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BuiltWith Domain API

The Domain API from BuiltWith — 4 operation(s) for domain.

BuiltWith Domain API is one of 57 APIs that BuiltWith publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Domain. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

This API exposes 5 operations across 4 paths, and defines 8 schemas. It is described by OpenAPI 3.2.0, at version 2026-05-08.

Requests are made against a single base URL, https://api.builtwith.com.

5 operations 4 paths 8 schemas 3 GET2 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
2026-05-08
Base URL
https://api.builtwith.com/v22
Authentication
API Key, HTTP Bearer
Resource Areas
1

Authentication & Security 2

BuiltWith Domain API declares 2 security schemes for authenticating requests. An API key is passed in the query as KEY (ApiKeyQuery). It accepts HTTP bearer tokens (BearerAuth). By default, every request must be authenticated.

  • ApiKeyQuery — BuiltWith API key (KEY).
  • BearerAuth — BuiltWith API key or temporary bw- agent token in the Authorization header.

Paths & Operations 5

Across 4 paths, the API surfaces 5 operations — 3 GET, 2 POST. Each is listed below with its method, path, parameters, and response codes.

Domain 5
GET
/v22/api.json
Domain API (v22) - lookup
domain_lookup_v22 11 params → 200
POST
/v22/api.jsondeprecated
Domain API (v22) - legacy bulk lookup (POST)
domain_bulk_v22_legacy 6 params body → 200
POST
/v22/domain/bulk
Bulk Domain API - submit
domain_bulk_submit_v22 body → 200202
GET
/v22/domain/bulk/{job_id}
Bulk Domain API - poll status
domain_bulk_status_v22 1 param → 200
GET
/v22/domain/bulk/{job_id}/result
Bulk Domain API - retrieve results
domain_bulk_result_v22 1 param → 200

Schemas 8

The contract defines 8 schemas that model the data the API accepts and returns. The most detailed are TechnologyDetection (9 properties), DomainBulkJobResponse (7 properties), DomainPath (6 properties), DomainApiV22Result (4 properties). Each schema is shown below with its type and property counts.

DomainPath
object
6 properties
DomainApiV22ResultsItem
object
1 property 1 required
DomainBulkJobResponse
object
7 properties
DomainApiV22Response
object
1 property 1 required
TechnologyDetection
object
9 properties
DomainApiV22Result
object
4 properties
DomainBulkRequest
object
2 properties 1 required
SpendPoint
object
2 properties 2 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

builtwith-domain-api-openapi.yml Raw ↑

Other APIs BuiltWith publishes across the network.

BuiltWith Lists API
BuiltWith Trends API
BuiltWith Change API
BuiltWith Relationships API
BuiltWith Free API
BuiltWith Ask API
BuiltWith Live Feed API
BuiltWith Company to URL API
BuiltWith Tags API
BuiltWith Recommendations API
BuiltWith Keywords API
BuiltWith Keyword Search API
Where this information came from

This is an independent, third-party profile of BuiltWith Domain API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

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