BuiltWith

Technology profiling and lead generation platform with a REST API for detecting technologies used by websites, tracking technology trends, and identifying technology adoption across 491.9 million domains and 115,907 tracked web technologies.

BuiltWith publishes 52 APIs on the APIs.io network, including Domain API, Lists API, Trends API, and 49 more. Tagged areas include Technology Profiling, Lead Generation, Web Intelligence, Technology Detection, and Website Analysis.

The BuiltWith catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 1 Spectral governance ruleset.

BuiltWith’s developer surface includes authentication, documentation, engineering blog, pricing, CLI, code examples, API reference, and 56 more developer resources.

🌐 Visit website 📡 Source on GitHub

53.8/100 developing ▬ flat Agent 43/100 agent native open core · MIT Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serve⚡ Free to try

10 APIs 1 MCP Servers

Technology ProfilingLead Generation Web Intelligence Technology DetectionWebsite AnalysisMarket Research Technographics Sales Intelligence AI Agents MCP Agentic Commerce Real-Time Data

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 53.8/100 · developing

Contract Quality 14.0 / 20

Developer Ergonomics 10.6 / 16

Access Clarity 8.4 / 16

Operational Transparency 3.0 / 10

Contract Governance 4.1 / 10

Discoverability 6.1 / 8

Open Source Surface 2.5 / 10

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 43/100 · agent native

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 80 points between them, because the conditional facet above carries the other 20. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 80% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/builtwith: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 57

Individual APIs this provider publishes, each with its own machine-readable definition.

BuiltWith Domain API

Current and historical website technology information for single or multiple domains with support for JSON, XML, and CSV formats.

BuiltWith Lists API

Retrieve lists of websites using specific web technologies in XML, JSON, TXT, CSV, and TSV formats.

BuiltWith Trends API

Access technology trend data showing adoption and growth of web technologies over time.

BuiltWith Change API

Track technology additions and removals on websites with business context in JSON format.

BuiltWith Relationships API

Website interconnection data revealing domain relationships via shared IPs, analytics, and other attributes.

BuiltWith Free API

Free tier API providing technology group counts and last-updated timestamps for website domains.

BuiltWith Ask API

Natural language website lookups returning technology profile data in JSON and CSV formats.

BuiltWith Live Feed API

Real-time WebSocket feed of technology detections as they happen across the web.

BuiltWith Company to URL API

Resolve company names to their associated domain names in JSON and XML formats.

BuiltWith Tags API

Retrieve related domains associated with IPs and other website attributes.

BuiltWith Recommendations API

Get technology suggestions based on a website's existing technology profile.

BuiltWith Keywords API

Find websites that use specific keywords in their content.

BuiltWith Keyword Search API

Search websites by keyword content returning results in JSON and CSV formats.

BuiltWith Vector Search API

Text-based technology searches using vector embeddings for semantic similarity matching.

BuiltWith Redirects API

Access website redirect chain data to understand domain redirect patterns.

BuiltWith Product API

eCommerce product lookup for identifying products and merchants across the web.

BuiltWith Trust API

Website trustworthiness assessment providing reliability and safety scores for domains.

BuiltWith Financial API

Access financial data from SEC Edgar and UK Companies House filings for domains, including revenue, assets, and equity data.

BuiltWith Bulk Domain API

Batch domain processing for high-volume technology lookups across large domain lists.

BuiltWith MCP API

Model Context Protocol server integration enabling AI assistants to query BuiltWith technology detection data natively.

BuiltWith Bulk Processing API

Asynchronous batch domain processing

BuiltWith Domain Lookup API

Single or multi-domain technology detection endpoints

BuiltWith Domain Relationships API

Identify domain interconnections via shared identifiers

BuiltWith Free Lookup API

Technology count lookups for free tier

BuiltWith Tag Lookup API

Lookup domains by IP or attribute identifier

BuiltWith Technology Changes API

Track technology additions and removals on websites

BuiltWith Technology Lists API

Retrieve websites using specific technologies

BuiltWith Technology Trends API

Technology adoption trends and market share data

BuiltWith Agent Auth API

The AgentAuth API from BuiltWith — 2 operation(s) for agentauth.

