Skip to content

Overview

The Meow API provides comprehensive financial services and billing capabilities for businesses.

Core Features

  • Financial Data Access: Securely access account information, transactions, balances, and payment networks
  • USDC Operations: Create and manage cryptocurrency contacts, initiate USDC transfers across multiple blockchain networks

Billing API

The Billing API enables businesses to streamline their invoicing and payment collection:

  • Product Management: Create and manage products with customizable pricing
  • Customer Management: Maintain invoicing customers with billing addresses
  • Invoice Creation: Generate invoices with line items, discounts, and custom notes
  • Flexible Payment Options: Accept payments via bank transfer, ACH, cards, international wires, and USDC
  • Collection Accounts: Configure accounts for automated payment collection

Getting Started

Authenticate using your API key in the request header: x-api-key: your-api-key

For multi-entity access, you can optionally include the x-entity-id header to scope API requests to a specific entity. Use the /api-keys/accessible-entities endpoint to list all entities accessible by your API key.

Error Responses

Errors return JSON with code, message, and debug_message. The code aligns with FDX where possible; debug_message is for troubleshooting only.

Common error codes:

  • 500: Internal server error
  • 501: Subsystem unavailable
  • 503: Scheduled maintenance
  • 601: Data not found
  • 602: Customer not authorized
  • 701: Account not found
  • 703: Invalid input (including invalid date ranges)
  • 704: Account type not supported
  • 705: Account is closed
  • 801: Transaction not found
Download OpenAPI description
Languages
Servers
Mock server
https://developer.meow.com/_mock/meow_api
Meow API Production
https://api.meow.com/v1
Meow API Sandbox
https://api.sandbox.meow.com/v1

Retrieve metadata about API keys and their accessible entities

Operations

Manage USDC contacts for cryptocurrency transfers

Operations

Access and manage financial accounts

Operations

View account transaction history and details

Operations

Check account balances and available funds

Operations

Request

Returns a list of balances for a specified account.

Security
apiKeyAuth(Required scopes:
accounts:balances
)
Path
account_idstring(Account Id)required

The ID of the account.

Query
startTimeStarttime (string) or Starttime (null)(Starttime)

Start time for filtering balances (ISO 8601 format). Also accepts 'start_date' for backwards compatibility.

Any of:

Start time for filtering balances (ISO 8601 format). Also accepts 'start_date' for backwards compatibility.

[ 0 .. 100 ] characters
string(Starttime)[ 0 .. 100 ] characters
endTimeEndtime (string) or Endtime (null)(Endtime)

End time for filtering balances (ISO 8601 format). Also accepts 'end_date' for backwards compatibility.

Any of:

End time for filtering balances (ISO 8601 format). Also accepts 'end_date' for backwards compatibility.

[ 0 .. 100 ] characters
string(Endtime)[ 0 .. 100 ] characters
Headers
x-entity-idstring(uuid)

Optional entity ID for scoped access to entity-specific data

curl -i -X GET \
  'https://developer.meow.com/_mock/meow_api/accounts/{account_id}/balances?startTime=string&endTime=string' \
  -H 'x-api-key: YOUR_API_KEY_HERE' \
  -H 'x-entity-id: 497f6eca-6276-4993-bfeb-53cbbbba6f08'

Responses

Successful Response

Bodyapplication/json
balancesArray of objects(Balances)required

An array of balances

balances[].​balancenumber(Balance)required

The balance amount

balances[].​datestring(date)(Date)required

The date of the balance

Response
application/json
{ "balances": [ {} ] }

Manage payment networks and routing information

Operations

Initiate ACH, wire, book, and USDC transfers, and retrieve transfer details

Operations

Validate routing numbers and get bank information

Operations

View and manage bills for vendor payments

Operations

Manage products and pricing for invoicing

Operations

Manage billing customers and their information

Operations

Create and manage invoices

Operations

Manage invoice line items

Operations

Configure available payment methods

Operations

Manage accounts for payment collection

Operations