Open source alternatives to voice-call

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voice-call

Start voice calls via the OpenClaw voice-call plugin

voice-call is an agent skill from the OpenClaw project, listed on skills.sh. It lets an agent start and check phone calls with OpenClaw's voice-call plugin, through Twilio, Telnyx or Plivo (or a mock provider for testing). A skill is a SKILL.md file of instructions (sometimes with scripts and reference notes) that an AI agent loads only when a task calls for it, so the agent knows the steps to follow and what to avoid. It is free and open source.