BuiltWith Agent Payments API

The AgentPayments API from BuiltWith — 3 operation(s) for agentpayments.

BuiltWith Ask API

The Ask API from BuiltWith — 1 operation(s) for ask.

BuiltWith Change API

The Change API from BuiltWith — 1 operation(s) for change.

BuiltWith Company Research API

The Company Research API from BuiltWith — 4 operation(s) for company research.

BuiltWith Company To URL API

The CompanyToUrl API from BuiltWith — 1 operation(s) for companytourl.

BuiltWith Domain API

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

BuiltWith Domain Intelligence API

The Domain Intelligence API from BuiltWith — 2 operation(s) for domain intelligence.

BuiltWith Financial API

The Financial API from BuiltWith — 1 operation(s) for financial.

BuiltWith Free API

The Free API from BuiltWith — 1 operation(s) for free.

BuiltWith Keywords API

The Keywords API from BuiltWith — 1 operation(s) for keywords.

BuiltWith Keyword Search API

The KeywordSearch API from BuiltWith — 1 operation(s) for keywordsearch.

BuiltWith List Passes API

The List Passes API from BuiltWith — 2 operation(s) for list passes.

BuiltWith Lists API

The Lists API from BuiltWith — 1 operation(s) for lists.

BuiltWith Meta API

The Meta API from BuiltWith — 2 operation(s) for meta.

BuiltWith Mppx API

The Mppx API from BuiltWith — 3 operation(s) for mppx.

BuiltWith Product API

The Product API from BuiltWith — 1 operation(s) for product.

BuiltWith Recommendations API

The Recommendations API from BuiltWith — 1 operation(s) for recommendations.

BuiltWith Redirects API

The Redirects API from BuiltWith — 1 operation(s) for redirects.

BuiltWith Relationships API

The Relationships API from BuiltWith — 1 operation(s) for relationships.

BuiltWith Social API

The Social API from BuiltWith — 1 operation(s) for social.

BuiltWith Tags API

The Tags API from BuiltWith — 1 operation(s) for tags.

BuiltWith Technology Discovery API

The Technology Discovery API from BuiltWith — 1 operation(s) for technology discovery.

BuiltWith Technology Intelligence API

The Technology Intelligence API from BuiltWith — 3 operation(s) for technology intelligence.

BuiltWith Trends API

The Trends API from BuiltWith — 1 operation(s) for trends.

BuiltWith Trust and Risk API

The Trust and Risk API from BuiltWith — 1 operation(s) for trust and risk.

BuiltWith Trust API

The Trust API from BuiltWith — 1 operation(s) for trust.

BuiltWith Vector API

The Vector API from BuiltWith — 1 operation(s) for vector.

BuiltWith Website Search API

The Website Search API from BuiltWith — 1 operation(s) for website search.

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Open Collections 9

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

BuiltWith Change Bulk Processing API

OPEN COLLECTION

BuiltWith Change Bulk Processing Domain Lookup API

OPEN COLLECTION

BuiltWith Change Bulk Processing Domain Relationships API

OPEN COLLECTION

BuiltWith Change Bulk Processing Free Lookup API

OPEN COLLECTION

BuiltWith Change Bulk Processing Tag Lookup API

OPEN COLLECTION

BuiltWith Change Bulk Processing Technology Changes API

OPEN COLLECTION

BuiltWith Change Bulk Processing Technology Lists API

OPEN COLLECTION

BuiltWith Change Bulk Processing Technology Trends API

OPEN COLLECTION

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MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

BuiltWith MCP Server

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Builtwith Plans Pricing

6 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Builtwith Rate Limits

0 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Builtwith Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

BuiltWith Live Feed API

Real-time technology detection notifications over WebSocket. Subscribe to technology channels or rule channels and receive an event each time BuiltWith detects a technology on a...

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Builtwith Context

10 classes · 52 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

BuiltWith API Rules

6 rules · 4 warnings 2 info

SPECTRAL

JSON Schema 3

Standalone JSON Schema definitions for this provider's data models.

