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JSON to Rust Serde

JSON Input
Rust Serde Struct
use serde::{Serialize, Deserialize};
use serde_json;

#[derive(Debug, Serialize, Deserialize)]
pub struct User {
    pub id: i64,
    pub name: String,
    pub email: String,
    pub age: i64,
    pub active: bool,
    pub score: f64,
    pub tags: Vec<String>,
    pub address: Address,
    pub metadata: Option<String>,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct Address {
    pub street: String,
    pub city: String,
}
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This tool is provided as-is for convenience. Output should be verified before use in any production or critical context.

Programmatic Access

JSON to Rust Serde is also callable as a free HTTP JSON API at https://aidevhub.io/api/json-to-rust-serde/ — GET with query parameters or POST with a JSON body, no authentication, CORS enabled, 50 requests/day per IP. Responses return { ok, tool, result, meta }. 

curl -s -X POST https://aidevhub.io/api/json-to-rust-serde/ \
  -H "Content-Type: application/json" \
  -d '{"json":"{\"id\":1,\"name\":\"Alice\"}","root_name":"User"}'

Machine-readable contract: /api/tool/json-to-rust-serde.json All API endpoints: /agents/ LLM site index: /llms.txt

Agent Invocation

Best Path For Builders

Dedicated API endpoint

Deterministic outputs, machine-safe contracts, and production-ready examples.

Dedicated API

https://aidevhub.io/api/json-to-rust-serde/

OpenAPI: https://aidevhub.io/api/openapi.yaml

GET /api/json-to-rust-serde/ GET json-to-rust-serde
POST /api/json-to-rust-serde/ POST json-to-rust-serde

Unified Runtime API

https://aidevhub.io/api/tools/run/?toolId=json-to-rust-serde&a=...

GET and POST are supported at /api/tools/run/ with identical validation and limits.

Limit: 60 req / 60s, input max 128 KB.

How to Use JSON to Rust Serde

  1. 1

    Paste your JSON data

    Input a JSON object or array in the left panel. The tool parses the structure and infers Rust types: strings become String, integers become i64, decimals become f64, booleans become bool, and null becomes Option<T>.

  2. 2

    Configure struct options

    Set the root struct name (default: Root). Toggle Option<T> wrapping for nullable fields. Enable #[serde(rename_all)] attributes for snake_case or camelCase mapping. Choose between owned String and borrowed &str types.

  3. 3

    Review generated Rust structs

    The right panel shows Rust structs with #[derive(Serialize, Deserialize)] and proper serde attributes. Nested objects become separate named structs. Copy the output into your Rust project alongside your serde dependency.

Frequently Asked Questions

What is Serde and why is it the standard for Rust JSON?
Serde is Rust's most popular serialization framework. It provides efficient, zero-copy serialization of Rust data types to and from formats like JSON. The #[derive(Serialize, Deserialize)] macro generates all the boilerplate code automatically at compile time.
What does #[derive(Debug, Serialize, Deserialize)] mean?
These are derive macros that tell Rust's compiler to automatically generate trait implementations. Debug enables printing structs with println!, Serialize makes the struct convertible to JSON, and Deserialize allows parsing JSON back into the struct.
What does the rename_all option do?
rename_all applies a naming convention to all fields during serialization. For example, rename_all="camelCase" converts Rust snake_case field names to JSON camelCase. This bridges the naming convention gap between Rust and JSON APIs.
Why use Option<T> for null values?
Option<T> is Rust's safe way to represent nullable values. Option<String> means the field can be Some(value) or None. This forces you to handle missing data explicitly, preventing null pointer errors. The tool defaults to this for safety.
How do I use the generated structs in my Rust code?
Copy the generated code into your Rust project. Then use serde_json::from_str::<MyStruct>(json_string) to parse JSON into your struct. The compiler enforces type safety automatically. For serialization, use serde_json::to_string(&my_instance) to convert back to JSON.