What problem does it solve? Building WhatsApp integrations requires navigating Meta's Cloud API rules, the 24-hour messaging window, template approvals, webhook signature verification, and rate limits. This Skill encodes the complete Kapso platform playbook so an AI agent can send messages, onboard numbers, verify webhooks, and run workflows without re-deriving these constraints from documentation. ## Core Features & Use Cases - Messaging & Templates: Send text, media, interactive, and template messages via the @kapso/whatsapp-cloud-api SDK or the Meta-mirror REST API, with correct handling of the 24-hour window, template lifecycle, and business-scoped user IDs (BSUID). - Webhooks & Events: Register project or per-number webhooks, verify HMAC-SHA256 signatures on raw bodies, handle buffering/ordering/retries/auto-pause, and dedupe on X-Idempotency-Key. - Workflows, Functions & Agents: Build lock-versioned workflows with kapso pull/build/push, deploy Cloudflare-Worker functions, and wire agents through Project MCP, Docs MCP, the CLI, Chat SDK, OpenClaw, Hermes, or n8n. - Use Case: A SaaS platform needs to onboard customer WhatsApp numbers and send order notifications. The Skill guides creating customers and setup links, syncing approved templates, sending messages within rate limits, and auditing webhooks with the read-only triage scripts in tools/. ## Quick Start Ask the agent to send a WhatsApp template message through Kapso using the KAPSO_API_KEY environment variable and verify the webhook endpoint signature handling.