BuiltWith Change API Result

1 properties

JSON SCHEMA

BuiltWith Domain API Result

1 properties

JSON SCHEMA

BuiltWith Lists API Result

2 properties

JSON SCHEMA

Examples 4

Example request and response payloads for these APIs.

Builtwith Change Example

1 fields

EXAMPLE

Builtwith Domain Example

1 fields

EXAMPLE

Builtwith Lists Example

2 fields

EXAMPLE

Builtwith Trends Example

1 fields

EXAMPLE

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Builtwith Authentication

apiKey/http/oauth2 · 5 schemes

SECURITY

Builtwith Domain Security

TLSv1.2 · HSTS · DNSSEC · DMARC

SECURITY

Builtwith Vulnerability Disclosure

Hackerone · security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Builtwith Scopes

2 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Builtwith Agentic Access

20 operations · 1 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Login

Documentation 6

Reference material describing how the API behaves

Documentation

AsyncAPI

JSONSchema

JSONSchema

JSONSchema

APIReference

Agent Surfaces 6

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

AgenticAccess

MCPServer

LLMsTxt

WellKnown

AgentSkill

Design & Contract 11

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

ErrorCatalog

ErrorCodes

Lifecycle

Conformance

DataModel

Components

Vocabulary

JSONLDContext

SpectralRules

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Build 10

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace

ToolCrosswalk

Packages

SDKs

CLI

Examples

Examples

Examples

Examples

GitHubOrganization

GitHubOrganization

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Access & Security 6

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

Authentication

SecurityTxt

Security

OAuthScopes

Operate 5

Status, limits, changes, and where to get help

IssueTracker

Releases

RateLimits

Support

SupportFAQs

Commercial 6

Pricing, plans, and the legal terms of use

License

Pricing

Plans

FinOps

TermsOfService

PrivacyPolicy

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 7

Properties that don't map to a standard resource type

CapabilityMap

KnowledgeBase

AgentCard

APICatalog

Overlay

Overlay

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Source (apis.yml)

