Spend controls for the agent economy

Your AI agent just spent
$12,400 while you slept.

You gave an autonomous agent your credit card and no spending limit. sipi.bot is the firewall that sits in front of every transaction and approves, blocks, or flags it against your rules — before a single dollar moves.

Protect my agent   See how it works
<5ms
decision latency
3
outcomes: approve / block / flag
50
scenario eval gym
MCP
+ HTTP + CLI native

Would you give an intern your credit card with no limit?

That's what happens the moment you deploy an autonomous agent. Here's the difference one API call makes.

❌ The old way — hope

  • 2:14a
    Agent hits a rate-limit, retries the purchase 40× $4,000
  • 2:15a
    Buys compute from an unknown vendor $6,200
  • 2:31a
    Tips an API into an overage tier $2,200
  • 9:03a
    You wake up. You find out from Stripe. $12,400

✅ The sipi.bot way — control

  • 2:14a
    Retry #11 exceeds velocity rule BLOCKED
  • 2:15a
    Unknown vendor not on allowlist BLOCKED
  • 2:31a
    $2,200 > approval threshold FLAGGED
  • 9:03a
    You wake up to a clean log and one thing to approve. $0 lost

One call. Before the money moves.

Your agent asks permission first. It's HTTP, so any agent can call it — and an MCP tool, so Claude Code / Cursor / Hermes call it natively.

# Your agent asks before it spends
curl -X POST https://sipi.bot/v1/transactions/evaluate \
  -H "Authorization: Bearer sk_live_..." \
  -d '{"amount": 6200, "merchant": "unknown-gpu.ru", "category": "compute"}'

# sipi.bot answers in <5ms
{ "decision": "BLOCKED", "reason": "Merchant not on allowlist" }

Hope is not a spending policy.

Without sipi.bot

  • 🔴 Agent spends first, you find out later
  • 🔴 One infinite loop drains the card at 3am
  • 🔴 No record of why anything was bought
  • 🔴 "Trust the prompt" is your only control

With sipi.bot

  • 🟢 Every spend checked against your rules first
  • 🟢 Velocity limits kill runaway loops instantly
  • 🟢 Tamper-evident audit log of every decision
  • 🟢 Human-in-the-loop on the transactions that matter

Your agent's spending department.

Not $0.05 per call. A flat firewall you never think about.

$99 / month
Hiring a human to babysit spend: $4,500/mo
  • ✓ Unlimited transaction evaluations
  • ✓ Per-tx, daily, velocity, merchant, category & time rules
  • ✓ Human-in-the-loop approval queue
  • ✓ Live dashboard + tamper-evident audit log
  • ✓ MCP tool + HTTP API + CLI
  • ✓ Guarantee: if we green-light a spend that breaks your rule, that month is free
Start the free pilot

Free self-host core  •  open on GitHub