AISignFlow

E-Signature API & Integration For Businesses And Developers

AI SignFlow – E-Signature API For Your Software

Build It Or Let Us Integrate It

Add document and PDF signing to the software your business already uses. Integrate the AI SignFlow e-signature API yourself — or have the AI SignFlow / iCommuneTech development team integrate it for you.

Talk To An Integration Expert View Pricing For Your API

API access is included in Developer, Business, and Enterprise plans. Custom integration is quoted separately.

Two ways to add e-signatures to your software

Both paths start with the same API-enabled plan. The only difference is who does the integration work.

1 Both paths: choose an applicable API plan

For developers

Build With AI SignFlow

Select an applicable API plan, then integrate the API into your software with your own team.

  1. 1. Choose an API plan
  2. 2. Create an API key and register webhooks
  3. 3. Build against the documented REST API

You pay: your plan

Read the API docs →

For businesses

Let Our Developers Integrate It For You

Select an applicable API plan, then request development assistance from the AI SignFlow / iCommuneTech team.

  1. 1. Choose an API plan
  2. 2. Share your requirements and receive a quote
  3. 3. We build, test, and launch the integration

You pay: your plan + quoted integration

Request a quote →

Advantages Of E-Signature API Integration For Businesses

What changes when document signing lives inside your own software instead of a separate tool.

Without integration

Your software → Export PDF → Separate signing tool → Re-upload

With the AI SignFlow API

Your software → Signed → Back in your records

Integrate signing into existing workflows

Trigger a signing request from the moment a record is ready — a new hire, a closed deal, a booked load — instead of exporting a PDF and starting a separate process.

Reduce manual document handling

Send envelopes from reusable templates with pre-filled values, so nobody re-types names, amounts, or dates into a document by hand.

Automate signing processes

Webhooks tell your system when a document is viewed, completed, declined, or expired, so the next step can run automatically.

Keep users inside existing software

Your team sends and tracks documents from the screens they already use, rather than switching to another tool and another login.

Connect signing with business systems

Tag each envelope with your own reference ID and download the signed PDF and audit certificate straight back into your records.

Create customized workflows

Control recipients, routing order, reminders, and expiration per request — or let our developers build the workflow around your exact process.

What you can do with the AI SignFlow API

A versioned REST API (/api/v1) covering the full signing lifecycle — from template to signed PDF.

API Access

A versioned REST API authenticated with organization API keys you create, revoke, and manage yourself.

Authorization: Bearer sf_live_…

Signing Workflows

Create and send envelopes, send reminders, adjust reminder settings, extend expiration, or cancel a request.

POST /api/v1/envelopes

Document Handling

Upload PDFs to templates, then download the completed, signed document once every recipient has finished.

GET /envelopes/{id}/download

Recipients

Add, update, remove, and reorder recipients, with routing order and optional access codes per signer.

PUT /envelopes/{id}/recipients/reorder

Templates

Manage templates, fields, recipient roles, and versions, and pre-fill field values when you send.

GET /api/v1/templates

Status Tracking

Retrieve any envelope and its recipients to see where a request stands at any point.

GET /api/v1/envelopes/{id}

Webhooks

HMAC-signed event notifications, with a delivery log, manual retry, and secret rotation.

X-AISignFlow-Signature

Embedded Signing

Token-based signing endpoints let you present the document, fill fields, capture the signature, and complete signing inside your own interface.

POST /signing/{token}/complete

Bulk Send

Create, start, pause, resume, and retry bulk-send batches, with a per-batch error report.

POST /api/v1/bulk-send/batches

Audit Trail & Verification

Pull an envelope’s audit log and Certificate of Completion, and verify a signed document’s hash.

GET /audit-logs/envelopes/{id}/certificate

Plus organization, team, and member management, merge-tag previews, and health checks.

Every endpoint, request field, and response is documented in the interactive API reference.

Explore the API documentation →

Custom integration

How Custom Integration Works

Want e-signatures inside your software without building it yourself? Our development team integrates the AI SignFlow API for you — from the first requirements call to launch.

  1. 1

    Choose API Plan

    Pick the Developer, Business, or Enterprise plan that fits your volume and team.

  2. 2

    Share Requirements

    Tell us about your software, platform, and the signing workflow you need.

  3. 3

    Discuss Integration

    Our developers review the brief with you and confirm scope and approach.

  4. 4

    Receive Quote

    You get a clear quote for the integration work, separate from your plan.

  5. 5

    Development & Integration

    We build the AI SignFlow API integration into your existing software.

  6. 6

    Testing

    We test the full signing flow end-to-end with you before go-live.

  7. 7

    Launch

    Your team starts sending and signing from inside your own software.

Pricing note: integration is a separately quoted development service. It's added to your applicable API plan — not a replacement for it.

Get A Custom Integration Estimate

Tell us about your software and what you need — we'll come back with an integration plan and quote.

About you
Your integration

We only use your details to respond to this request.

Success story

How AI Trans brought e-signatures into its existing software

AI Trans runs its own logistics, carrier, and fuel management software. Instead of moving document signing to a separate tool, the AI SignFlow API was integrated directly into that software — so e-signatures became part of the ecosystem the team already works in.

