Agentsitter — The babysitter for your AI agents

Your AI agent is out there right now.
Is it behaving?

Somewhere right now a founder is waking up to an API bill they weren't expecting. Agentsitter exists so that founder isn't you. Daily email at 8am. Real numbers. No guessing.

🟢 Check your inbox — your API key is on its way.

✓ Free✓ No credit card✓ 2 minute setup See live demo →

Agents being watched right now live

Agent	Calls today	Spend today	Status
arena-trading-agent watched by agentsitter · comptexlabs · manchester	847	£0.02313	GREEN
Add your agent

What you wake up to

Every morning at 8am.
Your agent's full overnight report.

Exactly how many calls it made, what it spent, and whether anything looked wrong. In your inbox before you've made coffee.

Sent at 08:05 every morning

Real call count · Real spend

Quant-powered anomaly detection

Agentsitter daily digest email showing Status GREEN, 1000 API calls, £0.0272 spend, no anomalies

Why this exists

⚠ Real incident · 2025

$47k

Two agents. Talking to each other. Non-stop. For eleven days.

Nobody noticed. Nobody got an alert. The bill quietly accumulated while the team assumed everything was fine.

Agentsitter would have caught it on day one. The moment costs stopped looking normal, the founder would have had an email. Not a $47,000 invoice.

Day 1 — Loop starts

Day 4 — Cost hits $8k

Day 11 — Someone checks the bill

With Agentsitter — alerted day 1

Available on PyPI. Works with OpenAI, Anthropic, or anything else.

pip install agentsitter

Get started free →

Three lines of code.
Then forget about it.

Get your API key

Enter your email. Your unique key lands in your inbox in 30 seconds. Free. No card needed.

pip install agentsitter

Add three lines

Drop it into your agent. Works with OpenAI, Anthropic, Groq, or any LLM.

import agentsitter
sitter = agentsitter.watch(
  api_key="agt_xxx",
  alert="you@email.com")
# after every call:
sitter.track(cost=0.004)

GPT-4o → 0.005 · Claude → 0.004 · Groq → 0.0001 · not sure? use 0.01

Wake up to GREEN

Daily email at 8am. Real call count. Real spend. If something went wrong overnight, you already know before you open your laptop.

Your AI agent is out there right now.
Is it behaving?

Every morning at 8am.
Your agent's full overnight report.

Two agents. Talking to each other. Non-stop. For eleven days.

Three lines of code.
Then forget about it.

Get your API key

Add three lines

Wake up to GREEN

Your agents are running
right now.

Your AI agent is out there right now.Is it behaving?

Every morning at 8am.Your agent's full overnight report.

Two agents. Talking to each other. Non-stop. For eleven days.

Three lines of code.Then forget about it.

Get your API key

Add three lines

Wake up to GREEN

Your agents are runningright now.

Your AI agent is out there right now.
Is it behaving?

Every morning at 8am.
Your agent's full overnight report.

Three lines of code.
Then forget about it.

Your agents are running
right now.