Benjamin Bergen
Benjamin Bergen integrated Firma.dev's e-signature API in under 8 hours with AI-assisted development, offering it as a built-in feature at €0.029/envelope no margin impact.
When Per-Envelope Pricing Kills a Feature
Benjamin Bergen builds custom software for companies that need CRM systems, sales tools, and operational platforms. He has been programming for nearly 25 years and runs an independent consultancy where he delivers turnkey products to his clients.
His current project is a sales management system for a company in the agricultural sector. Field reps use it to manage leads, run demos, and close deals, sometimes while sitting across the table from a customer. The system needed e-signatures for sales agreements, both for in-person signing on mobile devices and for the traditional send-and-sign-via-email flow.
The problem was simple economics. Benjamin wanted to bundle e-signatures into a flat monthly fee for his client. At DocuSign's API pricing, where the cheapest developer plan starts at $600/year for 40 envelopes per month, the per-envelope cost would eat directly into his margin. For an independent developer shipping a turnkey product, that math doesn't work.
I would like to be able to offer basically a turnkey product to my customers where they're not getting a bill from DocuSign and a bill from Google and a bill from AWS. If it's a dollar per envelope, I don't really want to put a whole lot of e-signature stuff in there. That's all coming off of my bottom line. Whereas if it's a few cents, it doesn't matter.
— Benjamin Bergen, Independent Software Developer
Integrated in Under 8 Hours, with AI
Benjamin found Firma.dev and had the integration running in under eight hours. A significant part of that speed came from using Claude Code alongside Firma.dev's llms.txt, a machine-readable documentation file that gives AI coding assistants full context on the API without requiring the developer to manually read through every page.
The embedded signing editor was a key factor. Benjamin's client has sales reps who work in the field, visiting customers on-site. Instead of sending an email and waiting for a signature to come back, a rep can pull up the signing interface on their phone and get an agreement signed on the spot. The entire experience is white-labelled and integrated directly into the application.
I was using Claude Code extensively for this whole project. The way you guys have the LLM sheet where basically the LLM could pull a megabyte worth of text data of how it all works. It integrated that very well. I probably spent less than eight hours on the whole integration side of it.
— Benjamin Bergen, Independent Software Developer
Pennies Instead of Dollars
At €0.029 per envelope, Benjamin can absorb e-signature costs into his flat monthly fee without it registering as a line item. An estimated 500 envelopes per year costs him roughly $14.50 total. The equivalent DocuSign API plan would cost $600/year minimum, and that's before any overage fees.
More importantly, the pricing made e-signatures a feature he could actually ship. At DocuSign rates, the feature simply would not have existed in the product. Firma.dev turned it from a cost problem into a non-issue.
Benjamin has already started referring Firma.dev to other developers he has worked with, including a team where he had previously integrated DocuSign.
You've got a great business concept here. Getting embedded into other solutions, it's sort of like, I'm not going to want to go and change this six months from now to some other provider.
— Benjamin Bergen, Independent Software Developer
Comparison
DocuSign
Firma.dev
Annual cost floor
$600/year
Yes (€0.029/envelope)
Per envelope cost
~$1.25 (at plan floor)
€0.029
500 envelopes/year
$600+
~$14.50
Contract minimums
Annual commitment
None
Integration time
Weeks
Under 8 hours
Embedded signing editor
Additional complexity
Built-in
White-label
Enterprise tier
Included
AI-friendly docs (llms.txt)
Yes
Yes