AI Trans

AI Trans Existing Software

  • Logistics
  • Carrier
  • Fuel management
AI SignFlow

AI SignFlow API Integration

  • REST API
  • Webhooks
  • Templates

Integrated E-Signature Workflow

  • Send
  • Sign
  • Track

“AI SignFlow made it possible to bring e-signatures directly into our existing logistics and fuel management software without disrupting the workflows our team already relied on. The integration gave us a much simpler way to manage document signing within the systems we use every day.”

J. Carter General Manager, A&I Fuel Finder

E-signature API use cases

The API fits wherever your software creates documents that need a signature.

Built for small businesses

Small Businesses

You don't need an enterprise budget or an in-house engineering team to add e-signatures to your software. Start on the $29/month Developer plan, and if you'd rather not build the integration yourself, our developers can connect it to the tools you already run.

  • API access from $29/month
  • Webhooks included
  • Keep your existing software
  • Optional done-for-you integration

SaaS Companies

Add document signing as a feature inside your product, triggered by your own app logic.

Businesses

Send agreements from the internal tools your teams already use every day.

HR Platforms

Send offer letters and onboarding forms automatically when a candidate is hired.

CRM/ERP Systems

Send contracts from a deal or order record and store the signed copy back on it.

Agencies

Build signing into client projects — or have our team integrate it for you.

Legal Software

Route engagement letters through a set signing order with a full audit trail.

Real Estate Software

Send leases, disclosures, and offers to every party from your listing platform.

Custom Applications

Connect any in-house application to AI SignFlow through the REST API and webhooks.

API pricing

API access and webhooks are included in these three plans — there is no separate API subscription. Custom integration is quoted separately.

Developer

$29 /month

Annual Billed monthly

Buy Now

Billed monthly, cancel anytime.
Additional tax may apply.

  • 150 envelopes/mo
  • 3 users
  • 19 GB storage
  • API access (included)
  • Webhooks (included)
  • SMS notifications (not included)
  • AI Suggested Fields (not included)
  • AI Support Chatbot (not included)
Buy Developer Plan

Most popular

Business

$49 /month

Annual Billed monthly

Buy Now

Billed monthly, cancel anytime.
Additional tax may apply.

  • 500 envelopes/mo
  • 25 users
  • 93 GB storage
  • API access (included)
  • Webhooks (included)
  • SMS notifications (not included)
  • AI Suggested Fields (not included)
  • AI Support Chatbot (not included)
Buy Business Plan

Enterprise

$199 /month

Annual Billed monthly

Buy Now

Billed monthly, cancel anytime.
Additional tax may apply.

  • Unlimited envelopes
  • Unlimited users
  • Unlimited storage
  • API access (included)
  • Webhooks (included)
  • SMS notifications (included)
  • AI Suggested Fields (included)
  • AI Support Chatbot (included)
Buy Enterprise Plan

Need help integrating after you buy? Request a custom integration estimate →

Why AI SignFlow API

Affordable API-enabled plans

API access starts on the Developer plan at $29/month — no separate API subscription to buy.

API + webhooks

Every API-enabled plan includes both the REST API and signed webhooks, so you can send and react to events.

Existing e-signature platform

The API runs on the same AI SignFlow platform your team can use in the browser — templates, routing, and audit trail included.

Custom integration option

Prefer not to build it yourself? Our development team can integrate it for you as a quoted service.

Integrate, don’t replace

Bring e-signatures into the software you already run instead of moving your team to a new system.

Frequently asked questions

Yes. AI SignFlow provides a versioned REST API for sending documents for signature, managing recipients and templates, tracking status, and receiving webhook events. See the API documentation for every endpoint.

API access is included in the Developer ($29/month), Business ($49/month), and Enterprise ($199/month) plans. There is no separate API product or API-only pricing.

Buy an API-enabled plan, then create an API key from your organization settings. Send it as a Bearer token on each request. Keys can be revoked at any time.

Yes. Webhooks are included on every API-enabled plan. Deliveries are HMAC-signed so you can verify they came from AI SignFlow, and you can view the delivery log, retry a delivery, and rotate your signing secret.

Choose an API plan, share your requirements through the form on this page, discuss the integration with our team, and receive a quote. After approval we handle development and integration, test the signing flow with you, and launch.

Custom integration is a separately quoted development service from AI SignFlow / iCommuneTech. The cost depends on your software, the workflow you need, and the scope of work — share your requirements and we will send an estimate.

Yes. Both paths start with an applicable API plan. You can then integrate it yourself or request development assistance from our team; the integration work is quoted in addition to your plan.

Any workflow where your software needs documents signed — for example SaaS products, HR onboarding, CRM/ERP contracts, agency client work, legal engagement letters, real estate documents, and custom in-house applications.

It depends on your software and workflow. Developers integrating themselves can work straight from the API documentation. For assisted integrations, we agree a timeline with you when we scope the work and send your quote.

Envelope volume follows your plan: 150 envelopes/month on Developer, 500 envelopes/month on Business, and unlimited on Enterprise. If you need something different, choose “Custom Plan” in the integration form.

If you have a development team comfortable with REST APIs and webhooks, you can build it yourself using the documentation. If you would rather not use internal resources — or need CRM/ERP integration or a custom signing workflow — our developers can integrate it for you.

Add e-signatures to your software today

Pick your API plan and start building — or let our developers integrate it for you.

Buy Developer Plan $29/month · API + webhooks Buy Business Plan $49/month · API + webhooks Buy Enterprise Plan $199/month · API + webhooks
Request Custom Integration →