Know the cost
before you merge
Zerobillbot analyzes infrastructure-as-code changes in every pull request and posts detailed cost impact analysis across AWS, Azure, and GCP before it hits production.
3
Cloud providers benchmarked
<2s
Average scan time
100%
AWS benchmark match
9/9
GCP & Azure test cases matched
Benchmark confidence
Validated across cloud providers
AWS
CloudFormation benchmark suite
100% matched report totals
Azure
ARM benchmark suite
Expected totals matched line-by-line
GCP
Deployment Manager benchmark suite
Expected totals matched line-by-line
See it in action
Real cost analysis, right in your PR
Every pull request with IaC changes gets an automatic cost breakdown comment and a pass/fail check run.
💰 Cost Impact Analysis
Providers: AWS, Azure, GCP | Pricing as of: 2026-03-07
📈 Estimated monthly cost increase: $99.48
❌ BLOCKED: Cost change exceeds failure threshold of $25
| Service | Resource | Action | Monthly Δ | Notes |
|---|---|---|---|---|
| aws.ec2 | aws_instance.web_server | ➕ create | +$16.94 | Instance type: t3.small |
| azure.compute | azurerm_linux_virtual_machine.LinuxVmD2sV5 | ➕ create | +$27.80 | Standard_D2s_v5 |
| gcp.storage | google_compute_disk.ComputeN2Standard4-boot-disk | ➕ create | +$13.60 | pd-ssd 100GB |
⚠️ Benchmarks: AWS, Azure, and GCP baseline suites validated against expected outputs
How it works
Three steps to cost visibility
Install the GitHub App
One click to install Zerobillbot on your organization or repo. No config files needed to get started.
Open a PR with IaC changes
Push Terraform or CloudFormation changes. Zerobillbot detects infrastructure changes automatically.
Get cost analysis before merge
Receive a detailed cost breakdown comment and a GitHub Check Run. Block merges that exceed your budget.
Features
Everything you need for cost guardrails
Built for modern DevOps teams who ship infrastructure changes daily. Zerobillbot integrates seamlessly into your existing GitHub workflow.
Zero config
Install and go. Zerobillbot works out of the box with sensible defaults. No setup files, no CI pipelines to configure.
Terraform + CloudFormation
Supports Terraform, CloudFormation, ARM, and Deployment Manager patterns detected directly in PR diffs.
Custom thresholds
Set warning and failure thresholds via .costbot.yml. Block merges that would blow your budget.
Multi-cloud pricing engine
Built for AWS, Azure, and GCP with benchmark-verified output to keep cost comments consistent and actionable.
Merge blocking
Automatically block PRs that exceed cost thresholds. Give your finance team confidence in engineering decisions.
Real-time dashboard
Track scans, view cost trends, and manage installations from your personal dashboard with live updates.
Trusted by teams
What engineers are saying
"Zerobillbot caught a $2,000/month NAT Gateway before it was merged. Paid for itself in the first week."
Sarah Chen
Platform Engineer at Series B Startup
"We've tried other tools but Zerobillbot's zero-config approach and GitHub-native integration made it a no-brainer."
Marcus Rodriguez
DevOps Lead at Fintech Company
"The threshold blocking feature gives our finance team confidence that engineers can't accidentally spin up expensive resources."
Aisha Patel
Engineering Manager at E-commerce Platform
Configuration
Simple config, powerful control
Drop a .costbot.yml in your repo root to customize thresholds, enable notifications, and fine-tune Zerobillbot for your workflow.
- Set per-repo cost thresholds
- Ignore specific resources or patterns
- Configure Slack & Teams alerts
- Support for all AWS regions
# Zerobillbot configuration thresholds: warn: 10 # Warn if monthly cost delta > $10 fail: 25 # Block if monthly cost delta > $25 ignore: - "aws_cloudwatch_log_group.*" - "aws_iam_*" notifications: slack: webhook: "https://hooks.slack.com/..." on: ["warn", "fail"] regions: - us-east-1 - ap-southeast-1
Stop surprise cloud bills
at code review
Join teams using Zerobillbot to catch costly infrastructure changes before they hit production. Free for your first repo.