Free start: 40 messages after phone verification, no card required. Monthly plan: $8 USD per month for 500 messages. One-time packs: $5 for 200 messages, $10 for 500 messages, $20 for 1,300 messages, $40 for 2,800 messages. Credits never expire.
Key features
Integrates with Slack, Linear, and GitHub
Runs on your own devices using your existing Claude and Codex subscriptions
Shared skills that teams can publish and install
Recurring schedules for progress updates and routine checks
Shared memory across company and channels
Access control for devices, skills, memory, and schedules
Proactive responses to surface missing context
Two-way SMS messaging with AI agents
Grok Bot webhook wake from incoming SMS
Support for Grok Bot, Codex, Claude Code, and compatible MCP hosts
Local agent connector
Hosted MCP support
No phone app required
Agent updates and notifications by SMS
Message credits that never expire
What makes it different
Runs on your own machines with no separate model billing
Multiplayer by default with work visible to entire team
Lives in existing collaboration tools, not a separate app
Shared skills and memory compound across the team
Text your existing agent without changing workflows or tools
Grok Bot can wake from incoming SMS while your PC is off
No subscription required for one-time message packs
Merlin
Campfire SMS