Square

Square Invoices API

The Invoices API from Square — 7 operation(s) for invoices.

Documentation GitHub OpenAPI

Business capability

Accounts Receivable Management BC-200.30

Operations 10

Each operation below carries the questions people ask an LLM about it and the instructions they give an agent to run it. Generated by API Evangelist overlay

GET /v2/invoices List invoices for a location · Square List Invoices #

Ask an LLM

“How do I see all invoices issued from one of my locations?”

“Can I page through a location's invoices a few at a time?”

Tell an agent

List invoices for location {location_id}.

Show the first {limit} invoices at location {location_id}.

POST /v2/invoices Draft an invoice for an order · Square Create Invoice #

Ask an LLM

“How do I create an invoice for an order I already made?”

“Does a new invoice get sent right away or stay as a draft?”

Tell an agent

Create a draft invoice {invoice}.

Draft an invoice for this order: {invoice}.

POST /v2/invoices/search Search invoices by location and customer · Square Search Invoices #

Ask an LLM

“Which invoices have I sent to a particular customer?”

“Can I search invoices across a location with a customer filter?”

Tell an agent

Search invoices matching {query}.

Find up to {limit} invoices for the filter {query}.

DELETE /v2/invoices/{invoice_id} Delete a draft invoice · Square Delete Invoice #

Ask an LLM

“How do I throw away a draft invoice I no longer need?”

“Can a published invoice be deleted, or only drafts?”

Tell an agent destructive · confirm first

Delete draft invoice {invoice_id}.

Delete invoice {invoice_id} at version {version}.

GET /v2/invoices/{invoice_id} Get an invoice · Square Get Invoice #

Ask an LLM

“How do I look up one invoice and its payment status?”

“What details come back when I fetch an invoice by ID?”

Tell an agent

Get invoice {invoice_id}.

Show me the status and amounts of invoice {invoice_id}.

PUT /v2/invoices/{invoice_id} Edit an invoice · Square Update Invoice #

Ask an LLM

“How do I change the due date or recipient on an existing invoice?”

“Can I clear specific fields on an invoice without resending everything?”

Tell an agent

Update invoice {invoice_id} with {invoice}.

Clear fields {fields_to_clear} on invoice {invoice_id}.

POST /v2/invoices/{invoice_id}/attachments Attach a file to an invoice · Square Create Invoice Attachment #

Ask an LLM

“How do I attach a receipt or PDF to an invoice?”

“Can I upload an image file onto an existing invoice?”

Tell an agent

Attach {image_file} to invoice {invoice_id}.

Upload a file to invoice {invoice_id}.

DELETE /v2/invoices/{invoice_id}/attachments/{attachment_id} Remove an attachment from an invoice · Square Delete Invoice Attachment #

Ask an LLM

“How do I remove a file I attached to an invoice?”

“Which invoice states still allow attachments to be deleted?”

Tell an agent destructive · confirm first

Delete attachment {attachment_id} from invoice {invoice_id}.

Remove file {attachment_id} from invoice {invoice_id} permanently.

POST /v2/invoices/{invoice_id}/cancel Cancel a published invoice · Square Cancel Invoice #

Ask an LLM

“How do I stop collecting payment on an invoice I already sent?”

“Can a draft or paid invoice be canceled?”

Tell an agent destructive · confirm first

Cancel invoice {invoice_id} at version {version}.

Void the outstanding invoice {invoice_id}, version {version}.

POST /v2/invoices/{invoice_id}/publish Publish and send a draft invoice · Square Publish Invoice #

Ask an LLM

“How do I send a draft invoice to my customer?”

“What happens after an invoice is published, like emailing or charging a card on file?”

Tell an agent

Publish invoice {invoice_id} at version {version}.

Send draft invoice {invoice_id} (version {version}) to the customer.

