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Firma.dev
White-label e-signature API at €0.049 per envelope with no minimums, contracts or per-seat fees
Visit Firma.dev
https://firma.dev
About Firma.dev
Firma.dev is an electronic-signature API aimed squarely at developers who want signing inside their own product rather than a redirect to a third-party portal. The commercial argument is a single number: €0.049 per envelope, with no monthly minimum, no per-seat fee and no contract, against the €5-per-envelope and €10–30 monthly minimums the vendor attributes to incumbent providers. Credits are bought as needed rather than subscribed to, and the pricing page carries a volume slider that shows the arithmetic at 50, 500, 5,000 and 50,000 documents per month. Integration is a REST API in any language, with Swagger and OpenAPI documentation, pre-built UI components, webhook events and sample applications, and the whole signing experience is white-labelled so end users never see the vendor's brand. Compliance is the other half of the pitch: ESIGN, UETA and eIDAS conformance with audit trails and certificates of completion, alongside SOC 2, ISO 27001, GDPR and configurable data residency. It is explicitly built to be resold — unlimited teams are included and the vendor positions rebranding and bundling as a revenue line for the integrator. Prices are listed in euros but billed in more than thirty local currencies with no conversion markup, and testing with real documents is free.
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