Send messages
Send text, media, templates, interactive messages, and WhatsApp Flows through the official API surface.
WhatsApp API for developers
Kapso gives developers the API, webhooks, Workflows, CLI, MCP, templates, and inbox tooling needed to build on WhatsApp without rebuilding the WhatsApp operating layer.
The WhatsApp layer around your product
The API call is one part. Production WhatsApp products also need events, templates, logs, workflows, and human ownership.
Receive replies
Use webhooks for inbound messages, delivery events, read receipts, failures, and conversation events.
Automate with Workflows
Start from WhatsApp messages, call tools, wait for replies, branch, and hand off to humans.
Operate with CLI and MCP
Use REST APIs, CLI, and Kapso WhatsApp MCP depending on the development surface.
Keep humans in control
Route sensitive, uncertain, or high-value conversations into inbox ownership.
Watch the system
Track messages, webhook delivery, workflow runs, templates, conversations, and ownership.
A simple send and receive loop
Start with one connected number. Add automation only after the event loop is visible.
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1
Connect a number
Create a project and connect a WhatsApp Business number.
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2
Send with the API
Use the phone number ID and a project API key.
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3
Receive events
Subscribe to replies, statuses, failures, and conversation changes.
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4
Route the next action
Send events to Workflows, agents, CRMs, or the inbox.
Choose the right surface
Kapso exposes the same WhatsApp foundation through different interfaces.
API
Backend systems that need direct WhatsApp send, template, media, and conversation operations.
Webhooks
Applications that need inbound replies, delivery status, failures, and workflow events in real time.
Workflows
Teams that want WhatsApp triggers, AI decisions, tools, waits, branches, and handoff in one builder.
CLI and MCP
Developers and AI agents that should inspect or operate Kapso from shell or MCP clients.
Build on WhatsApp without rebuilding WhatsApp
Use Kapso for the API, webhooks, templates, workflows, CLI, MCP, and human operations around WhatsApp.