
A1Base provides an API that equips AI agents with real-world communication capabilities, including phone numbers, email addresses, and trusted identities. This allows AI agents to engage in activities such as joining WhatsApp groups, sending and receiving emails, and interacting with other agents. The platform emphasizes easy integration with a simple API, verified identity with anti-spam protection, and support for multiple communication channels like WhatsApp, SMS, and Email. A1Base aims to enable AI-native companies by providing a foundation for AI agents to act as trusted allies and coworkers to humans, moving beyond traditional SaaS interfaces. Their pricing includes 'Core,' 'Pro,' and 'Enterprise' tiers for A1Base, and 'Free' and 'Paid' tiers for A1Mail, catering to different usage needs.

A1Base provides an API that equips AI agents with real-world communication capabilities, including phone numbers, email addresses, and trusted identities. This allows AI agents to engage in activities such as joining WhatsApp groups, sending and receiving emails, and interacting with other agents. The platform emphasizes easy integration with a simple API, verified identity with anti-spam protection, and support for multiple communication channels like WhatsApp, SMS, and Email. A1Base aims to enable AI-native companies by providing a foundation for AI agents to act as trusted allies and coworkers to humans, moving beyond traditional SaaS interfaces. Their pricing includes 'Core,' 'Pro,' and 'Enterprise' tiers for A1Base, and 'Free' and 'Paid' tiers for A1Mail, catering to different usage needs.
What they do: API that gives AI agents phone numbers, email, messaging integrations, and verified agent identities
Stage & funding: Pre-seed — $500K raised (Mar 12, 2025)
Backers: Y Combinator, Pioneer Fund
Headquarters: San Francisco, California
Agent communication, identity, and verification for AI-native applications
2025
AI developer tools / communications and identity
$500,000
Investors include Y Combinator and Pioneer Fund
“Backed by Y Combinator and Pioneer Fund”