Firma.dev
White-labeled e-signature API for SaaS teams at €0.049 per envelope.
Tagline
Embed signing. Keep your UX.
The e-signature infrastructure layer for SaaS.
Cheaper than DocuSign. Built for white-label.
Add compliant signing without sending users away.
The e-signature infrastructure layer for SaaS apps.
The site repeatedly emphasizes API, webhooks, teams, templates, and embedding, which positions Firma.dev as infrastructure rather than a standalone signing app.
A cheaper, no-contract alternative to DocuSign for product teams that need to own the UX.
The pricing claim of €0.049 per envelope and the white-label/embedded flow are direct counters to the friction and cost of DocuSign, Adobe Acrobat Sign, and Dropbox Sign.
The fastest way to add compliant signing without sending users off-platform.
The core promise is a few lines of code, no redirects, and real-time notifications; this is a pain-killer for teams losing conversion in external signing flows.
Primary user
Founders or full-stack engineers at B2B SaaS companies embedding contracts or approvals into their product
ICP #1
Technical founder of an early-stage B2B SaaS with 3-20 employees
Pain
They need signing inside the product, but DocuSign-style pricing, contracts, and redirect-heavy flows destroy conversion and take too long to integrate.
Why this solves
Firma.dev is priced per envelope with no minimums and no contracts, and the page promises integration in minutes with a simple REST API and prebuilt UI.
ICP #2
Lead engineer at a startup building customer portals for onboarding, approvals, or legal workflows
Pain
They need granular workflow control, auditability, and event-driven status updates without building signing infrastructure from scratch.
Why this solves
The product exposes templates, teams, webhooks, event streams, audit trails, and completion certificates, which map directly to workflow-heavy SaaS requirements.
ICP #3
Founder of a bootstrapped SaaS or indie hacker shipping a paid workflow feature
Pain
They want to monetize e-signatures as a bundled feature, but existing providers are too expensive to resell and too opinionated to white-label.
Why this solves
Firma.dev explicitly says it is resell-ready, fully white-labeled, and built to be rebranded and bundled, while the low per-envelope cost protects margins.
Strengths
- +The price anchor is brutally clear: €0.049 per envelope, no contracts, no minimums.
- +The page is packed with developer-specific proof points: REST API, Swagger/OpenAPI docs, webhooks, sample apps, and framework compatibility.
- +The landing page does a good job of showing trust signals fast: SOC 2, GDPR, ISO 27001, eIDAS, G2, and Trustpilot ratings.
Weaknesses
- −It over-indexes on cheapness and under-explains why the product is safer or better than cheaper competitors beyond price.
- −The page repeats sections and logo rows, which makes it feel a bit assembled from blocks rather than a disciplined narrative.
- −There is too much generic feature inventory and not enough concrete end-to-end use cases like employee onboarding, loan agreements, or vendor contracts.
- −The messaging is heavily developer-centric, but it does not clearly separate technical buyer benefits from business buyer benefits.
- −The comparison page link exists, but the homepage doesn’t surface a sharp competitive wedge beyond cost.
Fix these
- Add 3-4 specific use cases above the fold, such as SaaS onboarding, legal-tech intake, contractor agreements, and customer approvals.
- Replace some feature lists with one tight architecture diagram showing how templates, webhooks, teams, and embedded signing fit together.
- Create a direct comparison block against DocuSign, Adobe Acrobat Sign, and Dropbox Sign focused on price, white-labeling, and integration speed.
- Add a concrete demo flow showing a user signing inside a customer portal, then a webhook updating the app state in real time.
- Segment the messaging into two paths: 'for developers' and 'for founders/resellers,' because those are distinct buying motives.
Drop-in replacement copy
Headline
Embed signing. Keep your UX.
White-labeled e-signature API with webhooks, embedded UI, and €0.049 envelopes.
Keep users inside your product
Embed the signing flow directly in your app instead of sending users to a separate tab. That keeps conversion higher and makes the experience feel native.
Ship workflow updates automatically
Use webhooks and real-time event streaming to move your app forward when a document is sent, viewed, signed, or completed. No polling scripts, no manual status checks.
Bundle signing under your own brand
White-label the UI, isolate workspaces, and resell signing as part of your SaaS. It looks and feels like your product, not a vendor handoff.
Stay ready for regulated workflows
Audit trails, completion certificates, identity checks, and compliance-friendly records are built in. It’s designed for contracts, approvals, and customer portals that need proof later.
