AI-native automation
Automate work across
eFax and 
Harveywith Caddi AI Agents.
Automate anything you do across eFax, Harvey, 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 eFax and Harvey
Connect eFax to Caddi
Allow1Sign in to eFax
One click with your own eFax login. No API keys.
Connect Harvey to Caddi
Allow2Sign in to Harvey
The same click again. Both tools are connected.
Redline document in Harvey when fax received in eFax.
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 eFax and Harvey together
In a law firm the work between eFax and Harvey is organized by matter: the right client, the right matter, the right people on it. Caddi carries that context through every step, so nothing is filed against the wrong case.
- 01
Redline document in Harvey when fax received in eFax.
Caddi watches eFax for fax received and redline document in Harvey. No copy-paste, no missed records.
- 02
Send fax in eFax when document ready in Harvey.
Caddi watches Harvey for document ready and send fax in eFax so the two systems stay in lockstep.
- 03
Summarize document in Harvey from eFax events.
When fax delivered happens in eFax, Caddi summarize document in Harvey with the right context attached.
Actions Caddi can take across eFax and Harvey
- eFax
Fax received
Triggers when an inbound fax arrives.
- eFax
Fax delivered
Triggers when an outbound fax is delivered.
- eFax
Fax failed
Triggers when an outbound fax fails to send.
- eFax
Send fax
Send a document to a fax number.
- eFax
Download fax
Fetch the image and details of a received fax.
- eFax
Search faxes
Find sent or received faxes by date or number.
- Harvey
Document ready
Triggers when a document is queued for Harvey to process.
- Harvey
Review requested
Triggers when a redline or review is requested on a draft.
- Harvey
Analysis complete
Triggers when Harvey finishes a summary, redline, or extraction.
- Harvey
Redline document
Send a draft to Harvey for AI redlining and markup.
- Harvey
Summarize document
Generate a summary of a document or document set.
- Harvey
Extract clauses
Pull key clauses, terms, or issues from a document.
- Harvey
Answer question
Run a research or document question against Harvey.
Common questions
How does Caddi connect eFax and Harvey?
eFax and Harvey 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 eFax and Harvey 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 eFax and Harvey to other tools too?
Yes. Most Caddi loops span 3–6 tools. Once the first eFax + Harvey 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.
Does this work for law firms?
Yes. Caddi runs eFax and Harvey with the matter as the unit of work, so documents, time, and communications land against the right client and matter rather than in a general folder. Firms most often start with intake, document filing, or billing prep.
Ready to automate eFax and Harvey?
Drop your work email and we'll show you Caddi running end-to-end against eFax, Harvey, and the rest of your stack.
Or skip the demo: sign up free and build it yourself.