Good APIs don’t
happen by chance.
They’re crafted.

Design, validate, and document your APIs in one focused
workspace. Catch breaking changes before your users do.

Open API Studio Explore the demo

No sign-up requiredOpenAPI 3.0 & 3.1Local-first prototype

FROM FIRST DRAFT TO YOUR NEXT RELEASEOne contract. A clearer picture. ↙

ApiCrafted / Atlas Commerce API Local workspace

Sample project

openapi.yaml YAML

1openapi: 3.1.0

2info:

3 title: Atlas Commerce API

4 description: A thoughtfully designed API for modern commerce.

5 version: 1.2.0

6servers:

7 - url: https://api.example.com/v1

8security:

9 - bearerAuth: []

10paths:

11 /customers:

12 get:

13 summary: List all customers

14 operationId: listCustomers

15 tags: [Customers]

16 parameters:

17 - name: limit

18 in: query

19 description: Maximum number of customers to return.

20 schema:

21 type: integer

22 default: 20

23 responses:

24 '200':

25 description: A list of customers

26 content:

27 application/json:

28 schema:

29 type: array

30 items:

31 $ref: '#/components/schemas/Customer'

32 example:

33 - id: cus_01

34 name: Alex Morgan

35 email: alex@example.com

36 post:

37 summary: Create a customer

38 operationId: createCustomer

39 tags: [Customers]

40 requestBody:

41 required: true

42 content:

43 application/json:

44 schema:

45 $ref: '#/components/schemas/CustomerInput'

46 responses:

47 '201':

48 description: Customer created

49 content:

50 application/json:

51 schema:

52 $ref: '#/components/schemas/Customer'

53 /customers/{customerId}:

54 parameters:

55 - name: customerId

56 in: path

57 required: true

58 schema:

59 type: string

60 get:

61 summary: Retrieve a customer

62 operationId: getCustomer

63 tags: [Customers]

64 responses:

65 '200':

66 description: Customer details

67 content:

68 application/json:

69 schema:

70 $ref: '#/components/schemas/Customer'

71 delete:

72 summary: Delete a customer

73 operationId: deleteCustomer

74 tags: [Customers]

75 responses:

76 '204':

77 description: Customer deleted

78 /orders:

79 get:

80 summary: List all orders

81 operationId: listOrders

82 tags: [Orders]

83 responses:

84 '200':

85 description: A list of orders

86 content:

87 application/json:

88 schema:

89 type: array

90 items:

91 $ref: '#/components/schemas/Order'

92components:

93 securitySchemes:

94 bearerAuth:

95 type: http

96 scheme: bearer

97 schemas:

98 Customer:

99 type: object

100 required: [id, name, email]

101 properties:

102 id:

103 type: string

104 example: cus_01

105 name:

106 type: string

107 example: Alex Morgan

108 email:

109 type: string

110 format: email

111 example: alex@example.com

112 CustomerInput:

113 type: object

114 required: [name, email]

115 properties:

116 name:

117 type: string

118 email:

119 type: string

120 format: email

121 Order:

122 type: object

123 properties:

124 id:

125 type: string

126 total:

127 type: number

128

OpenAPI 3.1.0UTF-8 Ln 1, Col 1

All changes stay in this browserOpenAPI 3.1 · REST

Built around the contract.
Not the complexity.

OpenAPI native

Real validation

Deterministic change detection

Your data stays local

A better contract.
At every step.

Less context switching. Fewer surprises.
One considered workflow for the entire API lifecycle.

Design

Give your API a solid foundation. Shape endpoints, schemas, and the details that matter.

Meet API Studio

Validate

Find the small mistakes before they become big problems. Get clear, actionable feedback.

Check a specification

Compare

Know exactly what a change means for your consumers. Make the next release with confidence.

Review contract changes

Document

Turn your source of truth into clear, searchable documentation that stays with your contract.

Preview your docs

A small change.
A big difference.
Know before you ship.

An endpoint removed. A field made required. A response changed. See what’s breaking, understand why, and give your consumers a smoother upgrade.

Explore change detection

Contract comparison Example review

v1.2.0proposed revision

DELETE /customers/{customerId}

required: [name, email, phone]

Breaking change

Existing requests could fail.

The new phone field is required. Consumers need to include it before adopting this contract.

Run this comparison

Atlas Commerce API REFERENCE

GET/customers

List all customers

Retrieve a list of customers.

200 Successful response

{
  "id": "cus_01",
  "name": "Alex Morgan",
  "email": "alex@example.com"
}

Your API deserves
to be understood.

Readable by humans. Grounded in your specification.
Preview the docs your consumers will actually use.

See documentation preview

Craft your next API
with a little more confidence.

Start with a sample. Bring your own specification. Make it better.

Let’s get crafting Free to explore. No account needed.