Dropbox Sign API
The developer-friendly e-sign incumbent: public docs, OAuth, webhooks, SDKs, and free unlimited test mode. Production is the only gate, with published quota plans from $75 per month. No sales call, no review process.
Frequently asked questions
Dropbox Sign scores B+ on the API Report Card. The developer-friendly e-sign incumbent: public docs, OAuth, webhooks, SDKs, and free unlimited test mode. Production is the only gate, with published quota plans from $75 per month. No sales call, no review process.
Dropbox Sign has a workable official integration path. Most engineering teams can build against it directly. Solid API with minor gaps
Dropbox Sign (formerly HelloSign, acquired by Dropbox in 2019) is an e-signature platform with a developer-first API: signature requests, reusable templates, embedded signing and embedded templates, bulk send, and real-time webhook events.
Legal and operations document workflows: SaaS products embedding signatures, HR and onboarding tools, real estate and financial services teams, and SMBs using the web app directly. Engineering teams embed signing flows: create a signature request from a template or file, drop the signer into an embedded iframe or send email links, track status over webhooks, and download the signed document and audit trail.
A mainstream e-signature brand backed by Dropbox distribution, commonly shortlisted alongside DocuSign for embedded signing and generally considered the developer-friendly incumbent alternative. Far smaller than DocuSign in enterprise, strong in the embedded SaaS segment.
Signed agreements and their audit trails, signature request status, reusable templates, and signer identity records for every product embedding the API. For customers, the signed documents are the legally significant records.
Modern REST API with long-running stability: HelloSign launched the API in the early 2010s, and it has kept the same core request/template/embedded model since, now under Dropbox ownership.
Common alternatives include DocuSign, PandaDoc, Anvil, SignNow. Graded alternatives appear under "More from the report card" below.
Grades measure one thing: can a customer's engineering team get their own data out programmatically? We check six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and roll them into a letter grade. Grades get re-verified, and they only move on evidence.