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this

find_apisBrowse and filter every API in the catalog.
get_api_artifactsOne API's artifacts, grouped by type.
get_openapiThe primary OpenAPI for this API.
find_similar_apisAPIs that look like this one.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This API

curl "https://apis.io/api/v1/apis/square:square-invoices-api"

All apis

curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

openapi: 3.2.0
info:
  version: '2.0'
  title: Square Invoices API
  description: Supercharge Square for sellers of every size. Our entire connected commerce platform from elegant hardware to a rich suite of Square APIs is yours to build with. Whether youre developing an app or composing a bespoke solution, this is the place to make it happen.
  termsOfService: https://connect.squareup.com/tos
  contact:
    name: Square Developer Platform
    email: developers@squareup.com
    url: https://squareup.com/developers
  license:
    name: Apache 2.0
    url: http://www.apache.org/licenses/LICENSE-2.0.html
  externalDocs:
    description: 'Read the official documentation here:'
    url: https://docs.connect.squareup.com/
  x-server-configuration:
    default-environment: production
    default-server: default
    environments:
    - name: production
      servers:
      - name: default
        url: https://connect.squareup.com
    - name: sandbox
      servers:
      - name: default
        url: https://connect.squareupsandbox.com
    - name: custom
      servers:
      - name: default
        url: '{custom_url}'
    parameters:
    - name: custom_url
      description: Sets the base URL requests are made to. Defaults to `https://connect.squareup.com`
      type: string
      example: https://connect.squareup.com
  x-square-generic-error-codes:
  - ACCESS_TOKEN_EXPIRED
  - ACCESS_TOKEN_REVOKED
  - API_VERSION_INCOMPATIBLE
  - APPLICATION_DISABLED
  - ARRAY_EMPTY
  - ARRAY_LENGTH_TOO_LONG
  - ARRAY_LENGTH_TOO_SHORT
  - BAD_CERTIFICATE
  - BAD_GATEWAY
  - BAD_REQUEST
  - CONFLICT
  - CONFLICTING_PARAMETERS
  - CURRENCY_MISMATCH
  - EXPECTED_ARRAY
  - EXPECTED_BASE64_ENCODED_BYTE_ARRAY
  - EXPECTED_BOOLEAN
  - EXPECTED_FLOAT
  - EXPECTED_INTEGER
  - EXPECTED_JSON_BODY
  - EXPECTED_MAP
  - EXPECTED_OBJECT
  - EXPECTED_STRING
  - FORBIDDEN
  - GATEWAY_TIMEOUT
  - GONE
  - IDEMPOTENCY_KEY_REUSED
  - INCORRECT_TYPE
  - INSUFFICIENT_SCOPES
  - INTERNAL_SERVER_ERROR
  - INVALID_ARRAY_VALUE
  - INVALID_CONTENT_TYPE
  - INVALID_CURSOR
  - INVALID_ENUM_VALUE
  - INVALID_FORM_VALUE
  - INVALID_SORT_ORDER
  - INVALID_SQUARE_VERSION_FORMAT
  - INVALID_TIME
  - INVALID_TIME_RANGE
  - INVALID_VALUE
  - LOCATION_MISMATCH
  - MAP_KEY_LENGTH_TOO_LONG
  - MAP_KEY_LENGTH_TOO_SHORT
  - MERCHANT_SUBSCRIPTION_NOT_FOUND
  - METHOD_NOT_ALLOWED
  - MISSING_REQUIRED_PARAMETER
  - NOT_ACCEPTABLE
  - NOT_FOUND
  - NOT_IMPLEMENTED
  - NO_FIELDS_SET
  - RATE_LIMITED
  - REQUEST_ENTITY_TOO_LARGE
  - REQUEST_TIMEOUT
  - SANDBOX_NOT_SUPPORTED
  - SERVICE_UNAVAILABLE
  - TOO_MANY_MAP_ENTRIES
  - UNAUTHORIZED
  - UNEXPECTED_VALUE
  - UNKNOWN_BODY_PARAMETER
  - UNKNOWN_QUERY_PARAMETER
  - UNPROCESSABLE_ENTITY
  - UNSUPPORTED_MEDIA_TYPE
  - V1_ACCESS_TOKEN
  - V1_APPLICATION
  - VALUE_EMPTY
  - VALUE_REGEX_MISMATCH
  - VALUE_TOO_HIGH
  - VALUE_TOO_LONG
  - VALUE_TOO_LOW
  - VALUE_TOO_SHORT
servers:
- url: https://connect.squareup.com
  variables: {}
tags:


# --- truncated at 32 KB (162 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/square/refs/heads/main/openapi/square-invoices-api-openapi.yml

Square Invoices API

Operations 10

Documentation

Specifications

Schemas & Data

Work with this as data

MCP server

Tools for apis

Call it yourself

Get an API key

OpenAPI Specification