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.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles BuiltWith the way a machine reads it — 85 machine-readable artifacts across 10 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — BuiltWith scores 53.8/100 (developing), with a separate agent-readiness read of 43/100 (agent native). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-10 · rubric v0.20.0
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</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile BuiltWith
Each block below is one kind of artifact we hold for BuiltWith. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 57
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
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.
Scroll within the panel for all 57 ·
Open Collections 9
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONBuiltWith Change Bulk Processing API
OPEN COLLECTIONBuiltWith Change Bulk Processing Domain Lookup API
OPEN COLLECTIONBuiltWith Change Bulk Processing Domain Relationships API
OPEN COLLECTIONBuiltWith Change Bulk Processing Free Lookup API
OPEN COLLECTIONBuiltWith Change Bulk Processing Tag Lookup API
OPEN COLLECTIONBuiltWith Change Bulk Processing Technology Changes API
OPEN COLLECTIONBuiltWith Change Bulk Processing Technology Lists API
OPEN COLLECTIONBuiltWith Change Bulk Processing Technology Trends API
OPEN COLLECTIONScroll within the panel for all 9 ·
MCP Servers 1
Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.
Model Context Protocol servers that expose these APIs to AI agents.
BuiltWith MCP Server
MCP SERVERPricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Builtwith Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Builtwith Finops
FINOPSEvent Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
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...
ASYNCAPISemantic Vocabularies 1
JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.
JSON-LD contexts and semantic vocabularies used across these APIs.
Builtwith Context
JSON-LDSpectral Rules 1
Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.
BuiltWith API Rules
SPECTRALJSON Schema 3
Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.
Standalone JSON Schema definitions for this provider's data models.
BuiltWith Change API Result
JSON SCHEMABuiltWith Domain API Result
JSON SCHEMABuiltWith Lists API Result
JSON SCHEMAExamples 4
Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.
Example request and response payloads for these APIs.
Builtwith Change Example
EXAMPLEBuiltwith Domain Example
EXAMPLEBuiltwith Lists Example
EXAMPLEBuiltwith Trends Example
EXAMPLESecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes are the vocabulary of least-privilege access. Profiling them shows exactly what an integration — or an agent acting on a user's behalf — is allowed to do.
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for BuiltWith — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 3
Portal, sign-up, and the first successful call
Documentation 6
Reference material describing how the API behaves
Agent Surfaces 6
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 11
Pagination, idempotency, versioning, errors, and events
Scroll within the panel for all 11 ·
Build 10
SDKs, sample code, and the tooling you integrate with
Scroll within the panel for all 10 ·
Access & Security 6
Authentication, authorization, and security posture
Operate 5
Status, limits, changes, and where to get help
Commercial 6
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 7
Properties that don't map to a standard resource type
Scroll within the panel for all 7 ·
← All providers · Data indexed from github.com/api-evangelist/builtwith · machine-readable index on apis.io
This is an independent, third-party profile of BuiltWith, 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
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you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.