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WhatsApp Business (Cloud API)

WhatsApp Business (Cloud API)

Developer20 minutes3 questions2026-08-09
The idea in one minute

Start with meaning, then move to detail.

This lesson explains WhatsApp Business (Cloud API) as part of Hermes internals and extension points. You will learn what it does, when it matters, and the smallest safe test that proves it works.

If you are new

If you are new, do not memorize names. Focus on three questions: what problem does this solve, what access does it need, and how can you verify the result?

For hands-on use

For practice, inspect the first example, identify its effects, run it on test data, and compare the result with the source claim.

For specialists

For advanced readers, inspect Quick start, Prerequisites, Creating the Meta app, then verify failure modes and version compatibility.

What do you need first?

Know Python, Git, and basic project structure before changing code.

What will you know?

A clear outcome before you read.

  • Understand WhatsApp Business (Cloud API) without assumed prior knowledge.
  • Separate the source description from what still needs testing in your environment.
  • Read the first command and identify its inputs and outputs before copying it.
Official page description

Set up Hermes Agent as a WhatsApp bot via Meta's official Business Cloud API

Topic map

What does the source say, and in what order?

  1. 01
    Quick start

    Start here to understand the core idea or structure.

  2. 02
    Prerequisites

    Read this after the foundation, then connect it to the previous step.

  3. 03
    Creating the Meta app

    Read this after the foundation, then connect it to the previous step.

  4. 04
    Permanent token (production)

    Read this after the foundation, then connect it to the previous step.

  5. 05
    Exposing Hermes to the internet

    Read this after the foundation, then connect it to the previous step.

  6. 06
    Cloudflare Tunnel (recommended)

    Read this after the foundation, then connect it to the previous step.

  7. 07
    ngrok

    Read this after the foundation, then connect it to the previous step.

  8. 08
    Your own domain + reverse proxy

    Read this after the foundation, then connect it to the previous step.

  9. 09
    Configuring the webhook on Meta's side

    Read this after the foundation, then connect it to the previous step.

  10. 10
    Recipient whitelist (Meta-side)

    Finish here to verify the result and special cases.

Examples from the official page

Copy only after you understand the effect.

hermes whatsapp-cloud
# Windows winget install Cloudflare.cloudflared # macOS brew install cloudflared # Linux # Download the binary from https://github.com/cloudflare/cloudflared/releases
cloudflared tunnel --url http://localhost:8090
Try it now

Read the first command and identify its inputs and outputs before copying it.

Match every command to your installed Hermes version, review the files and accounts it can reach, and use non-sensitive data for the first test. If this explanation differs from the source, the official source wins.

Knowledge check

Three decisions before completion.

1. What is the source of truth when “WhatsApp Business (Cloud API)” changes?
2. What is the best way to apply this lesson?
3. What should happen before a step can modify files or an external account?