# Services from api.builtwith.com on Zero

> api.builtwith.com serves 14 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/api.builtwith.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.builtwith.com/health.json

## Services

- [BuiltWith Domain Technology Lookup](https://www.zero.xyz/c/builtwith-domain-technology-lookup-42ce933c/llms.txt): $0.0495/call via x402. Returns technology stack detections and metadata for a given domain, including frameworks, analytics, hosting, CMS, and other tools detected on the site.
- [BuiltWith Technology Search](https://www.zero.xyz/c/builtwith-technology-search-7f2cdadf/llms.txt): $0.0495/call via x402. Search for websites using specific technologies using a natural-language query against BuiltWith's web technology database
- [BuiltWith Agent Ask](https://www.zero.xyz/c/builtwith-agent-ask-293a2038/llms.txt): $0.0495/call via x402. Accepts a natural-language query to find websites that use specific technologies, returning a list of matching domains with BuiltWith tech-stack data
- [BuiltWith Company Domains Lookup](https://www.zero.xyz/c/builtwith-company-domains-lookup-1bcd40cb/llms.txt): $0.0495/call via x402. Given a company or brand name, returns the web domains associated with that company using BuiltWith's technology intelligence database.
- [BuiltWith Keywords API](https://www.zero.xyz/c/builtwith-keywords-api-337c65ce/llms.txt): $0.0495/call via x402. Returns keyword and tag metadata associated with technologies detected on a given domain
- [BuiltWith Agent Recommendations](https://www.zero.xyz/c/builtwith-agent-recommendations-6e984072/llms.txt): $0.0495/call via x402. Returns technology stack and vendor recommendations for a given domain by analyzing what technologies the site is built with
- [BuiltWith Technology Change Detection](https://www.zero.xyz/c/builtwith-technology-change-detection-3f0e2b27/llms.txt): $0.0495/call via x402. Detects technology stack changes on a domain over time, reporting what was added or removed
- [BuiltWith Relationships API](https://www.zero.xyz/c/builtwith-relationships-api-d800be30/llms.txt): $0.0495/call via x402. Returns relationship and network data for a given domain, revealing connected domains and technology ownership patterns
- [BuiltWith Domain Trust Lookup](https://www.zero.xyz/c/builtwith-domain-trust-lookup-e908900d/llms.txt): $0.0495/call via x402. Looks up trust and technology intelligence for a given domain name using the BuiltWith API
- [BuiltWith Company Identifiers API](https://www.zero.xyz/c/builtwith-company-identifiers-api-15cffa69/llms.txt): $0.0495/call via x402. Returns company identifier data (social profiles, company IDs, and related metadata) for a given domain using BuiltWith's technology intelligence database
- [BuiltWith Pro API Pass](https://www.zero.xyz/c/builtwith-pro-api-pass-801509e2/llms.txt): $495/call via x402. Purchases a Pro-tier API access pass for BuiltWith, returning a one-time pass token with report limits for keyword and technology lookups
- [BuiltWith API Basic List-Pass Purchase](https://www.zero.xyz/c/builtwith-api-basic-list-pass-purchase-4201de14/llms.txt): $295/call via x402. Purchases a time-limited 'basic' access pass token for the BuiltWith List API, enabling keyword and technology report queries
- [BuiltWith Tags Lookup API](https://www.zero.xyz/c/builtwith-tags-lookup-api-30d818d6/llms.txt): $0.0495/call via x402. Looks up websites or IPs associated with a specific BuiltWith tag or technology attribute
- [BuiltWith Redirects API](https://www.zero.xyz/c/builtwith-redirects-api-6cd0bb2e/llms.txt): $0.0495/call via x402. Returns redirect chain data for a given domain, showing where it redirects to or from

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)