Now available as a GitHub App

Ship with
cost review
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.

Install on GitHub — Free Read the Docs

Terraform CloudFormation AWS + Azure + GCP

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.

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.

Developer working on infrastructure code

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.

New

Real-time dashboard

Track scans, view cost trends, and manage installations from your personal dashboard with live updates.

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 alerts
Support for all AWS regions

.costbot.yml

# Zerobillbot configuration
threshold:
  warn_if_over: 10
  fail_if_over: 25

services:
  include:
    - lambda
    - storage_api
  catalog:
    - name: lambda
      unit: requests
      monthly_usage: 2500000
      rate: 0.0000003

slackWebhook: "https://hooks.slack.com/..."

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.

Get Started Free View Pricing

GitHub App

Preview the install experience right before conversion

Open app

Ship with cost review before you merge