https://whasp.ai/blog Guides and field notes on putting AI agents and companions on WhatsApp: numbers, bans, Meta rules, webhooks and scale. en https://whasp.ai/blog/put-ai-agent-on-whatsapp https://whasp.ai/blog/put-ai-agent-on-whatsapp Tue, 20 Oct 2026 00:00:00 GMT Comparisons Four ways to put an AI agent on WhatsApp in 2026, compared on setup, cost, Meta's AI rule and ban risk, with a decision guide by use case and agent type. https://whasp.ai/blog/whatsapp-ai-chatbot-ban-2026 https://whasp.ai/blog/whatsapp-ai-chatbot-ban-2026 Tue, 20 Oct 2026 00:00:00 GMT Rules and bans Since 15 January 2026 Meta bars general-purpose AI assistants from WhatsApp's Business API. The rule, who left, what Italy and the EU did, and what is still open. https://whasp.ai/blog/whatsapp-ai-agent-openai https://whasp.ai/blog/whatsapp-ai-agent-openai Tue, 20 Oct 2026 00:00:00 GMT Guides Connect OpenAI to WhatsApp in TypeScript: verify the signed webhook, keep the chat history, call the Responses API and reply with one API call. Full code, Node 22. https://whasp.ai/blog/why-whatsapp-bans-numbers https://whasp.ai/blog/why-whatsapp-bans-numbers Tue, 20 Oct 2026 00:00:00 GMT Rules and bans WhatsApp bans numbers for spam-like behavior: cold messages, bursts, automation, unofficial apps and reports. What its own rules say and how AI agents stay online. https://whasp.ai/blog/ai-companion-on-whatsapp https://whasp.ai/blog/ai-companion-on-whatsapp Tue, 20 Oct 2026 00:00:00 GMT Companions A step by step plan to launch an AI companion on WhatsApp: the number, persona, onboarding link, memory, safety rules, retention without cold messages, cost. https://whasp.ai/blog/whatsapp-business-api-vs-personal-number https://whasp.ai/blog/whatsapp-business-api-vs-personal-number Tue, 20 Oct 2026 00:00:00 GMT Comparisons WhatsApp Business API vs a personal number for an AI agent, side by side: AI policy, templates, the 24-hour window, pricing, limits, groups and ban risk. https://whasp.ai/blog/n8n-whatsapp-ai-agent https://whasp.ai/blog/n8n-whatsapp-ai-agent Tue, 20 Oct 2026 00:00:00 GMT Guides Build an n8n WhatsApp AI agent that holds up in production: signed webhook, instant 200, duplicate protection, AI Agent node with memory, retried replies, handoff. https://whasp.ai/blog/whatsapp-api-pricing-2026 https://whasp.ai/blog/whatsapp-api-pricing-2026 Tue, 20 Oct 2026 00:00:00 GMT Comparisons WhatsApp API pricing in 2026 for AI agents: Meta's per-message rates by country, provider markups, and a worked 1,000-user example with the model bill. https://whasp.ai/blog/chatgpt-on-whatsapp-after-ban https://whasp.ai/blog/chatgpt-on-whatsapp-after-ban Tue, 20 Oct 2026 00:00:00 GMT Rules and bans ChatGPT, Copilot and Perplexity left WhatsApp on 15 January 2026. Only ChatGPT is back, in the EEA since 13 July 2026. The dates, the EU order and what it means. https://whasp.ai/blog/whatsapp-ai-agent-claude https://whasp.ai/blog/whatsapp-ai-agent-claude Tue, 20 Oct 2026 00:00:00 GMT Guides Build a Claude WhatsApp bot in Python with FastAPI: verify the webhook, give Claude a tool, cache the system prompt and send the reply. Full code for Sonnet 5.5. https://whasp.ai/blog/unofficial-whatsapp-api-comparison https://whasp.ai/blog/unofficial-whatsapp-api-comparison Tue, 20 Oct 2026 00:00:00 GMT Comparisons Baileys, whatsapp-web.js, WAHA, Evolution API, Whapi.Cloud and Green-API compared: license, how they connect, the June 2026 passkey change and who carries the ban. https://whasp.ai/blog/whatsapp-mcp-server https://whasp.ai/blog/whatsapp-mcp-server Tue, 20 Oct 2026 00:00:00 GMT Guides A WhatsApp MCP server lets Claude or ChatGPT read and send messages as tools. The open-source options, the risk to your own account, and a TypeScript build. https://whasp.ai/blog/openclaw-whatsapp https://whasp.ai/blog/openclaw-whatsapp Tue, 20 Oct 2026 00:00:00 GMT Guides OpenClaw's WhatsApp channel links your account through Baileys. See why a second number is advised, how to get one, and how to bridge a managed number over HTTP. https://whasp.ai/blog/is-my-ai-bot-allowed-whatsapp-business-api https://whasp.ai/blog/is-my-ai-bot-allowed-whatsapp-business-api Tue, 20 Oct 2026 00:00:00 GMT Rules and bans Under Meta's 2026 terms a support bot is fine and a general-purpose assistant is not. A test with examples, the gray areas, and what happens if Meta rules you out. https://whasp.ai/blog/whatsapp-number-banned-what-to-do https://whasp.ai/blog/whatsapp-number-banned-what-to-do Tue, 20 Oct 2026 00:00:00 GMT Rules and bans Number banned and it runs a bot? Tell a restriction from a ban, request WhatsApp's in-app review, reach your users another way and avoid a repeat. No