# Neofin V1

## Docs
- [Start your Neofin journey](https://neofinv1.apidog.io/english/start-your-neofin-journey-902691m0.md): 
- [Setup your environment](https://neofinv1.apidog.io/english/setup-your-environment-902929m0.md): 
- NeofinV1 > Billing API > Upsert a billing [How to upsert a billing](https://neofinv1.apidog.io/english/how-to-upsert-a-billing-905104m0.md): 
- NeofinV1 > Billing API > Retrieve a billing [How to retrieve a single billing](https://neofinv1.apidog.io/english/how-to-retrieve-a-single-billing-905118m0.md): 
- NeofinV1 > Billing API > Mark a billing as paid [How to mark a billing as paid](https://neofinv1.apidog.io/english/how-to-mark-a-billing-as-paid-905121m0.md): 
- NeofinV1 > Billing API > Cancel a billing [How to cancel a billing](https://neofinv1.apidog.io/english/how-to-cancel-a-billing-905124m0.md): 
- NeofinV1 > Billing API > Listing billings [How to list your billings](https://neofinv1.apidog.io/english/how-to-list-your-billings-905127m0.md): 
- NeofinV1 > Billing API > Upload attachments [How to upload attachments](https://neofinv1.apidog.io/english/how-to-upload-attachments-905125m0.md): 
- NeofinV1 > Customer API > Upserting a customer [How to upsert a customer](https://neofinv1.apidog.io/english/how-to-upsert-a-customer-905129m0.md): 
- NeofinV1 > Webhooks [How to setup your webhooks](https://neofinv1.apidog.io/english/how-to-setup-your-webhooks-905133m0.md): 

## API Docs
- NeofinV1 > Billing API > Upsert a billing [Upsert a billing](https://neofinv1.apidog.io/english/upsert-a-billing-15328466e0.md): Upserts a billing
- NeofinV1 > Billing API > Retrieve a billing [Get billing by Integration Identifier](https://neofinv1.apidog.io/english/get-billing-by-integration-identifier-15328471e0.md): 
- NeofinV1 > Billing API > Retrieve a billing [Get billing by Billing Number](https://neofinv1.apidog.io/english/get-billing-by-billing-number-15359541e0.md): 
- NeofinV1 > Billing API > Mark a billing as paid [Mark a billing as paid](https://neofinv1.apidog.io/english/mark-a-billing-as-paid-15328467e0.md): 
- NeofinV1 > Billing API > Cancel a billing [Cancel a billing](https://neofinv1.apidog.io/english/cancel-a-billing-15328468e0.md): 
- NeofinV1 > Billing API > Listing billings [Billing by status](https://neofinv1.apidog.io/english/billing-by-status-15328474e0.md): 
- NeofinV1 > Billing API > Listing billings [Billing by customer](https://neofinv1.apidog.io/english/billing-by-customer-15328475e0.md): 
- NeofinV1 > Billing API > Listing billings [Billing updated date](https://neofinv1.apidog.io/english/billing-updated-date-15328476e0.md): 
- NeofinV1 > Billing API > Listing billings [Billing Events](https://neofinv1.apidog.io/english/billing-events-15328472e0.md): 
- NeofinV1 > Billing API > Listing billings [Billing Events by Integration Identifier](https://neofinv1.apidog.io/english/billing-events-by-integration-identifier-15328473e0.md): 
- NeofinV1 > Billing API > Upload attachments [Upload a Billing NF by Integration Identifier](https://neofinv1.apidog.io/english/upload-a-billing-nf-by-integration-identifier-15328469e0.md): 
- NeofinV1 > Billing API > Upload attachments [Upload a Billing Boleto by Integration Identifier](https://neofinv1.apidog.io/english/upload-a-billing-boleto-by-integration-identifier-15328470e0.md): 
- NeofinV1 > Customer API > Upserting a customer [Upsert a customer](https://neofinv1.apidog.io/english/upsert-a-customer-15328479e0.md): 
- NeofinV1 > Customer API > Retrieve a customer [Get a customer by Integration Identifier](https://neofinv1.apidog.io/english/get-a-customer-by-integration-identifier-15328477e0.md): 
- NeofinV1 > Customer API > Retrieve a customer [Get a customer by their document](https://neofinv1.apidog.io/english/get-a-customer-by-their-document-15328478e0.md):