WHAPI.cloud WhatsApp API — Agent Skill

Practical guide for AI agents building WhatsApp integrations via WHAPI.cloud. Contains rules across 7 categories, prioritized to prevent the most frequent mistakes and cover the most-used API features.

Prerequisites — MCP Setup Check

Before starting any task, verify that the whapi-mcp MCP server is available:

1. Attempt to call the checkHealth tool.
2. If it responds successfully — proceed.
3. If the tool is not found — the MCP server is not installed. Guide the user through installation: references/core-mcp-setup.md.
4. If the tool returns 404 ("Channel not found") — the token is invalid or the channel does not exist. Guide the user: references/core-mcp-setup.md section "Token is Missing or Invalid".
5. If the tool responds, check status.text in the response: