# std/openapi

The contract as an OpenAPI 3.1 document, built from generator imports. `openapi(contract)` reflects the contract with `moduleInterface` and returns a module exporting `openapiJson() -> String`.

```vyrn
import { openapi } from "std/openapi"
import { openapiJson } from openapi("./contract")

```

The document holds one `POST /rpc/<proc>` path per procedure in declaration order, with a `200` response and the `422` Issues shape `std/rpc` returns, and one `components/schemas` entry per type in the reachable closure, sorted by name. Each schema body is a runtime `jsonSchema()` call, because `moduleInterface` carries only a scalar's shallow bounds; each is a compile-time constant, so the document is byte-stable. `std/json` writes it pretty-printed. No callbacks, webhooks or auth schemes.

## openapi

`fn`, at line 149.

```vyrn
gen fn openapi(contract: String) -> String
```

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From https://vyrn-lang.github.io/docs/std/openapi.html — generated by `site/export.vyrn` from the Vyrn repository.