aid: builtwith
name: BuiltWith
description: Technology profiling and lead generation platform with a REST API for detecting technologies used by websites,
  tracking technology trends, and identifying technology adoption across 491.9 million domains and 115,907 tracked web technologies.
type: Index
deliveryModel:
  model: open-core
  license: MIT
  open_source: true
  commercial: true
  callable_host: true
  label: Open core · an OSS project plus a commercial hosted product
  confidence: high
  source:
  - license
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/builtwith.png
url: https://raw.githubusercontent.com/api-evangelist/builtwith/refs/heads/main/apis.yml
created: 2026-06-13
modified: 2026-08-14
specificationVersion: '0.23'
tags:
- Technology Profiling
- Lead Generation
- Web Intelligence
- Technology Detection
- Website Analysis
- Market Research
- Technographics
- Sales Intelligence
- AI Agents
- MCP
- Agentic Commerce
- Real-Time Data
tags_raw:
- Technology Profiling
- Lead Generation
- Web Intelligence
- Technology Detection
- Website Analysis
- Market Research
- Technographics
- Sales Intelligence
- AI Agents
- Model Context Protocol
- Agentic Commerce
- Real-time Data
apis:
- name: BuiltWith Domain API
  description: Current and historical website technology information for single or multiple domains with support for JSON,
    XML, and CSV formats.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Domain Lookup
  - Technology Detection
  - Historical Data
  properties:
  - type: Documentation
    url: https://api.builtwith.com/domain-api
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith Lists API
  description: Retrieve lists of websites using specific web technologies in XML, JSON, TXT, CSV, and TSV formats.
  humanURL: https://api.builtwith.com/lists-api
  baseURL: https://api.builtwith.com/lists12
  tags:
  - Technology Lists
  - Lead Generation
  - Website Lists
  properties:
  - type: Documentation
    url: https://api.builtwith.com/lists-api
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith Trends API
  description: Access technology trend data showing adoption and growth of web technologies over time.
  humanURL: https://api.builtwith.com/trends-api
  baseURL: https://api.builtwith.com/trends/v6
  tags:
  - Technology Trends
  - Market Intelligence
  - Adoption Data
  properties:
  - type: Documentation
    url: https://api.builtwith.com/trends-api
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith Change API
  description: Track technology additions and removals on websites with business context in JSON format.
  humanURL: https://api.builtwith.com/change-api
  baseURL: https://api.builtwith.com/change1
  tags:
  - Technology Changes
  - Business Intelligence
  - Signals
  properties:
  - type: Documentation
    url: https://api.builtwith.com/change-api
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith Relationships API
  description: Website interconnection data revealing domain relationships via shared IPs, analytics, and other attributes.
  humanURL: https://api.builtwith.com/relationships-api
  baseURL: https://api.builtwith.com/rv4
  tags:
  - Domain Relationships
  - Web Graph
  - Interconnections
  properties:
  - type: Documentation
    url: https://api.builtwith.com/relationships-api
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith Free API
  description: Free tier API providing technology group counts and last-updated timestamps for website domains.
  humanURL: https://api.builtwith.com/free-api
  baseURL: https://api.builtwith.com/free1
  tags:
  - Free Tier
  - Technology Counts
  - Domain Lookup
  properties:
  - type: Documentation
    url: https://api.builtwith.com/free-api
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith Ask API
  description: Natural language website lookups returning technology profile data in JSON and CSV formats.
  humanURL: https://api.builtwith.com/ask-api
  baseURL: https://api.builtwith.com/ask1
  tags:
  - Natural-Language
  - Artificial Intelligence
  - Domain Lookup
  tags_raw:
  - Natural Language
  - AI
  - Domain Lookup
  properties:
  - type: Documentation
    url: https://api.builtwith.com/ask-api
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith Live Feed API
  description: Real-time WebSocket feed of technology detections as they happen across the web.
  humanURL: https://api.builtwith.com/live-feed-api
  baseURL: wss://sync.builtwith.com/wss/
  tags:
  - Real-Time
  - WebSocket
  - Streaming
  tags_raw:
  - Real-time
  - WebSocket
  - Streaming
  properties:
  - type: Documentation
    url: https://api.builtwith.com/live-feed-api
  - type: AsyncAPI
    url: asyncapi/builtwith-live-feed-asyncapi.yml
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith Company to URL API
  description: Resolve company names to their associated domain names in JSON and XML formats.
  humanURL: https://api.builtwith.com/company-to-url
  baseURL: https://api.builtwith.com/ctu3
  tags:
  - Company Lookup
  - Domain Resolution
  - Lead Generation
  properties:
  - type: Documentation
    url: https://api.builtwith.com/company-to-url
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith Tags API
  description: Retrieve related domains associated with IPs and other website attributes.
  humanURL: https://api.builtwith.com/tags-api
  baseURL: https://api.builtwith.com/tag1
  tags:
  - IP Lookup
  - Domain Tags
  - Attribution
  properties:
