Blog da API Oficial do WhatsApp
Guias técnicos sobre a Cloud API da Meta: integração, webhooks, templates, custos e boas práticas para quem desenvolve.
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WhatsApp coexistence: what syncs and what doesn’t
With coexistence, contacts, up to 6 months of chat history and messages sent from the app reach the API. Groups, calls and broadcast lists stay out.
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Per-user marketing limits: why your WhatsApp message was not delivered
Error 131049 means Meta held back a marketing template because of the per-user limit. Learn what counts, when to resend and how to reduce these failures.
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WhatsApp Business API phone number quality rating: green, yellow and red
What the green, yellow and red quality ratings mean for your WhatsApp Business API number, how they affect limits and templates, and how to recover.
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WhatsApp OTP: sending verification codes with authentication templates
A guide to WhatsApp Business API authentication templates for OTP: button types, creation, sending, expiration, security and what each code costs.
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WhatsApp template rejected: common reasons and how to fix them
The reasons Meta uses to reject WhatsApp Business API templates, how to read the reason in the webhook, fix the text and appeal within 24 hours.
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Marketing, utility or authentication: how Meta categorizes your WhatsApp template
How Meta assigns a category to a WhatsApp Business API template, why utility becomes marketing, how to request a review and how much the category affects cost.
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How to test the WhatsApp webhook locally with ngrok
Step by step to receive WhatsApp Business API webhooks on localhost with ngrok or cloudflared, answer hub.challenge and validate the X-Hub-Signature-256 header.
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Permanent WhatsApp Business API access token with a system user
Step by step: create a Meta system user, generate the WhatsApp Business API access token, pick the expiry and rotate it without breaking your integration.
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WhatsApp API errors: the most common codes and how to fix them
What the most common WhatsApp Business API error codes mean (131047, 131026, 131049, 131056, 132xxx) and what to do about each one.
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Typebot with the official WhatsApp Business API: how to set it up
How to publish a Typebot on WhatsApp through Meta’s official API, what changes compared to the web bot, button and block limits, and how to integrate via the chat API.