The SendAPI Skill packages our messaging know-how into a drop-in skill for Claude. It knows which channel to use, how to verify, and when to ask before sending in bulk.
Copy the skill into your skills directory, then ask Claude to send a message:
mkdir -p ~/.claude/skills/sendapi
cp -r SKILL.md references ~/.claude/skills/sendapi/
Per-project, place it at .claude/skills/sendapi/ instead. Pairs with the SendAPI MCP server, which is live now.