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POS workflow

Square

Payments API

In-person and online payments with invoicing, terminal integration, and inventory sync.

Endpoint

GET /v1/square

Starting price

Pay-as-you-go

Latency

130ms

Uptime

99.93%

4.4 (1,200 reviews)

Tech specs

Version

v2.0

Format

HTTPS + JSON

Supported SDKs

NodePythonRubyPHP

API detail dashboard

How it works

Open the detail page, review the integration components, test the request shape, and integrate it straight into your products.

Base URL

https://api.square.com

Auth

Bearer API key

Adoption options

Understand the free path before you talk to the provider

Free access

Sandbox

Test usage
Sandbox docs
Basic examples

Premium access

Volume based tier

Production capacity
Higher throughput
Priority support

Visit official provider Register for monitoring

Provider notes

Pricing tier: Pay-as-you-go
Includes Sandbox
Contact provider for large volume

Integration flow

What your team does next

Step 1

Review endpoints

Step 2

Generate your access key

Step 3

Send a test request

Step 4

Implement in production

Sample request

curl --request GET 'https://api.square.com/v1/example HTTP/1.1' \
  --header 'Accept: application/json' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data-raw 'Host: api.square.com
Accept: application/json'

Sample response

{
  "status": "success",
  "data": {}
}

Access model

Compare Payments API and decide how to adopt it

Shortlist this API first, then log in when you are ready to connect your own provider key.

Lead-gen marketplace flow

Starter

$79

public entry signal

Save 15%

For test mode, pilots, and low-traffic checkout flows.

50,000 transactions / month

Email support

Growth

$229

public entry signal

Save 20%

For production payment lanes and merchant operations.

300,000 transactions / month

Priority operations support

Scale

$599

public entry signal

Custom annual contract

For settlement-heavy teams and contract pricing.

Custom volume

Dedicated success manager

Shortlist status

Save this API if you want to compare it with other providers before connecting keys.

Connect your key Visit provider

What APIverse does

Compare

Cleaner docs, request/response examples, and shortlist-driven research across providers.

Connect

Bring your own provider credentials into one workspace when you are ready to test or ship.

Visit official source

Go to the official provider for signup, legal terms, billing, or partner-specific access requirements.

1200 reviews

Best for

POSCardsInventory

Supported regions

Global

Response highlights

statusdatatimestamprequest_id