Build any agreement,
just by describing it.
And test real workflows end-to-end — instantly. Publish & use it in your app or backend.
Trusted by engineering teams at
Build in minutes, not months
Author in Studio, the CLI, or your own AI — then test it end-to-end, publish, and use it in your app. The same pipeline, whichever way you work.
Author
Describe it in Studio, the CLI, or your own AI. Signstack generates the schemas, templates, and blueprint as YAML.
Preview & test
Render real PDFs and run the full signing flow end-to-end — locally or in Studio. Iterate until it’s right.
Publish & use
Deploy in one command or one click — then call it from your backend via API, or embed it in your app.
Every step produces version-controlled YAML you own — editable, diffable, and ready for CI.
Your agreements, in your repo
Your agreements are declarative YAML you own, diffed in PRs and shipped in CI. It starts with your data model: the documents, participants, and signing flow all derive from it. Bring your own PDFs or HTML.
$ npm i -g @signstack/cli Get the CLI on npm Built it in Studio? signstack pull brings it into your repo — or push from your repo and find it in Studio.
More than an API. It's a complete engine.
Built on powerful, unopinionated primitives — JSON Schema, JSONata, and a recursive step tree. You define every rule. We execute it.
Version-controlled
Every schema, template, and workflow is a YAML file in your repo. Review changes in PRs, roll back with git, deploy through your existing CI/CD pipeline. No more dashboard drift.
Complex orchestration
A recursive step tree gives you full control — sequential, parallel, quorum, conditional. Every gate and routing decision is a JSONata expression over your data.
Legally compliant
ESIGN & UETA compliant e-signatures with complete audit trails, tamper-evidence, consent capture, and detailed event logging for full legal defensibility.
AI-native
Describe a workflow in plain English. Get working YAML. Declarative definitions mean AI generates the entire workflow — schemas, templates, orchestration — not just integration code.
Start free. Scale when you ship.
Plans differ only by live workflows and support — everything else is included on every plan.
Free
Everything you need to build, test, and ship your first workflows.
Pro
For teams taking agreements to production.
Enterprise
Custom volume and dedicated support for large teams.
Questions, answered
Everything you need to know about building on Signstack. Can't find it here? Our team is one message away.
You can get a lot done without one. Non-technical users can describe a workflow in plain English, let AI generate the YAML, and run one-off workflows — triggering and tracking agreements from Studio. Wiring Signstack into your backend or embedding the signing flow in your app is where a developer (or AI) comes in. The deepest value is still developer-first: workflows are version-controlled YAML in Git, shipped through your own CI/CD.
Ready to build the future of agreements?
Stop wrestling with rigid, document-centric platforms. Ship the intelligent, data-driven agreement workflows your users deserve.