> ## Documentation Index
> Fetch the complete documentation index at: https://rydantic.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# One model. Every boundary.

> A field guide to typed data, APIs and AI in Rust.

 THE RYDANTIC FIELD GUIDE

# One model.Every boundary.

Give your data a contract. Carry it from JSON to APIs, databases and typed AI agents.Pydantic-style modeling, built for Rust. Define a type once, then parse, validate, serialize and persist it with the integrations you need.

[Start building ](/quickstart)
[Explore RydanticAI ](/integrations/ai)

 model.rsRUST

```rust theme={"system"}
use rydantic::Model;

#[derive(Model)]
struct User {
    #[model(trim, min_length = 2)]
    name: String,

    #[model(coerce, ge = 18)]
    age: u8,
}
```

Validated at the boundary.Ready for your application.

ONE RUST TYPEJSONJSON SchemaHTTPSQLCap’n ProtoAI

FROM IDEA TO IMPLEMENTATIONWhat are you building?Pick a path. Keep the same model.

[01 / CORE MODELS Make your data trustworthy.Parse JSON, normalize fields and return useful validation errors.Your first model ](/quickstart)
[02 / RYDANTIC AI Build agents with a contract.Typed tools, structured streams, image and PDF inputs, and a model gateway.Build an agent ](/integrations/ai)
[03 / HTTP APIS Meet requests with validation.Use Axum extractors, typed responses and clear error boundaries.Create an endpoint ](/integrations/axum)
[04 / STORAGE & WIRE FORMATS Take your model further.Connect SQL databases, evolve tables and generate native binary bindings.Explore integrations ](/integrations/overview)

LEARN BY DOINGStart with a working project.Run it. Change it. Make it yours.

[GUIDED PROJECTS Follow the tutorials.Build a data contract, a CRUD API and a typed agent. Then add structured streams.Start learning ](/tutorials/overview)
[RUNNABLE RECIPES Find your next example.Copy a working command for models, HTTP, databases, agents and binary protocols.Browse examples ](/examples/overview)

KNOW YOUR VERSIONCore guides and the default installation follow **Rydantic 0.7.0 stable**, including its breaking explicit-derive contract. Callback lists, per-call context and pipelines are available in the opt-in **0.8.0-beta.1 prerelease**; they are not included in 0.7.0. RydanticAI is independently versioned at **0.6.0**, and PDF inputs remain AI development features. See release notes for breaking changes and publication status before upgrading.[Release notes ](/reference/releases)

LOOKING FOR SOMETHING SPECIFIC?[JSON Schema ](/models/schema)[Cap’n Proto ](/integrations/capnp)[Cargo features ](/reference/features)


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