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Why CLI-First?

SendyKit chose CLI over MCP for agent integration. Here’s why: Agents with shell access (Claude Code, Pi, Letta, OpenCode, Cursor) can use SendyKit’s full power through the same CLI humans use.

Example Agent Workflows

”Add this lead to the onboarding drip"

"Show me the best performing campaign this month"

"Create a re-engagement campaign for inactive subscribers"

"Run a full health check and fix what you can"

"What’s my deliverability looking like?”

Skill File

For structured agent integration, add a SKILL.md to your agent’s skills directory:

Machine Payments

For agents without shell access, SendyKit’s machine-paid path is Stripe-native machine payments. Use X-Stripe-Machine-Payment proofs for premium actions.