Built-in Gates

l0-git comes with 34 built-in gates organized by theme. Each gate is designed to be deterministic and fast.

Project Hygiene & Governance

ID	Severity	Description
readme_present	Warning	Ensures a README file exists at the project root.
license_present	Warning	Ensures a LICENSE file exists at the project root.
contributing_present	Info	Ensures a CONTRIBUTING.md file exists at the project root.
security_present	Info	Ensures a SECURITY.md file exists at the project root.
changelog_present	Info	Ensures a CHANGELOG.md file exists at the project root.
code_of_conduct_present	Info	Ensures a CODE_OF_CONDUCT.md file exists.
codeowners_present	Info	Ensures a CODEOWNERS file exists.
pr_template_present	Info	Ensures a Pull Request template exists.
issue_template_present	Info	Ensures Issue templates exist.
ci_workflow_present	Warning	Ensures at least one CI workflow exists.
branch_protection_declared	Info	Verifies branch protection is declared as code.

Git & Repository Hygiene

ID	Severity	Description
gitignore_present	Warning	Ensures a .gitignore file exists at the project root.
gitignore_coverage	Warning	Cross-checks .gitignore against the detected stack.
merge_conflict_markers	Error	Detects unresolved merge conflict markers.
large_file_tracked	Warning	Flags tracked files larger than a threshold (default 5MB).
ide_artifact_tracked	Warning	Flags tracked editor/IDE/OS artifacts.
vendored_dir_tracked	Warning	Flags tracked vendored directories (e.g., node_modules).
unexpected_executable_bit	Warning	Flags files with unexpected executable bits.
filename_quality	Info	Flags filenames with spaces or non-ASCII characters.

Security

ID	Severity	Description
secrets_scan	Error	Scans tracked files for hardcoded secrets.
connection_strings	Info	Scans for connection URIs with inline credentials.
network_scan	Info	Scans for public IPv4 literals and CIDRs.
secrets_scan_history	Warning	Scans git history for secrets (Opt-in).
large_blob_in_history	Warning	Flags large blobs in git history (Opt-in).

Quality & Release

ID	Severity	Description
tests_present	Warning	Detects the presence of tests for various languages.
version_drift	Warning	Cross-checks versions across different manifests.
nvmrc_missing	Info	Ensures .nvmrc or .node-version exists for Node projects.

Specialized Lints

ID	Severity	Description
dockerfile_lint	Warning	AST-based lint for Dockerfiles.
compose_lint	Warning	YAML-AST lint for Docker Compose files.
html_lint	Warning	Accessibility and WCAG lint for HTML files.
css_lint	Warning	Objective quality lint for CSS/SCSS/LESS files.
markdown_lint	Warning	AST lint for Markdown documentation.

Documentation

ID	Severity	Description
dead_placeholders	Info	Scans for TODO, FIXME, and placeholder text.
env_example_uncommented	Info	Ensures .env.example keys have descriptive comments.