SeaORM
Async ORM for Rust built on SQLx with a familiar Active Record and Data Mapper pattern. Provides entity definitions, query building, migrations (SeaMigration), and model relations with async execution. Positioned as the Rust equivalent of ActiveRecord or Hibernate — generate entities from existing databases or define code-first. Part of the SeaQL ecosystem (SeaQuery for query builder, SeaMigration for migrations).
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Built on SQLx — parameterized queries prevent SQL injection. TLS support inherited from database driver. Credentials via environment variables.
⚡ Reliability
Best When
You want a full async ORM experience in Rust with entity definitions, relations, and migrations — ActiveRecord/Hibernate style but async and type-safe.
Avoid When
You prefer writing raw SQL with compile-time checking (use SQLx) or want the most mature Rust ORM (use Diesel for sync, though it has less async support).
Use Cases
- • Build Rust web services with full ORM capabilities — entity definitions, relations, migrations — without writing raw SQL
- • Generate entity code from existing database schemas using sea-orm-cli for rapid development with legacy databases
- • Implement complex entity relationships (has_many, belongs_to, many_to_many) in Rust async services
- • Run database migrations with SeaMigration as versioned Rust code with up/down semantics
- • Create high-performance async database access layers in Actix-web or Axum applications with connection pooling
Not For
- • SQL-first teams preferring compile-time checked raw SQL — SQLx gives more SQL control with type safety
- • Complex ORM features like automatic lazy loading — SeaORM requires explicit async loading of relations
- • Non-async contexts — SeaORM is async-first and requires Tokio or async-std runtime
Interface
Authentication
Authentication via database connection string. No library-level auth.
Pricing
MIT and Apache 2.0 dual license. Community maintained.
Agent Metadata
Known Gotchas
- ⚠ Entity models must implement the Model trait — sea-orm-cli codegen is the recommended way to create entities, manual creation is verbose
- ⚠ Relation loading is explicit (find_with_related, load_many) — no lazy loading; N+1 query problem must be addressed by the developer
- ⚠ ActiveModel concept distinguishes Set vs NotSet vs Unset for partial updates — using the wrong variant skips or overwrites fields unexpectedly
- ⚠ SeaMigration requires separate crate setup — migrations are Rust structs, not SQL files, adding build complexity vs golang-migrate or flyway
- ⚠ QueryFilter uses sea_query::Condition syntax which differs from plain SQL — learning curve for complex WHERE clauses and JOINs
- ⚠ Database feature flags must match compile configuration — enabling wrong feature (sqlx-postgres vs sqlx-mysql) causes compilation errors that aren't always clear
Alternatives
Full Evaluation Report
Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for SeaORM.
Scores are editorial opinions as of 2026-03-06.