---
title: "Client SDKs"
description: "Language-specific clients generated from the Fabro OpenAPI spec"
---

The Fabro API is defined by an OpenAPI 3.1 specification (`docs/api-reference/fabro-api.yaml` in the repository) that serves as the single source of truth for all endpoints, request/response schemas, and parameter definitions. The spec is also available at runtime from the server at `GET /api/v1/openapi.json`. Both client SDKs below are generated directly from this spec.

## TypeScript (Axios)

The `@qltysh/fabro-api-client` package is a fully typed HTTP client generated with the [OpenAPI Generator](https://openapi-generator.tech/) using the `typescript-axios` template. It produces typed API classes (one per tag) and model interfaces for every schema.

### Regenerating

From the repository root:

```bash
cd lib/packages/fabro-api-client
bun run generate
```

This runs `openapi-generator-cli` against `docs/api-reference/fabro-api.yaml` and writes the generated source into `lib/packages/fabro-api-client/src/`.

### Usage

```typescript
import { RunsApi, Configuration } from "@qltysh/fabro-api-client";

const config = new Configuration({ basePath: "http://localhost:3000" });
const runs = new RunsApi(config);

const { data } = await runs.listRuns();
console.log(data);
```

The generated client includes a typed API class for each endpoint group: `RunsApi`, `WorkflowsApi`, `SessionsApi`, `VerificationsApi`, `InsightsApi`, and others.

## Rust (Types + Client)

The `fabro-api` crate generates Rust structs, enums, and a `reqwest`-based HTTP client from the full OpenAPI spec at compile time using [progenitor](https://github.com/oxidecomputer/progenitor). This provides type-safe representations of all API models and a builder-style client for every endpoint.

### How It Works

A `build.rs` script reads `docs/api-reference/fabro-api.yaml`, patches it from OpenAPI 3.1 to 3.0 for progenitor compatibility, and generates both types and a client. The generated code is written to `OUT_DIR` and included via:

```rust
// lib/crates/fabro-api/src/lib.rs
include!(concat!(env!("OUT_DIR"), "/codegen.rs"));
```

### Regenerating

The types and client are regenerated automatically on every `cargo build` when the OpenAPI spec changes:

```bash
cargo build -p fabro-api
```

### Usage

```rust
use fabro_api::types::RunListItem;
use fabro_api::Client;

let client = Client::new("http://localhost:3000");
```

All generated types derive `serde::Deserialize` and `serde::Serialize`. The client uses builder-style methods for each endpoint.