unban tricks. https://whasp.ai/blog/ai-companion-safety-rules-2026 https://whasp.ai/blog/ai-companion-safety-rules-2026 Tue, 20 Oct 2026 00:00:00 GMT Companions California SB 243, New York's companion law, the EU AI Act and the FTC study, with dates and sources, turned into a checklist for AI companion builders. https://whasp.ai/blog/whatsapp-webhook-handling https://whasp.ai/blog/whatsapp-webhook-handling Tue, 20 Oct 2026 00:00:00 GMT Engineering How to handle WhatsApp webhooks for an AI agent: verify the Standard Webhooks signature, answer within 10 seconds, survive retries and dedupe events. TypeScript. https://whasp.ai/blog/whatsapp-ai-agent-memory https://whasp.ai/blog/whatsapp-ai-agent-memory Tue, 20 Oct 2026 00:00:00 GMT Engineering whasp's servers keep no messages, so your agent's memory is yours to build: a SQLite schema, a recent-turns window, rolling summaries and long-term facts, in TypeScript. https://whasp.ai/blog/write-for-whatsapp-ai-agent-prompts https://whasp.ai/blog/write-for-whatsapp-ai-agent-prompts Tue, 20 Oct 2026 00:00:00 GMT Guides Prompt rules, WhatsApp's own formatting syntax and TypeScript code that turns a model's Markdown into short, ordered messages that read like a person texting. https://whasp.ai/blog/whatsapp-voice-notes-ai-agent https://whasp.ai/blog/whatsapp-voice-notes-ai-agent Tue, 20 Oct 2026 00:00:00 GMT Guides How a WhatsApp AI agent reads voice notes, photos and files: download the 24-hour link, convert and transcribe with gpt-transcribe, caption images, in TypeScript. https://whasp.ai/blog/whatsapp-onboarding-wa-me-links https://whasp.ai/blog/whatsapp-onboarding-wa-me-links Tue, 20 Oct 2026 00:00:00 GMT Guides How to build a WhatsApp wa.me link with a prefilled message, turn it into a QR code, and tell which user wrote in, with working TypeScript and the whasp API. https://whasp.ai/blog/scale-whatsapp-ai-agent-multiple-numbers https://whasp.ai/blog/scale-whatsapp-ai-agent-multiple-numbers Tue, 20 Oct 2026 00:00:00 GMT Engineering Work out how many WhatsApp numbers an AI agent needs: the limits per number, a three-part formula, worked examples with costs, routing and Business API tiers. https://whasp.ai/blog/warm-up-whatsapp-number https://whasp.ai/blog/warm-up-whatsapp-number Tue, 20 Oct 2026 00:00:00 GMT Guides WhatsApp publishes no warm-up schedule. What its own paper implies, what vendors and builders try, what fails, and a ramp for an agent whose users write first. https://whasp.ai/blog/whatsapp-463-error-reachout-timelock https://whasp.ai/blog/whatsapp-463-error-reachout-timelock Tue, 20 Oct 2026 00:00:00 GMT Rules and bans WhatsApp error 463 means the account is under a reachout timelock that blocks messages to new contacts. What WhatsApp confirms, what developers found, what helps. https://whasp.ai/blog/whatsapp-vs-telegram-vs-imessage-ai-agents https://whasp.ai/blog/whatsapp-vs-telegram-vs-imessage-ai-agents Tue, 20 Oct 2026 00:00:00 GMT Comparisons WhatsApp, Telegram or iMessage for an AI agent? Users, country splits, bot rules, costs and limits compared with 2026 sources, and a verdict by audience. https://whasp.ai/blog/why-ai-companions-move-to-whatsapp https://whasp.ai/blog/why-ai-companions-move-to-whatsapp Tue, 20 Oct 2026 00:00:00 GMT Companions AI companions are moving to WhatsApp for reach and retention: 3 billion monthly users, app retention data, Luzia's path, and what Meta's 2026 rule changed. https://whasp.ai/blog/ai-agent-use-cases-whatsapp https://whasp.ai/blog/ai-agent-use-cases-whatsapp Tue, 20 Oct 2026 00:00:00 GMT Companions Twelve AI agents that fit WhatsApp, each with a short example chat and the one thing to get right. Every one starts with the user, so none needs cold outreach. https://whasp.ai/blog/whatsapp-chatbot-vs-ai-agent https://whasp.ai/blog/whatsapp-chatbot-vs-ai-agent Tue, 20 Oct 2026 00:00:00 GMT Comparisons A WhatsApp chatbot follows scripted menus and rules; an AI agent reasons, calls tools and remembers. The differences, what each needs, and how Meta's rules apply. https://whasp.ai/blog/whatsapp-number-replaced-migrate-users https://whasp.ai/blog/whatsapp-number-replaced-migrate-users Tue, 20 Oct 2026 00:00:00 GMT Engineering WhatsApp banned your agent's number: chats do not move and the new number cannot write first. A playbook with webhook code to move users and restore history. https://whasp.ai/blog/whatsapp-opt-out-consent-ai-agents https://whasp.ai/blog/whatsapp-opt-out-consent-ai-agents Tue, 20 Oct 2026 00:00:00 GMT Rules and bans How to handle STOP, consent and AI disclosure for a WhatsApp AI agent: GDPR, the EU AI Act, Brazil's LGPD, WhatsApp's policies and the CNIL's 2026 note.