new card and send signature request in Dropbox Sign so the two systems stay in lockstep.
- 03
Move card in Trello from Dropbox Sign events.
When signature request sent happens in Dropbox Sign, Caddi move card in Trello with the right context attached.
Actions Caddi can take across Dropbox Sign and Trello
- Dropbox Sign
Signature request completed
Triggers when all signers complete a request.
- Dropbox Sign
Signature request sent
Triggers when a request is sent for signature.
- Dropbox Sign
Signer declined
Triggers when a signer declines a request.
- Dropbox Sign
Send signature request
Send a document or template for e-signature.
- Dropbox Sign
Use template
Send a request built from a reusable template.
- Dropbox Sign
Download signed PDF
Pull the executed PDF and audit trail.
- Dropbox Sign
Send reminder
Nudge signers who haven't completed.
- Trello
New card
Triggers when a new card is added to a list.
- Trello
Card moved
Triggers when a card is moved to a different list.
- Trello
Card archived
Triggers when a card is archived.
- Trello
Create card
Add a new card to a list with description and members.
- Trello
Move card
Move a card between lists or boards.
- Trello
Add comment
Post a comment on a card.
- Trello
Add attachment
Attach a file or URL to a card.
Common questions
How does Caddi connect Dropbox Sign and Trello?
Dropbox Sign and Trello just run together. You teach Caddi the way you'd teach a new hire: walk it through how you use them today, with no workflow builder to wire up. Caddi turns that walkthrough into a verified loop and runs it against Dropbox Sign and Trello end-to-end.
Do I need engineering help?
No. Whoever does the work today walks Caddi through it on a call, the same way they'd train a new hire. Caddi builds the loop. No code, no IT ticket.
Is my data safe?
Yes. Caddi is SOC 2 attested. The AI watches and builds the automation, and once the loop ships it runs as deterministic code, repeatable and logged, with any model step scoped and reviewable.
Can Caddi connect Dropbox Sign and Trello to other tools too?
Yes. Most Caddi loops span 3–6 tools. Once the first Dropbox Sign + Trello loop is live, Caddi suggests other tools and other workflows to fold in.
How fast can it go live?
Typical first loops ship within a week of that first walkthrough. The Caddi team reviews every loop before it runs in production.
Ready to automate Dropbox Sign and Trello?
Drop your work email and we'll show you Caddi running end-to-end against Dropbox Sign, Trello, and the rest of your stack.
Or skip the demo: sign up free and build it yourself.