Integrate the Dropbox Sign API.Caddi writes and runs the integration for you.
Dropbox Sign has a REST API. Free self-serve test mode for any developer; production use requires a paid API plan (Essentials, Standard, or Premium).
- 99%of agent runs complete successfully
- ~45 minon average to build your first agent
- 1M+back-office tasks completed
The connection is a project before it does anything.
Before the first record moves: an app registration, credentials, token refresh, and somewhere to host and monitor the code. 100 requests per minute for standard endpoints, 25 per minute for higher-tier endpoints, and 10 per minute in test mode.
Register an app, store Dropbox Sign credentials, refresh tokens and code around the rate limits.
Connect your Dropbox Sign account once. Caddi holds the connection.
The job doesn't stop at Dropbox Sign.
An intake, a filing or a client update also runs through email, documents and the other systems your team works in. The Dropbox Sign API only reaches Dropbox Sign.
Each extra system is another API, another set of credentials, another integration to own.
One automation runs across every tool the job touches, each through its API.
Someone has to own the code.
API versions change, fields get added and your process moves.
A developer patches and redeploys the integration each time.
The person who does the work updates it by showing or describing the change. Every automation is reviewed before it runs in production, and every run is logged.
What the Dropbox Sign API gives you
- Type
- REST (JSON)
- Authentication
- API key (HTTP Basic) or OAuth 2.0
- Who can get access
- Free self-serve test mode for any developer; production use requires a paid API plan (Essentials, Standard, or Premium).
- What it covers
- Signature requests (including embedded and bulk send), templates, unclaimed drafts, accounts, teams, and files.
- Limits
- 100 requests per minute for standard endpoints, 25 per minute for higher-tier endpoints, and 10 per minute in test mode.
Official docs: developers.hellosign.com. Checked September 2026. Vendors change access terms, so confirm with Dropbox Sign before you build.
When to build the Dropbox Sign integration in-house
When you have engineers and the integration is your product, or you need one narrow sync between two systems and someone to own it. When the goal is getting Dropbox Sign work off someone's desk, the build is the slow part, and Caddi does it for you.
What teams usually want the Dropbox Sign API for
Envelope generation
Caddi pulls signer details from the CRM, populates the right template, and sends the Dropbox Sign envelope to the correct contacts.
Signed-doc filing
On signature, Caddi files the final PDF in Dropbox with the right metadata and updates the matching CRM record.
Reminder + chase
Caddi monitors outstanding envelopes and sends the firm's standard reminder to each signer on a cadence — logging touches in the CRM.
Everything Caddi does with Dropbox Sign.
Dropbox Sign API questions
Does Dropbox Sign have an API?
Yes. Dropbox Sign has a REST API, authenticated with API key (HTTP Basic) or OAuth 2.0. The official documentation is at https://developers.hellosign.com/.
How do I get access to the Dropbox Sign API?
Free self-serve test mode for any developer; production use requires a paid API plan (Essentials, Standard, or Premium).
Does the Dropbox Sign API have rate limits?
100 requests per minute for standard endpoints, 25 per minute for higher-tier endpoints, and 10 per minute in test mode.
Can I connect Dropbox Sign to my other tools without writing code against its API?
Yes. With Caddi you show the Dropbox Sign task once, the way you'd train a new hire, and Caddi builds it as verified code that runs across Dropbox Sign and the other tools the job touches. Steps that need a person's judgment are handed to Copilot or Claude, and Caddi monitors those too.
Do I need a developer to automate Dropbox Sign with Caddi?
No. There is no integration code for you to write or maintain. Every automation Caddi builds for Dropbox Sign is reviewed before it runs in production, and every run is logged.