Give your customers someone to text.

Keiki lets you build an AI agent your customers can text on WhatsApp, iMessage, SMS, Slack, Telegram, and email. Say what it should do, bring your business, and it's live the same day.

Say what it does

Describe the job in plain words, or start from your website or a template. Keiki writes the instructions, tone, and limits for you, and you can change any of it.

Bring your business

Add your docs, policies, and website so it answers like someone who works there. Plug in your API or MCP server, connect the apps you already use, or build the actions it needs right in Keiki.

Let people text

The same agent answers on every channel with the same memory and rules. Businesses use it to help their customers, run events, keep a founder's day on track, and take care of a team's group chat.

You stay in charge

Read every conversation, see each step it took, approve sensitive actions, and step in yourself whenever a person should take over.

For developers

Already built an agent? Bring it. Keiki has an API, an OpenAPI spec, an MCP server, and AgentKit docs, with scoped API keys for your team.

• Developer portal and quickstart
• OpenAPI specification
• Agent API documentation
• Agent-readable product instructions
• About Keiki and Zero Email, Inc.
• Privacy policy
• Product, support, privacy, and security contact