Firma.dev - E-signatures API for your app averaging ~3¢ per envelope
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At €0.029 per envelope (about 3¢), Firma.dev runs about 99% cheaper than DocuSign, where one envelope can cost $4-5. Pay-as-you-go, no minimums, no contracts. Built developer-first for startups and SaaS teams who'd rather integrate signing in an afternoon than sit through a sales cycle: clean REST API, embeddable template and signing editors, integration in hours. Test everything free with a sandbox key, real docs and unlimited usage, before you pay a cent. Get an API key and start building.
Replies
Firma.dev
Hey Product Hunt, Derick here, co-founder of Firma.dev.
We built Firma.dev because every e-signature API we tried was either priced for enterprises or was an end-user app with an API bolted on as an afterthought. We wanted the opposite: an API-first product where signing is something you integrate in an afternoon, not a procurement cycle.
💸 Pricing. €0.029 per envelope, about 3¢, pay-as-you-go with no minimums or contracts. DocuSign can run $4-5 for a single envelope, so for most teams that's around 99% less.
🛠️ Who it's for. If your product touches contracts, you need this: HR and onboarding tools sending offer letters, property platforms handling leases, freelance marketplaces with client agreements, healthtech collecting consent forms, fintech onboarding flows, or any SaaS sending NDAs and proposals. At 3¢ per envelope you can make signing a built-in feature instead of a cost center.
⚡ Developer-first. Clean REST API, embeddable template and signing editors, and you can give each of your own customers an isolated workspace with separate templates and usage.
🤖 Built for AI-assisted development. We ship two MCP servers, one for our docs and one for the API itself with 84 tools, so coding agents generate accurate Firma.dev integration code and can even manage signing requests directly. We have a guide for Claude Code, plus Antigravity, Cursor, Lovable and the rest in our docs.
🌍 Legality. Designed to support the frameworks that matter, and e-signatures are legally recognized in 55+ countries.
🔑 Try it free. There's a sandbox key with real documents and unlimited usage, so you can test the whole flow before paying anything. No demos, no sales calls.
We'd love your feedback, especially from anyone who's fought with e-signature integrations before. I'll be around all day to answer questions.
Derick
Happy Friday hunters. 😎
Contral
@derickd Man it's crazy how cheap this is. Can i get a mail where i can contact you can talk more about the business side of things? Would love to talk.
Firma.dev
@samagra_gune Hi Samagra! Yes of course .. I have full visiblity into support@firma.dev .. theyll tag me if I dont see it myself, just ask for me :)
Our goal is to make e-signatures available to everyone.
@samagra_gune @derickd good things
Stripo.email
Congrats on the launch! The API-first approach and pay-as-you-go pricing make a lot of sense for modern SaaS products.
Firma.dev
Awshar AI
The pricing is compelling, but pricing alone rarely wins enterprise deals. What feature or capability do customers cite most often when choosing Firma.dev over DocuSign besides cost?
Firma.dev
@ankit_narang1 GREAT question yes obviuosly cost is very compelling, but outside that, we find our top customer needs are, in this order:
Legality in your country .. this is binary, you either are or you arent. E.g. we're not legal in China, but we are in 55+ other countries including EU, LATAM, US, and a lot of APAC.
API capability (usually this translates to white label) .. this is an area where we really shine. We built what we always wanted and I think it shows.. we're proud of it.
Wow, the 84-tool MCP server is the interesting part. Pricing an e-sign API at 3¢ basically makes it cheap enough for an agent to fire envelopes on its own, which is great right up until an agent fires one it shouldnt. Whats the guardrail there, can you scope what an agent is allowed to send per workspace? Overall, well done!
Firma.dev
@artstavenka1 Hi Art. Yup, you sure can. One of our key differentiors at Firma.dev is that we have workspaces (like, at all). Docusign has the capability in its highest tier enterprise plan$.
We created Firma.dev and workspaces because at our previous startup, we wanted to offer e-sign for free to our customers (we never could before), and do it in a secure way.
So the guardrail for the MCP ... itll ask you what workspace you want to engage with, and you have to "manually" switch workspaces. So if you're working with a particular set of customers, one customer, or a team, it works. Its like this: Use workspace Sales Team and send out the Customer Agreement to Derick at support@firma.dev
... make sense?
