Will the Zoho Sign API-Only plan work for my use case?

I am already using Zoho CRM Enterprise edition and now would like to integrate Zoho Sign. From my research, it looks like the API is what I'm looking for, but then on the Zoho Sign API Pricing page, this threw me off a little:

What if I want to use Zoho Sign with its built-in interface and also use APIs for integration?
You can use Zoho Sign with its built-in interface across the web and mobile platforms even with an API-only license. However, you will continue to be charged on the basis of usage, even for the documents sent for signatures using the interface. Alternatively, you can pay a flat price and subscribe to our Enterprise Edition, and purchase API credits as add-ons based on your API usage needs. This way, you will be able to access Zoho Sign from our web and mobile apps, as well as API.

I have the following needs:

Re-usable templates, so I can send out the same documents consistently.
Document fields, where I can pre-fill the document with things like name, address, and other fields from their CRM record.
Multiple signers
Sign multiple files per single document
Webhooks, so I can trigger automation when a document is signed (or otherwise).

I have no need for individual CRM users to do anything manually; all of this should be driven off of automation. I've been using Zoho CRM for a bit now and am perfectly comfortable with Deluge making calls using Zoho connectors, which is what I understand will be needed.

Given the above, will I be able to create the templates I need in Zoho Sign, then send the data over from Zoho CRM to populate and ultimately dispatch the document for signatures, all with the API-only plan? Or will I need a paid seat also for the admin side of things?

Thank you in advance.

Zoho Desk Resources

Desk Community Learning Series
Digest
Functions
Meetups
Kbase
Resources
Glossary
Desk Marketplace
MVP Corner
Word of the Day

Topic Participants
brian
Rajkiran RV

Sticky Posts
Free webinar: E-signature legality in Latin America
Saludos! Are you wondering if e-signatures are legally valid to use for your business documents in Latin America? We've got your answers! Join us on Thursday, November 21 for an exclusive webinar, where we'll dive into the legality of electronic signatures
Free webinar: Processing transactional paperwork with ease using Zoho Sign and Zoho Finance apps
Hello everyone, Did you know you can securely send, sign, and manage your financial documents directly within Zoho Finance applications? Zoho Sign seamlessly integrates with Zoho Books, Zoho Invoice, Zoho Inventory, Zoho Checkout, Zoho Billing, and Zoho
Zoho Sign: Product updates - Mid - 2024
Hello, everyone! We've crossed the halfway point in 2024, and here's what Zoho Sign has been up to lately. We've been part of several Zoho User Groups, and we've started creating video content for our developers. Along with this, we have once again been
Explore the legality of electronic signatures worldwide with Zoho Sign
Hello, everyone! We are pleased to announce our new initiative exploring the legality of electronic signatures around the globe in detail. As more businesses go digital, understanding the legal requirements for e-signatures across different jurisdictions