NthLayer Reliability Check

Version updated for https://github.com/rsionnach/nthlayer to version v0.1.0a17.

  • This action is used across all versions by 0 repositories.

Action Type

This is a Composite action.

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Action Summary

NthLayer is a GitHub Action designed to help platform teams proactively manage and improve service reliability by shifting reliability practices earlier in the development lifecycle. It automates tasks such as detecting SLO violations, predicting error budget exhaustion, validating feasibility of SLOs based on dependency chains, and gating deployments based on real-time reliability data. Key features include drift detection, dependency-aware SLO validation, deployment gating, blast radius analysis, metric recommendations, and automated generation of reliability artifacts like dashboards, alerts, and SLO configurations.

Release notes

v0.1.0a17 (February 27, 2026)

Orchestrator Refactor

  • Phased orchestration package (orchestration/) — split monolithic ServiceOrchestrator into modular components
    • ResourceHandler protocol and ResourceRegistry for pluggable resource types
    • ExecutionEngine for running generation loops with ResultCollector aggregation
    • PlanBuilder for previewing generation plans before execution
    • ServiceOrchestrator retained as backward-compatible facade

Desloppify Code Quality Sweep

  • 29 findings resolved — structured logging enforcement, dead code removal, test coverage gaps
  • Migrated mock_server.py to tests/fixtures/, added conftest.py for shared test config
  • New test_critical_models.py and test_verification.py test suites
  • Cleaned up demo files, renamed ad-hoc scripts to try_ prefix
  • Removed duplicate cli/formatters/models.py, consolidated SARIF formatter

Deployment Detection

  • Provider-agnostic webhook handling via BaseDeploymentProvider ABC
  • ArgoCD, GitHub Actions, and GitLab CI/CD webhook parsers
  • DeploymentProviderRegistry for self-registering providers
  • HMAC SHA256 signature verification per provider

Policy Audit Logging

  • Immutable audit trail for deployment gate decisions
  • Domain models: PolicyEvaluation, PolicyViolation, PolicyOverride
  • REST API: POST /policies/{service}/override, GET /policies/{service}/audit

Also included

  • Harness engineering infrastructure
  • Backstage plugin for reliability data integration
  • Grafana dashboard links in alert annotations
  • 10 audit findings resolved
  • Lazy AWS imports for CI environments
  • MkDocs GitHub Pages workflow

Full changelog: https://github.com/rsionnach/nthlayer/blob/main/CHANGELOG.md