Build with the tools you already use.

Five reusable end-to-end patterns for wiring an AI agent to real customer messaging.

After any AI phone call, send a text follow-up and handle the reply — platform-neutral.

After a Vapi call ends, send a follow-up text and handle the reply through the SendiMessage API and webhooks.

After a Retell AI call ends, send a follow-up text and handle the reply through the SendiMessage API and webhooks.

The reference request — copy, set your key, and send.

Official npm SDK — zero dependencies, full API coverage.

Official SDK with full TypeScript definitions included.

Official SDK on Node 18+, including the media upload flow.

Official PyPI SDK — pure standard library, no dependencies.

Official Composer SDK — needs only ext-curl and ext-json.

Official Go module — standard library only, context-aware.

Net::HTTP example, standard library only.

java.net.http.HttpClient example, JDK 11+.

HttpClient example for .NET 6+.

Scripted sends for cron jobs and ops tooling.

JVM HttpClient example — full guide in review.

URLSession example for server-side Swift — guide in review.

reqwest example — full guide in review.

package:http example for Dart backends — guide in review.

Req example for Elixir/Phoenix backends — guide in review.

clj-http example — guide in review.

sttp example — guide in review.

LWP::UserAgent example — guide in review.

Official PHP SDK in a queued job — clean, retryable sends.

Official SDK in a route handler — key stays on the server.

Browser-safe pattern: your UI calls your backend, never the API.

Official SDK: send route + verified webhook route in one app.

Official Python SDK service + webhook view for delivery events.

ActiveJob-friendly service + webhook controller.

RestClient service bean + webhook @PostMapping.

IHttpClientFactory + minimal API endpoints.

Browser-safe pattern via your own backend — guide in review.

server/api route keeps the key in Nitro — guide in review.

HttpClient to your own backend — guide in review.

Browser-safe pattern via your backend — guide in review.

+server.ts endpoint with $env/static/private — guide in review.

Action functions run server-side — guide in review.

API endpoints in SSR/hybrid mode — guide in review.

Injectable messaging service + webhook controller — guide in review.

Route pair for sends and webhooks — guide in review.

Middleware-style send + webhook routes — guide in review.

Official PHP SDK as a service — guide in review.

Official PHP SDK via Composer — guide in review.

wp_remote_post from hooks and plugins — guide in review.

Guzzle http_client service — guide in review.

Official Python SDK send + webhook route — guide in review.

Official Python SDK + webhook endpoint — guide in review.

Official Go module in handlers — guide in review.

Express-style Go routes — guide in review.

Handler-based send + webhook — guide in review.

Trigger messages from Flow or Apex and log events back through webhooks.

Trigger sends from Workflows or custom code actions; return replies via webhooks.

Fire sends from GHL Workflows via the Webhook action; return replies to a sub-account webhook.

Deluge functions call the API on workflow rules; replies return via webhooks.

Automations + webhooks connect deal events to messaging.

Power Automate flows bridge Dataverse events to messaging.

Workflow webhooks post deal and contact events to the API.

Board automations + webhook recipes trigger messages on item changes.

Automated actions in Python call the API server-side.

Business processes + outbound webhooks trigger API sends.

Workflow automation via webhooks — full guide in review.

Workflow triggers via webhooks — full guide in review.

AppConnect or webhooks bridge events — full guide in review.

SugarBPM + web logic hooks — full guide in review.

Open-source workflows + PHP logic hooks — full guide in review.

Process designer web services — full guide in review.

Middleware/iPaaS integration — full guide in review.

OIC integration flows — full guide in review.

SuiteScript scheduled/user event scripts — full guide in review.

Shopify webhooks feed order events into messaging.

Order-status hooks send directly from your WordPress server.

Observers or webhooks trigger sends on order milestones.

Order webhooks into your handler — full guide in review.

Module hooks on order status — full guide in review.

Event system + PHP cURL — full guide in review.

Flow Builder webhooks — full guide in review.

OCAPI/SCAPI hooks via middleware — full guide in review.

Velo backend events — full guide in review.

Order webhooks via middleware — full guide in review.

Triggers + webhook targets post ticket events to the API.

Workflows webhooks + your handler bridge conversations to messaging.

Automation webhooks post ticket events straight to the API.

HTTP integrations trigger sends from ticket events.

Workflows + webhooks via middleware — full guide in review.

Rules + API via middleware — full guide in review.

Workflows + hooks via middleware — full guide in review.

Workflow rules + Deluge — full guide in review.

Flow on Case objects — full guide in review.

Ticket workflows — full guide in review.

Webhooks by Zapier posts to the API from any trigger.

Incoming Webhooks post message events and replies into your channels.

The HTTP module calls the API inside visual scenarios.

HTTP Request node + Webhook node cover both directions.

The HTTP action bridges Microsoft 365 and Dynamics triggers to messaging.

HTTP connector in recipes — full guide in review.

Node.js code steps with env-stored keys — full guide in review.

HTTP Client connector — full guide in review.

Webhooks service for simple applets — full guide in review.

HttpOperator / Python tasks for pipeline alerts — full guide in review.

Every event is signed — verify the header before trusting it.

One signed delivery per event, with full API-side history to reconcile from.

JSON over HTTPS with key-pair auth — the foundation of every integration.

Managing projects and numbers as code is planned — not available yet.

Give your AI agent a real phone presence: send, receive, and continue conversations over iMessage and SMS.

One managed API between any CRM and SMS delivery.

CRM events delivered over iMessage where supported, SMS elsewhere.

Outbound messages and customer replies in one CRM-visible loop.

Wire order events from any commerce stack into messaging.

Connect scheduling systems to reminders that actually arrive.

Dispatch and logistics events become timely customer messages.

Helpdesk events out, customer replies back into the ticket.