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

# MED & Infractions

> Manage payer-side MED cases and inspect related infractions.

The Special Return Mechanism (MED) endpoints expose payer-side case creation, listing, detail, and cancellation. Infraction endpoints list and retrieve the related infraction records available to the authenticated account.

### MED endpoints

* Create case — `POST /v3/med/create`
* List cases — `POST /v3/med/list`
* Get case — `POST /v3/med/detail`
* Cancel case — `POST /v3/med/cancel`

### Infraction endpoints

* List infractions — `POST /v3/infractions/list`
* Get infraction — `POST /v3/infractions/detail`

### Authentication and account targeting

All endpoints use signed POST requests. Send `X-Client-ID`, `X-Timestamp`, `X-Nonce`, and `X-Signature`. `X-Content-Hash` is optional for inbound API calls.

For a USER credential, send both `X-ISPB` and `X-Account-Number` to select the account. An ACCOUNT credential can omit the pair and use its bound account.

Case details can include timeline events, infractions, and refund summaries. Do not infer a final case outcome from the create response alone.