Statflo APIs · v4

Build Statflo
into your stack.

APIs for compliant SMS & MMS, contacts, conversations, and campaigns — the engine that superpowers wireless operators.

API Documentation Explore Our Guides
Add a contact to a campaign 
# Add a subscriber to a campaign
      curl https://app.statflo.com/v4/api/campaign-member \
        -X POST \
        -H "Authorization: Bearer sk_live_..." \
        -H "Content-Type: application/json" \
        -d '{
          "accountId": "8842019",
          "accountName": "Jordan Blake",
          "phoneNumber": "+14155551234",
          "campaignId": 5031,
          "startDate": "2026-07-01T00:00:00Z",
          "endDate": "2026-08-01T00:00:00Z",
        }'

      # 200 OK
      {
        "id": 91742
      }
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Appointment booking Sendable
Widgets & sendables

Build custom UI, right inside the conversation.

Widgets are custom components that live in the side panel of the Conversation UI — pull up account details, offers, or any tool your team needs without ever leaving the thread.

  • Widgets render in the conversation side panel and can read live account context.
  • Sendables are widgets users attach to a message with the + button. For ex: appointment booking, quote builders, or product carousels.
  • Both are built with the same Widget SDK, styled to match your brand.
Download the Widget SDK
Widget Quickstart

Building UI in three steps

Expand your conversations with custom content and integrations.

01

Setup your widget

Get a working ReactJS widget running to build your integration.

Read more
02

Use the Playground

Test is in our Widget playground to see how it works and feels.

Try Playground
03

Register Widget

Get your widget active for your organization or share even with others.

Read more
Reference & guides

Browse the documentation

Everything you need to integrate, organized by area.

General

Open
Libraries

Official SDKs & Tools

Install a client for your language, or import the OpenAPI spec into the tool of your choice.

JS

Java SDK

npm i @statflo/node
PY

Python SDK

pip install statflo
PHP

PHP SDK

composer require statflo/sdk
{ }

API spec

https://developers.statflo.com/hc/en-us/p/api
PM

Postman collection

Run in Postman
Guides

Go deeper

Concept guides for the parts that matter most when you ship to production.

Authentication

API keys, bearer tokens, and rotating secrets safely.

Rate limits & quotas

How throttling works and how to back off gracefully.

Webhooks & events

Verify signatures and handle delivery + inbound events.

Pagination & filtering

Cursor-based paging and query filters for list endpoints.

Errors & retries

Status codes, error objects, and idempotent requests.

10DLC registration

Register brands & campaigns to send A2P at scale.

Ready to build?

Spin up a sandbox key in under a minute and send your first message today.

Get your API keys Submit a ticket

Widgets & sendables preview

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Widgets & Sendables Preview