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

# OpenAPI

The reference in this site is rendered from an OpenAPI 3.1 document, and that document is published. You can generate a client from it, load it into a request tool, or hand it to an assistant.

## Where it is

One document per documented version:

```
https://docs.kirafin.ai/openapi/kira-api.2026-06-01.json
https://docs.kirafin.ai/openapi/kira-api.2026-04-14.json
```

The version in the filename is the version it describes. Take the one you send in `X-Api-Version` — see [Versioning](/using-the-api/versioning).

## What it carries

Every operation, with its request and response schemas, its error bodies, and a real example on each. Each operation also declares its own servers, sandbox first, so a client generated from it points at sandbox until you change it.

## Generating a client

Any OpenAPI 3.1 generator works. Two things worth knowing before you trust what comes out:

**Amounts are strings.** A generator will type them as strings because that is what they are. Keep them that way and parse them as decimals — a generator that offers to coerce them to numbers is offering to round your money.

**A field being present in a schema is not a promise it always arrives.** Most response schemas mark nothing as guaranteed, and the few that still do are being cleared as each endpoint is rewritten — so treat every response field as optional whatever the schema says, and handle absence rather than trusting a generated non-null type.

## Keeping up with it

The document changes when the API does. Regenerate rather than hand-editing what a generator produced, and pin the version you generated from so a regeneration is a decision rather than a surprise.