FAQ
Can I embed the signing flow in my app?
Yes. Firma.dev supports embedded signing UI, so users can sign without leaving your product.
Do you support webhooks?
Yes. You can subscribe to signing events and update your app in real time when a document changes state.
Is this white-label?
Yes. It is designed for resale and branding inside your own SaaS, including embedded UI and team/workspace isolation.
What does pricing look like?
€0.049 per envelope with no contracts and no minimums. The goal is to make it viable for indie teams and bundled features.
Is it suitable for regulated workflows?
It includes audit trails, completion certificates, and compliance-focused positioning for GDPR, SOC 2, ISO 27001, eIDAS, ESIGN, and UETA use cases.
DocuSign is killing your conversion. Firma.dev lets you embed signing inside your app with a white-labeled API, webhooks, and UI components. €0.049 per envelope. No contracts. No minimums. Build the flow your users actually stay in.
Most signing tools break product flow. Redirect out. Wait. Come back later. That’s fine for procurement. It’s awful for SaaS onboarding, approvals, and customer portals. Firma.dev keeps signing inside your app.
Here’s the entire signing flow: 1. Create envelope via API 2. Send signer a link or embed the UI 3. Watch status update via webhook 4. Store audit trail + certificate No external branding. No redirect circus.
Built an e-signature API because I didn’t want to integrate another bloated SaaS. Wanted: white-label, webhooks, templates, teams, audit trails, no minimums. So we shipped Firma.dev at €0.049 per envelope. Now I want to see who else needs this.
SaaS teams want signing inside their product. Not a separate app. Not another tab. Not a branded detour. That’s why white-label + embedded signing is the wedge. If you’re shipping onboarding, approvals, or contracts, this matters.
Signing inside your app now costs €0.049 per envelope. Firma.dev gives you REST API, embedded UI, webhooks, templates, and completion certificates. Built for founders who want to resell signing without getting wrecked on margins.
Your users should not leave your app to sign a PDF. Every redirect costs trust, conversion, and support tickets. Embed the signing flow, keep the branding, and get real-time status back into your product.
One webhook updates your app. Signer completes document -> event fires -> your UI updates -> next step unlocks. That’s the whole point of infrastructure. Signatures should be a workflow event, not a dead end.
Price first. Everything else next. €0.049 per envelope with no contracts was the easiest part to explain. The harder part is making sure product teams can actually ship signing fast, white-label it, and trust the audit trail.
If you build SaaS portals, you already know the pattern: contracts, approvals, onboarding, legal intake, vendor forms. These are not edge cases. They’re core workflows. Firma.dev is the signing layer for that.
Angle: developer-first infrastructure
Most e-signature products are built for procurement teams. That is not who I built Firma.dev for. I built it for the engineer who needs signing inside a SaaS product without turning the user experience into a redirect maze. If you’re shipping: - onboarding flows - contract approvals - customer portals - legal intake - internal workflows then signing is infrastructure, not a separate app. Firma.dev gives you a REST API, webhooks, embedded signing UI, templates, audit trails, and completion certificates. The goal is simple: keep the user in your product, keep the brand yours, and keep the workflow event-driven. We also priced it to be usable for indie teams and early SaaS: €0.049 per envelope, no contracts, no minimums. I think this category has been bloated for too long. If your product needs signing, you should be able to ship it quickly and resell it cleanly. If you’re building this kind of workflow, I’d love to hear what integration shape you need most: embedded UI, webhooks, or template management.
Angle: white-label resale and margins
A lot of SaaS founders want to add e-signatures as a paid feature. The problem is not the API. The problem is the business model. If the provider is expensive, opinionated, or hard to white-label, your margins get crushed before the feature even ships. That was the gap Firma.dev is meant to fill. It’s a white-labeled e-signature API built for resale. That means custom branding, embedded signing, workspace isolation, templates, and workflow-friendly events - without forcing your users into someone else’s product. The pricing matters here too. €0.049 per envelope changes the math for bundled features, usage-based plans, and low-touch workflows. You can actually make signing part of your product instead of a partner dependency. If you’re a founder who has thought, “we should add signing, but it has to be cheap enough to bundle,” that’s the exact ICP I’m interested in.
