DocuSeal

Open-source document signing with a REST API, webhooks, SDKs in seven languages, a CLI and an MCP endpoint.

AdaptableOperable Business appWeb app Deterministic RubyJavaScript API License: AGPL-3.0 with Section 7(b) additional terms

PDF form builder, multi-signer submissions, automatic e-signatures and verification, self-hosted from one Docker image with SQLite by default. The Builder documents the API at docuseal.com/docs/api, ships SDKs and a CLI on the docusealco org, and runs an MCP server at mcp.docuseal.com. Pro features (white-label, reminders, SMS, conditional fields, HTML template API, embedded forms) are closed.

Use it when

I want clients to sign onboarding forms from our own domain and our agent to send them from a template
I need signing inside a client's portal and will pay Pro for the embedded builder

Gotchas

AGPL with Section 7(b) additional terms: read LICENSE_ADDITIONAL_TERMS before rebranding
White-label, reminders, roles, SSO, conditional fields and embedded forms are Pro (closed)
Free edition sends invitation emails only over your own SMTP
mcp.docuseal.com refuses plain GET; tool list not verified

Last activity Aug 31, 2026. Fit: adaptable 2, operable 3.

Editions

Self-hosted · Free open source

Clonegit clone https://github.com/docusealco/docuseal
ImageContainer
DeployDeploy

Cloud · Free closed source

HostedOpen the hosted app

Pro · Free closed source

HostedOpen the hosted app

For agents: JSON · Markdown

Adaptable: what is yours to change

Make it yours

Config only7 things to edit

Run the Docker image; set DATABASE_URL to move off SQLite and HOST for the Compose stack, which issues TLS through Caddy. SMTP, storage (disk, S3, Google, Azure), branding and languages are set in the app's settings. Rails config lives in config/ (database.yml, storage.yml, sidekiq.yml). Pro features are closed, so white-label and reminders are not a fork away.

Env vars: DATABASE_URL HOST SECRET_KEY_BASE
Config files: docker-compose.yml config/database.yml config/storage.yml config/sidekiq.yml
Prompt files: none
Accounts you need: SMTP providercloud storage (optional)DocuSeal account (Pro or cloud)

Source

github.com/docusealco/docuseal
AGPL-3.0 with Section 7(b) additional terms license
Last commit Aug 31, 2026
18,417 stars

Operable: what an agent can drive

Interface

OfficialAPIpublished by the builderremote or local

How an agent can drive an Operable Listing, in five levels: native (built for the agent as the primary interface), official (the Builder ships an agent interface), wrapped (a third party wraps the software's API), config (an agent can only drive it by editing files), gui (screen control only). An interface is official only when it is published by the same organization that ships the software. GUI-level Listings are allowed and sorted last.

Docs: www.docuseal.com/docs/api

Reach

Partial coverage. 4 of 8 jobs reachable through the stated interface.

Job	Through the interface	Evidence
Create templates from PDF, DOCX or HTML	Reachable	API Templates: create from PDF/DOCX/HTML, clone, merge, update, archive; HTML and field-tag APIs are Pro
Send a document for filling and signing	Reachable	API Submissions: create from template or file, list, retrieve, archive
Pre-fill fields and track each signer	Reachable	API Submitters: list, retrieve, update with field values
Get events (viewed, completed, declined)	Reachable	Webhooks: form, submission and template events
Bulk send from a spreadsheet	Undetermined	Bulk send is a Pro UI feature; API equivalent is a loop of submissions
Embed the signing form or builder in your app	Not reachable	Embedded forms are front-end SDKs (React, Vue, Angular, JS), Pro only
Manage users and roles	Undetermined	Not on the API page; roles are Pro
Verify a signed PDF	Undetermined	Verification is a product feature; API endpoint not confirmed

Code stack

Languages: RubyJavaScript
Frameworks: Ruby on RailsVue.jsSidekiqShakapacker
Package manager: bundler + yarn
Database: SQLite (default)PostgreSQLMySQL
Hosting target: DockerDocker Compose with CaddyHerokuRailwayDigitalOceanRender
Built: Human-written (recorded, never ranked)

Evidence and confidence

Field	Where it was seen	Confidence
formFactor	README: web tool, single Docker image	95%
executionModel	No model in README or config/	85%
operability	docuseal.com/docs/api: X-Auth-Token API, webhooks, SDKs (JS, Python, Ruby, PHP, Java, C#, Go), CLI; mcp.docuseal.com on the Builder's domain; docusealco org has docuseal-cli, docuseal-python, docuseal-ruby, docuseal-php	90%
effort	README Docker section names DATABASE_URL and HOST; config/ has 23 Rails files	80%
editions	README Features vs Pro Features; docuseal.com/pricing	70%
active	GitHub pushedAt 2026-08-31	–
reach		80%

Open questions

Pro and cloud prices
Tools exposed by mcp.docuseal.com and whether it works with self-hosted instances
Full list of supported env vars beyond DATABASE_URL, HOST and SECRET_KEY_BASE

Sources

github.com/docusealco/docuseal sourcing:smb-ops-crm:github
www.docuseal.com/docs/api sourcing:smb-ops-crm:github