We're seeing a growing amount of our customers (especially on the real SMB side) using agentic workflows like that.
Alconost Localization
We're also launching today, but I couldn't help but leave this comment - kudos for the really good, appealing video! It's warm, has no fancy polish (which is a good thing I mean), and explains the benefits in an easily digesteable way :) we've done several launches, some of them with videos, and I always pay attention to what videos product makers do. This one is among great examples!
PS: Sending the link to our finance guy! ;)
Firma.dev
@margarita_s88 Thanks Margarita! We started doing customer testimonials and mini case studies and prioritizing "realness" over quality lol so they look a little homemade but at least you can tell they are real customers! Good luck on the launch Alconost looks useful Im passing this to our team as well.
Alconost Localization
@derickd this is a great solution to let your customers speak! This video was so laid-back and friendly, first I didn't even realize the dev guy is not one of the product makers :D he felt really comfortable and explained why he liked the product clearly. And thanks very much for your support and kind words! I've actually got some feedback from our team, can I send you a message on Linkedin to continue the conversation?
Firma.dev
@margarita_s88 Please do! https://www.linkedin.com/in/derick-dorner/
Alconost Localization
@derickd I did, waiting for you to accept :)
Really interesting work! How did you handle documentation?
Firma.dev
@nimmy_fanimi Hi Nimmy! Thanks. Documentation is our core product.. since all we make is an API, we have to stay on top of that. We have a stand up meeting every single morning about how to better improve our API docs ... one of the questions we ask each other is "whats 1 thing you can fix today, even if its small, you have to improve something". So that's it .. its like exercise .. just gotta do it every day, even if you don't wanna.
The pricing is the obvious hook, but the sandbox key is what would make me try it. E-signature APIs always feel painful until you actually test the full flow. Curious how you handle audit trails and signer verification?
Firma.dev
@farrukh_butt1 Thanks Farrukh. We're devs, and had the pain point first hand of having TERRIBLE APIs with the existing e-sign providers, so we built it how we would want. The thing about e-sign is, there's a lot of little laws you need to follow and be aware of .. audit trails are part of that. We have fully legal, compliant audit trails (just like Docusign) in 55+ countries. Okay fine if you need documents in China, use Docusign and pay $5 an envelope. But ours are totallly compliant and you can even configure them via the API / GUI.
Firma.dev
Lunch & PH launch. 2 in the afternoon here in Barcelona lets see if we can keep going through evening US time 😅
jared.so
Great to see this live! Which use case are you seeing the most demand for?
Firma.dev
@borrellbr Hi Ignacio! Thanks for your comment.
Pretty evenly split among 3 groups.
SMB - midcap that are creating mini apps for their own internal workflows. Mostly migrating from purely manual workflows b/c other solutions are too expensive.
Established/VC backed SaaSs - Migrating from Docusign, DocuXXXX, (all the docu's) because we offer a fully white labeled product finally thats doesn't kill your budget
Startups - People building little apps that need a quick cheap way for their users to sign docs and theres no way that they're gonna get on the phone with Docusign.
Is this API-only? We use PandaDoc, but not through the API—we use it as regular users to manually sign documents with clients and partners. Do you have a B2C/self-service option as well? If so, how much does it cost?
Firma.dev
@natalia_iankovych Hi Natalia! Great question. We probably aren't the best fit for you, unless you're retooling some of your workflows, e.g. building internal mini apps, or have software using an API. We do have a full powered GUI (that we're proud of) .. but white labeling via API for super cheap volume senders will always be our focus. 98% of our users send via API, 2% GUI.
We also play really well with things like N8N, Salesforce, etc. Our "self service" option is mostly used by people that connect our MCP server right into their Claude/ChatGPT .. but honestly thats pretty case dependent, you know?
However, if you find yourself thinking about processes in your org, and e-sign is part of that, hit us up.
Firma.dev
@natalia_iankovych Just to clarify .. I mean if youve got 50 sales people each with a docusign sub.. then yah its worth figuring out how to build us in.. but we're not designed to be a 1:1 replacement for Docusign end users.. just their API.