Angle: business outcome and trust
The best feature of an e-signature product is not signing. It’s everything that happens after signing. Did the contract complete? Did the user consent? Can your app move the workflow forward automatically? Can you prove what happened later? That’s why we built Firma.dev with webhooks, real-time event streaming, audit trails, and completion certificates. The app can stay in sync with the signing state, and your team gets the records they need for regulated workflows. The other big issue is trust. If signing happens off-platform, your product loses control of UX and sometimes conversion. If it’s white-labeled and embedded, it feels like part of your system instead of a handoff. I’m curious how many teams are still paying for a separate signing tool when what they really need is just the signing layer inside their own product. If that’s you, I’d be happy to compare notes on the workflow you’re trying to ship.
Tagline
White-label e-signature API for SaaS
Description
Embed compliant signing in your app with a white-labeled API, webhooks, and embedded UI. €0.049 per envelope, no contracts, no minimums.
Maker's first comment
We built Firma.dev because too many product teams are still forcing users out of the app just to sign a document. If you’re shipping onboarding, approvals, contracts, or customer portals, that redirect breaks the flow and usually hurts conversion. I wanted the opposite: signing that feels like a native part of the product, not a rented detour. So we focused on the boring stuff that matters: a REST API, embedded UI, templates, webhooks, audit trails, completion certificates, and white-label branding. And we made the pricing simple enough that founders can actually bundle it without doing a finance exercise first. I’d love feedback from builders on two things: what’s missing for real production use, and where the integration experience still feels too heavy. If you’ve ever tried to ship signing inside a SaaS app, I want to hear what hurt most.
Pinned maker comment
Would love feedback on the integration flow, white-label depth, and what would stop you from using this in production.
Meta
SaaS users hate signing redirects
Hypothesis: founders building onboarding, approvals, or customer portals will convert better when signing stays inside their app. Firma.dev is a white-labeled e-signature API with embedded UI, webhooks, templates, and audit trails. €0.049 per envelope. No contracts.
Google Search
white labeled e signature api
Target: technical founders and engineers searching for an embeddable signing layer for SaaS. Test: they want compliant signing inside their product, not a standalone app. Firma.dev offers REST API, embedded UI, webhooks, and white-label branding at €0.049 per envelope.
Reddit Promoted
Built a signing flow? Stop using redirects.
Target: indie SaaS founders and builders shipping contracts, approvals, or portal workflows. Assumption test: if the signing step lives inside your app, users complete it faster and your product feels more native. Firma.dev gives you a white-labeled signing API, embedded UI, and webhooks.
Subreddits
r/SideProject
Show the build, pricing, and why you replaced a clunky signing flow with an embedded one
Rules: No pure promo; share what you built, why, and what you learned. Keep it concrete and humble.
r/indiehackers
Post a build log on adding a white-label e-signature layer to a SaaS and the pricing experiment
Rules: Value-first posts do better than launches. Be transparent with numbers and lessons.
r/microsaas
Explain how small SaaS products can bundle signing as a paid feature without wrecking margins
Rules: Share tactics and founder lessons; avoid drive-by links without context.
r/EntrepreneurRideAlong
Tell the story of shipping a developer infrastructure product and finding the first customers
Rules: Must be a real journey post, not a sales post. People want process and results.
r/webdev
Technical post about embedded UI, webhook-driven state changes, and API design for signing workflows
Rules: No spam, no low-effort promotion. Lead with implementation details and invite critique.
Communities
Publish one candid build log and comment on adjacent SaaS workflow threads before mentioning the product.
Launch with a technical angle: embedded workflow infrastructure, pricing, or a concise demo. No marketing language.
Engage founders talking about billing, SaaS add-ons, and monetization; mention bundle economics, not features.
Lobbing in relevant founder Slack groups
Join niche SaaS and product-builder Slack groups you already have access to, then answer workflow and integration questions before sharing the product.
Cold outreach template
{firstName}, saw {context} and thought of Firma.dev because it embeds signing directly inside SaaS apps. If you’re still sending users to a separate e-sign flow, I can show you the white-label API in 5 minutes. Want the docs or a quick demo?
Product Hunt timing
Launch on Tuesday at 12:01am PT, so you ride the full US workday and still catch EU mornings. This ICP is technical founders and engineers, and they browse PH during work hours, not late night.
Indie Hackers post ideas
- 01How I priced a white-label e-signature API at €0.049 per envelope
- 02Replacing DocuSign-style redirects with embedded signing inside a SaaS app
- 03What we learned building audit trails, templates, and webhooks for regulated workflows
Competitor alternatives
Current tone of voice
Punchy, developer-first, and aggressively price-led, with lines like "Cheapest e-signature API" and "I'm a geek. I don't have to speak to anyone."
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