Firefly vs Tirith

Firefly automates cloud infrastructure with Infrastructure-as-Code and helps teams govern environments and recover from outages or cyberattacks. Its tooling provides IaC orchestration, GitOps guardrails, self-service provisioning, and automated IaC generation. Firefly scans cloud environments to build an inventory and identify unmanaged resources, drift, and misconfigurations. Immutable IaC snapshots can rebuild complete environments in a clean region or account, or roll them back to a pre-breach or last-known-good state. Integrations include AWS, Azure, Google Cloud, Kubernetes, GitHub, GitLab, Bitbucket, Slack, Microsoft Teams, PagerDuty, Jira, and ServiceNow. Its MCP Server connects with compatible tools such as Cursor and Claude for natural-language discovery and codification. Firefly says it scans metadata and configurations without accessing workload data such as S3 contents or VM file systems. It states that it is SOC 2 Type II certified and offers more than 600 built-in policies. The 14-day trial has full feature access; Essential starts at $2,499 per month billed annually.

Tirith is a free, open-source Linux command-line tool that evaluates infrastructure documents against declarative JSON policies. It reports passed and failed rules together with the affected resource and value. Its pipeline gate checks Terraform plan output and can return a nonzero exit code when a policy violation appears, before infrastructure changes are applied. Documented inputs include Terraform plans and state, Kubernetes manifests, Infracost breakdowns, and other JSON documents. Policies can use providers and evaluators such as ContainedIn, Equals, and RegexMatch, while the provider architecture can be extended for other formats. Local evaluation runs on the user’s runner, and the project says policies and documents are not sent elsewhere. Optional organization mode checks plans against StackGuardian policies and uploads a masked document. Tirith documents GitHub Actions, GitLab CLI use, Bitbucket Pipelines, other CI, and local execution. OpenTofu plans work like Terraform plans for the documented gate.