Terracotta AI

What is Terracotta AI?

Terracotta AI is a YC-backed (S23) AI code reviewer and assistant built specifically for Infrastructure as Code. While tools like CodeRabbit review application code, Terracotta understands Terraform, OpenTofu, and CDK-TF semantics — analyzing plans, detecting drift, calculating blast radius, and catching misconfigurations before they're merged into production infrastructure.

Key Features

IaC-Aware PR Reviews — Terracotta connects to your Terraform state and cloud account to provide context-aware PR reviews. Instead of generic comments, it shows: "this change will replace your production RDS instance" or "this security group change exposes port 22 to 0.0.0.0/0."

Blast Radius Analysis — Before merging an IaC change, Terracotta calculates what resources will be created, modified, or destroyed — and flags potentially destructive changes for human review.

Drift Detection — Compares your Terraform state with actual cloud resources to detect manual changes that haven't been codified in IaC.

Misconfiguration Detection — Identifies security misconfigurations, cost inefficiencies, and best practice violations in IaC code using a library of IaC-specific rules.

AI IaC Assistant — Chat interface for writing Terraform faster. Describe the infrastructure you need and Terracotta generates correct, idiomatic Terraform.

GitHub Integration — Installs as a GitHub App. PR comments appear directly in pull requests with infrastructure-specific context that generic code reviewers can't provide.

Why IaC Needs Its Own Reviewer

General-purpose code reviewers (CodeRabbit, PR-Agent) don't understand infrastructure semantics. They might catch a syntax error but won't know that changing lifecycle { prevent_destroy = true } to false could cause accidental deletion of a production database. Terracotta understands this context.

Pricing

• Free: public and open-source repositories
• 14-day free trial for private repos
• Paid plans for private repos: team pricing

Bottom Line

For teams using Terraform or OpenTofu, Terracotta AI adds a critical safety layer that general code reviewers can't provide. The blast radius analysis alone prevents the kind of infrastructure accidents that take hours to recover from.