How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

BuiltWith Domain Lookup API

Single or multi-domain technology detection endpoints

BuiltWith Domain Lookup 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 Lookup. The published artifact set on APIs.io includes an OpenAPI specification.

This API exposes 3 operations across 3 paths, and defines 9 schemas. It is described by OpenAPI 3.2.0, at version change1.

Requests are made against a single base URL, https://api.builtwith.com/change1.

3 operations 3 paths 9 schemas 3 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
change1
Base URL
https://api.builtwith.com/v22
Authentication
API Key, API Key
License
Terms of Service
Resource Areas
1

Authentication & Security 2

BuiltWith Domain Lookup API declares 2 security schemes for authenticating requests. An API key is passed in the query as KEY (apiKeyQuery). An API key is passed in the header as Authorization (apiKeyHeader). By default, every request must be authenticated.

  • apiKeyHeader — Format: 'Authorization: API {key}'

Paths & Operations 3

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

Domain Lookup 3

Single or multi-domain technology detection endpoints

GET
/api.json
Lookup domain technologies (JSON)
getDomainTechnologiesJson 11 params → 200400401429
GET
/api.xml
Lookup domain technologies (XML)
getDomainTechnologiesXml 9 params → 200400401
GET
/api.csv
Lookup domain technologies (CSV)
getDomainTechnologiesCsv 6 params → 200

Schemas 9

The contract defines 9 schemas that model the data the API accepts and returns. The most detailed are DomainMeta (9 properties), Technology (9 properties), Result (3 properties), Attribute (2 properties). Each schema is shown below with its type and property counts.

Result
object
3 properties
Technology
object
A detected web technology
9 properties
DomainMeta
object
Company and domain metadata
9 properties
DomainResult
object
Top-level response wrapper for domain technology lookups
1 property
DomainResultItem
object
1 property
TechCategory
object
1 property
Attribute
object
Additional attribute data for a technology
2 properties
Path
object
2 properties
ErrorResponse
object
1 property

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

builtwith-domain-lookup-api-openapi.yml Raw ↑

Other APIs BuiltWith publishes across the network.

BuiltWith Domain API
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
Where this information came from

This is an independent, third-party profile of BuiltWith Domain Lookup 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.

info@apievangelist.com · Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.