  - type: Documentation
    url: https://api.builtwith.com/tags-api
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith Recommendations API
  description: Get technology suggestions based on a website's existing technology profile.
  humanURL: https://api.builtwith.com/recommendations-api
  baseURL: https://api.builtwith.com/rec1
  tags:
  - Recommendations
  - Technology Suggestions
  - Intelligence
  properties:
  - type: Documentation
    url: https://api.builtwith.com/recommendations-api
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith Keywords API
  description: Find websites that use specific keywords in their content.
  humanURL: https://api.builtwith.com/keywords-api
  baseURL: https://api.builtwith.com/kw2
  tags:
  - Keyword Search
  - Content Intelligence
  - Lead Generation
  properties:
  - type: Documentation
    url: https://api.builtwith.com/keywords-api
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith Keyword Search API
  description: Search websites by keyword content returning results in JSON and CSV formats.
  humanURL: https://api.builtwith.com/keyword-search-api
  baseURL: https://api.builtwith.com/kws1
  tags:
  - Keyword Search
  - Content Discovery
  - Lead Generation
  properties:
  - type: Documentation
    url: https://api.builtwith.com/keyword-search-api
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith Vector Search API
  description: Text-based technology searches using vector embeddings for semantic similarity matching.
  humanURL: https://api.builtwith.com/vector-search-api
  baseURL: https://api.builtwith.com/vector/v1
  tags:
  - Vector Search
  - Artificial Intelligence
  - Semantic Search
  tags_raw:
  - Vector Search
  - AI
  - Semantic Search
  properties:
  - type: Documentation
    url: https://api.builtwith.com/vector-search-api
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith Redirects API
  description: Access website redirect chain data to understand domain redirect patterns.
  humanURL: https://api.builtwith.com/redirects-api
  baseURL: https://api.builtwith.com/redirect1
  tags:
  - Redirects
  - Domain Intelligence
  - Website Data
  properties:
  - type: Documentation
    url: https://api.builtwith.com/redirects-api
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith Product API
  description: eCommerce product lookup for identifying products and merchants across the web.
  humanURL: https://api.builtwith.com/product-api
  baseURL: https://api.builtwith.com/productv1
  tags:
  - E-Commerce
  - Product Intelligence
  - Retail
  tags_raw:
  - eCommerce
  - Product Intelligence
  - Retail
  properties:
  - type: Documentation
    url: https://api.builtwith.com/product-api
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith Trust API
  description: Website trustworthiness assessment providing reliability and safety scores for domains.
  humanURL: https://api.builtwith.com/trust-api
  baseURL: https://api.builtwith.com/trustv1
  tags:
  - Trust Score
  - Safety
  - Domain Intelligence
  properties:
  - type: Documentation
    url: https://api.builtwith.com/trust-api
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith Financial API
  description: Access financial data from SEC Edgar and UK Companies House filings for domains, including revenue, assets,
    and equity data.
  humanURL: https://api.builtwith.com/financial-api
  baseURL: https://api.builtwith.com/financial1
  tags:
  - Financial Data
  - SEC Filings
  - Companies House
  - Business Intelligence
  properties:
  - type: Documentation
    url: https://api.builtwith.com/financial-api
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith Bulk Domain API
  description: Batch domain processing for high-volume technology lookups across large domain lists.
  humanURL: https://api.builtwith.com/bulk-domain-api
  baseURL: https://api.builtwith.com/v22/domain
  tags:
  - Bulk Processing
  - Batch API
  - High Volume
  properties:
  - type: Documentation
    url: https://api.builtwith.com/bulk-domain-api
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- name: BuiltWith MCP API
  description: Model Context Protocol server integration enabling AI assistants to query BuiltWith technology detection data
    natively.
  humanURL: https://api.builtwith.com/mcp-api
  baseURL: https://api.builtwith.com/mcp
  tags:
  - MCP
  - AI Integration
  tags_raw:
  - MCP
  - AI Integration
  - Model Context Protocol
  properties:
  - type: Documentation
    url: https://api.builtwith.com/mcp-api
  - type: GitHubRepository
    url: https://github.com/builtwith/builtwith-mcp
  - type: MCPServer
    url: mcp/builtwith-mcp.yml
  - type: ToolCrosswalk
    url: mcp/builtwith-tool-crosswalk.yml
  contact:
  - FN: BuiltWith Support
    url: https://builtwith.com/contact
- aid: builtwith:builtwith-bulk-processing-api
  name: BuiltWith Bulk Processing API
  description: Asynchronous batch domain processing
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Bulk Processing
  properties:
  - type: OpenAPI
    url: openapi/builtwith-bulk-processing-api-openapi.yml
- aid: builtwith:builtwith-domain-lookup-api
  name: BuiltWith Domain Lookup API
  description: Single or multi-domain technology detection endpoints
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Domain Lookup
  properties:
  - type: OpenAPI
    url: openapi/builtwith-domain-lookup-api-openapi.yml
- aid: builtwith:builtwith-domain-relationships-api
  name: BuiltWith Domain Relationships API
