whereismyai
CallSitter
CallSitter is an AI phone agent that answers calls, wastes scammers' time, declines sales calls, and takes messages from genuine callers.
CallSitter uses an OpenAI agent to answer phone calls diverted through Telnyx. TypeSafe Jev classifies transcripts to steer the call flow into scam, sales, or genuine handling. GPT-6 Luna writes rolling summaries, open questions, and end-of-call notes. Users receive real-time updates and can steer the agent or take over calls directly through Telegram. The system tracks vendor costs and enforces limits on spend and call length.
CallSitter at a glance
- Best for: Software engineer
- Runs on: Web, API, CLI, Self-hosted, Open source
- Pricing: Free
- Released: October 2026
- Category: AI agent tool
- Website: github.com/szerintedmi/callsitter
Key features
- Answers incoming phone calls with an AI agent
- Classifies transcripts to handle scams and sales calls
- Takes messages from genuine callers
- Sends real-time status updates to Telegram
- Provides live agent steering and call takeover
- Tracks detailed costs for vendor usage
- Enforces limits on call spend and duration
Use it for
- Wasting time on automated scam calls
- Declining sales and spam phone calls politely
- Taking messages from genuine callers
- Monitoring live calls and summaries on Telegram
- Taking over live calls to speak directly
Alternatives to CallSitter
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- VoiceGremlin — Validate AI voice agents with real phone calls and plain English test cases.
- CallMeMCP — It connects running artificial intelligence agents directly to phone calls.
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- Comma — It operates 24/7 on a cloud computer to finish tasks independently.
- PhoneClaw — It executes AI agent tasks and system tool calls entirely on-device.
- Agent — Find old conversations and continue existing tasks across connected machines.
- APIStack — Connect AI agents to over 100 tools using one API key or a single MCP endpoint.
- Better Together — Identifies coordinated spam campaigns by combining reports across multiple AI agents
- Agenta — Build and automate AI agents that run on your own infrastructure or the cloud.
All CallSitter alternatives