“Being able to do this without asking anyone to download anything new is a huge plus, and we’re happy to be working with Sendblue to make this happen.”
Ankur Jain
Founder and CEO, Bilt
Ship with the API, MCP, CLI or Vercel Chat SDK.
>
Trusted by 4,000+ businesses
Copy a command. Test on the free sandbox.
You run a Chat SDK bot and want it in Messages.
npm install chat chat-adapter-sendblue @chat-adapter/state-memorySENDBLUE_API_KEY=your-api-key-id
SENDBLUE_API_SECRET=your-api-secret-key
SENDBLUE_FROM_NUMBER=+14155550100Adapter maintained by Sendblue.Your bot replies with typing and tapbacks.
Conversations
People text your agent's number. Your webhook gets the message. Your agent types, calls its tools and replies in the same thread.
Hundreds of AI agent companies join every month.
HIPAA. SOC 2 Type II. 99.99% uptime SLA.
Your agent shows typing while it works and sees read receipts.
Your agent can react and join group threads like a person.
Once they write back, your agent can send images and files.
Sign up free or run sendblue setup. Text your sandbox number once from your phone, then reply to that thread from the API or with sendblue send.

Use the Vercel Chat SDK adapter, the MCP server, the CLI or the API. On a dedicated line, messages reach your agent by webhook and replies go out in the same thread.
Production
LiveMove to dedicated lines with HIPAA, SOC 2 Type II and a 99.99% uptime SLA, plus a delivery status on every message your agent can act on.
Your GoHighLevel, HubSpot, Close or Salesforce workflows send blue bubbles. No A2P registration. 2-3x higher reply rates vs SMS.
“I've seen people reacting and responding double, even more, than I was getting with the green bubble in GoHighLevel.”
Real Apple hardware and real numbers. No A2P registration.
Dedicated lines: a number that belongs to your agent.
Delivery status webhook on every message.
HIPAA, SOC 2 Type II and a 99.99% uptime SLA.
DPA ready, with audit logs.
No shared infrastructure.
“Being able to do this without asking anyone to download anything new is a huge plus, and we’re happy to be working with Sendblue to make this happen.”
Ankur Jain
Founder and CEO, Bilt
People text your Sendblue number and your app gets a webhook. Your agent replies through the API in the same thread, from the same dedicated number. Typing indicators, tapbacks, read receipts and delivery callbacks are included.
Yes. Every account includes a free sandbox with full API access, rate limited. Your first contact texts your number once to verify, then your agent can message them. Upgrade to a dedicated line for production.
In Claude Code, run claude mcp add sendblue_api -- npx -y sendblue-api-mcp and set SENDBLUE_API_API_KEY and SENDBLUE_API_API_SECRET in the host's environment. In Cursor, Windsurf or VS Code, add the same npx -y sendblue-api-mcp command to the host's MCP config. The MCP server is free.
Yes. Install chat-adapter-sendblue alongside chat, point your Sendblue receive webhook at your app, and inbound iMessages arrive as Chat SDK messages. The adapter supports one to one messages, typing indicators, tapback reactions, delivery callbacks and message history. Sendblue maintains it.
Send blue. Get replies.
Free sandbox. No A2P registration.