  description: Identify domain interconnections via shared identifiers
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Domain Relationships
  properties:
  - type: OpenAPI
    url: openapi/builtwith-domain-relationships-api-openapi.yml
- aid: builtwith:builtwith-free-lookup-api
  name: BuiltWith Free Lookup API
  description: Technology count lookups for free tier
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Free Lookup
  properties:
  - type: OpenAPI
    url: openapi/builtwith-free-lookup-api-openapi.yml
- aid: builtwith:builtwith-tag-lookup-api
  name: BuiltWith Tag Lookup API
  description: Lookup domains by IP or attribute identifier
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Tag Lookup
  properties:
  - type: OpenAPI
    url: openapi/builtwith-tag-lookup-api-openapi.yml
- aid: builtwith:builtwith-technology-changes-api
  name: BuiltWith Technology Changes API
  description: Track technology additions and removals on websites
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Technology Changes
  properties:
  - type: OpenAPI
    url: openapi/builtwith-technology-changes-api-openapi.yml
- aid: builtwith:builtwith-technology-lists-api
  name: BuiltWith Technology Lists API
  description: Retrieve websites using specific technologies
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Technology Lists
  properties:
  - type: OpenAPI
    url: openapi/builtwith-technology-lists-api-openapi.yml
- aid: builtwith:builtwith-technology-trends-api
  name: BuiltWith Technology Trends API
  description: Technology adoption trends and market share data
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Technology Trends
  properties:
  - type: OpenAPI
    url: openapi/builtwith-technology-trends-api-openapi.yml
- aid: builtwith:builtwith-agentauth-api
  name: BuiltWith Agent Auth API
  description: The AgentAuth API from BuiltWith — 2 operation(s) for agentauth.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Agent Auth
  tags_raw:
  - AgentAuth
  properties:
  - type: OpenAPI
    url: openapi/builtwith-agentauth-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-agentpayments-api
  name: BuiltWith Agent Payments API
  description: The AgentPayments API from BuiltWith — 3 operation(s) for agentpayments.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Agent Payments
  tags_raw:
  - AgentPayments
  properties:
  - type: OpenAPI
    url: openapi/builtwith-agentpayments-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-ask-api
  name: BuiltWith Ask API
  description: The Ask API from BuiltWith — 1 operation(s) for ask.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Ask
  properties:
  - type: OpenAPI
    url: openapi/builtwith-ask-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-change-api
  name: BuiltWith Change API
  description: The Change API from BuiltWith — 1 operation(s) for change.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Change
  properties:
  - type: OpenAPI
    url: openapi/builtwith-change-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-company-research-api
  name: BuiltWith Company Research API
  description: The Company Research API from BuiltWith — 4 operation(s) for company research.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Company Research
  properties:
  - type: OpenAPI
    url: openapi/builtwith-company-research-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-companytourl-api
  name: BuiltWith Company To URL API
  description: The CompanyToUrl API from BuiltWith — 1 operation(s) for companytourl.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - CompanyToUrl
  properties:
  - type: OpenAPI
    url: openapi/builtwith-companytourl-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-domain-api
  name: BuiltWith Domain API
  description: The Domain API from BuiltWith — 4 operation(s) for domain.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Domain
  properties:
  - type: OpenAPI
    url: openapi/builtwith-domain-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-domain-intelligence-api
  name: BuiltWith Domain Intelligence API
  description: The Domain Intelligence API from BuiltWith — 2 operation(s) for domain intelligence.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Domain Intelligence
  properties:
  - type: OpenAPI
    url: openapi/builtwith-domain-intelligence-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-financial-api
  name: BuiltWith Financial API
  description: The Financial API from BuiltWith — 1 operation(s) for financial.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Financial
  properties:
  - type: OpenAPI
    url: openapi/builtwith-financial-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-free-api
  name: BuiltWith Free API
  description: The Free API from BuiltWith — 1 operation(s) for free.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Free
  properties:
  - type: OpenAPI
    url: openapi/builtwith-free-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-keywords-api
  name: BuiltWith Keywords API
  description: The Keywords API from BuiltWith — 1 operation(s) for keywords.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Keywords
  properties:
  - type: OpenAPI
    url: openapi/builtwith-keywords-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-keywordsearch-api
  name: BuiltWith Keyword Search API
  description: The KeywordSearch API from BuiltWith — 1 operation(s) for keywordsearch.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Keyword Search
