Build a WhatsApp Customer Service Agent With OpenClaw

A WhatsApp number that answers customer questions 24/7 from your documentation — escalating to your team only when it cannot handle something.

Customer service is one of the highest-ROI OpenClaw deployments for small and medium businesses. The setup is simpler than most people expect, the quality of answers from a well-configured knowledge base is high, and the reduction in first-line support volume is immediate and measurable.

What the System Does

A WhatsApp number connected to OpenClaw receives customer messages. The agent searches your knowledge base (your documentation, FAQ, product information, policies) for relevant answers. If confidence is high, it answers directly and completely. If confidence is below your configured threshold, it sends you a Telegram or Slack notification with the customer's question and the context of the conversation, so you or your team can respond.

Over time, you review the questions that triggered escalation and update your documentation to cover them. The agent handles progressively more queries autonomously as the knowledge base improves.

Step 1: Prepare Your Knowledge Base

Gather all your customer support documentation: product guides, FAQs, return policies, pricing information, technical specifications, common troubleshooting steps. Convert everything to plain text or PDF format. The quality of your knowledge base determines the quality of your agent's answers.

Step 2: Install Required Skills and Connect WhatsApp

openclaw skills install whatsapp-bridge pdf-processor memory-logger
openclaw channels add whatsapp    # scan QR code in terminal

Step 3: Configure the Agent

Send your agent this setup message:

Read all files in ~/support-docs/ and use them as your knowledge base.
When customers message this WhatsApp number, answer their questions
accurately using only information from the documentation.
If you are not confident in an answer (below 85% certainty),
send me a Telegram notification with the customer's question and
your attempted answer, and tell the customer a specialist will follow up.

Step 4: Test Before Going Live

Send 20-30 test questions covering your most common customer queries. Review each answer for accuracy and completeness. Adjust your documentation where the agent struggled. Only connect the production WhatsApp number after you are satisfied with the answer quality on test questions.