ent (Go ORM)
Type-safe Go ORM framework using code generation. Define data schema in Go structs, run go generate, and get a fully type-safe querying API with no reflection. Supports PostgreSQL, MySQL, MariaDB, SQLite, and TiDB. Developed by Facebook (Meta) and used in production at scale. Graph-based querying for complex relationship traversal.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Generated parameterized queries prevent SQL injection. Schema-level field validation reduces invalid data entry. Hooks enable row-level security patterns.
⚡ Reliability
Best When
Go services with complex entity relationships where type-safe graph traversal and schema-first development matter.
Avoid When
You prefer SQL-first development or need high flexibility in query construction — use sqlc or GORM.
Use Cases
- • Build type-safe Go data access layers with schema defined in Go code and generated query builders
- • Implement complex entity relationship queries using ent's graph traversal API (edges, paths)
- • Auto-generate database migrations from ent schema changes using atlas integration
- • Build multi-tenant applications with ent's hook system for automatic tenant isolation
- • Implement audit logging and soft deletes with ent's interceptor and hook system
Not For
- • Teams preferring raw SQL — use sqlc for SQL-first code generation; ent is schema-first
- • Flexible dynamic queries — ent's type-safe API is less flexible than raw SQL for highly dynamic conditions
- • Non-SQL databases — ent is SQL-only
Interface
Authentication
ORM library — no auth needed. Database auth via connection string.
Pricing
Apache 2.0 licensed Facebook/Meta open source project.
Agent Metadata
Known Gotchas
- ⚠ Schema changes require running go generate — ent generates code from schema; changed schema fields won't be accessible until regeneration
- ⚠ ent migrations are separate from schema — use atlas (entgo.io/ent/dialect/sql/schema) for migration generation; don't assume schema.Create auto-migrates safely in production
- ⚠ Edge (relationship) loading is explicit — ent does NOT lazy-load edges; must use .WithX() eager loading or explicit .QueryX() calls
- ⚠ ent uses int by default for primary keys — switch to UUID or other types via schema.DefaultFunc or field.UUID() for distributed systems
- ⚠ Hooks and interceptors run for all mutations — test hooks carefully; accidentally recursive hooks cause infinite loops
- ⚠ ent v0.12+ changed the entc.Generate API — older entc.go examples may not compile with current versions
Alternatives
Full Evaluation Report
Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for ent (Go ORM).
Scores are editorial opinions as of 2026-03-06.