  tags_raw:
  - KeywordSearch
  properties:
  - type: OpenAPI
    url: openapi/builtwith-keywordsearch-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-list-passes-api
  name: BuiltWith List Passes API
  description: The List Passes API from BuiltWith — 2 operation(s) for list passes.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - List Passes
  properties:
  - type: OpenAPI
    url: openapi/builtwith-list-passes-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-lists-api
  name: BuiltWith Lists API
  description: The Lists API from BuiltWith — 1 operation(s) for lists.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - List
  tags_raw:
  - Lists
  properties:
  - type: OpenAPI
    url: openapi/builtwith-lists-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-meta-api
  name: BuiltWith Meta API
  description: The Meta API from BuiltWith — 2 operation(s) for meta.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Meta
  properties:
  - type: OpenAPI
    url: openapi/builtwith-meta-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-mppx-api
  name: BuiltWith Mppx API
  description: The Mppx API from BuiltWith — 3 operation(s) for mppx.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Mppx
  properties:
  - type: OpenAPI
    url: openapi/builtwith-mppx-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-product-api
  name: BuiltWith Product API
  description: The Product API from BuiltWith — 1 operation(s) for product.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Product
  properties:
  - type: OpenAPI
    url: openapi/builtwith-product-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-recommendations-api
  name: BuiltWith Recommendations API
  description: The Recommendations API from BuiltWith — 1 operation(s) for recommendations.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Recommendations
  properties:
  - type: OpenAPI
    url: openapi/builtwith-recommendations-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-redirects-api
  name: BuiltWith Redirects API
  description: The Redirects API from BuiltWith — 1 operation(s) for redirects.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Redirects
  properties:
  - type: OpenAPI
    url: openapi/builtwith-redirects-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-relationships-api
  name: BuiltWith Relationships API
  description: The Relationships API from BuiltWith — 1 operation(s) for relationships.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Relationships
  properties:
  - type: OpenAPI
    url: openapi/builtwith-relationships-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-social-api
  name: BuiltWith Social API
  description: The Social API from BuiltWith — 1 operation(s) for social.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Social
  properties:
  - type: OpenAPI
    url: openapi/builtwith-social-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-tags-api
  name: BuiltWith Tags API
  description: The Tags API from BuiltWith — 1 operation(s) for tags.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Tags
  properties:
  - type: OpenAPI
    url: openapi/builtwith-tags-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-technology-discovery-api
  name: BuiltWith Technology Discovery API
  description: The Technology Discovery API from BuiltWith — 1 operation(s) for technology discovery.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Technology Discovery
  properties:
  - type: OpenAPI
    url: openapi/builtwith-technology-discovery-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-technology-intelligence-api
  name: BuiltWith Technology Intelligence API
  description: The Technology Intelligence API from BuiltWith — 3 operation(s) for technology intelligence.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Technology Intelligence
  properties:
  - type: OpenAPI
    url: openapi/builtwith-technology-intelligence-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-trends-api
  name: BuiltWith Trends API
  description: The Trends API from BuiltWith — 1 operation(s) for trends.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Trends
  properties:
  - type: OpenAPI
    url: openapi/builtwith-trends-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-trust-and-risk-api
  name: BuiltWith Trust and Risk API
  description: The Trust and Risk API from BuiltWith — 1 operation(s) for trust and risk.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Trust and Risk
  properties:
  - type: OpenAPI
    url: openapi/builtwith-trust-and-risk-api-openapi.yml
  - type: Documentation
    url: https://api.builtwith.com/agent-payment-api
  - type: Idempotency
    url: conventions/builtwith-conventions.yml
  - type: Documentation
    url: https://api.builtwith.com/
  - type: APIReference
    url: https://api.builtwith.com/domain-api
  - type: Documentation
    url: https://api.builtwith.com/x402-api
- aid: builtwith:builtwith-trust-api
  name: BuiltWith Trust API
  description: The Trust API from BuiltWith — 1 operation(s) for trust.
  humanURL: https://api.builtwith.com/domain-api
  baseURL: https://api.builtwith.com/v22
  tags:
  - Trust
  properties:
  - type: OpenAPI

# --- truncated at 32 KB (38 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/builtwith/refs/heads/main/apis.yml

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