- Visibility23
- Citations2
- Sentiment94
- Site quality80
- AI readiness36
AI assistants name Builders FirstSource in 15% of answers, which is three times more often than the typical company in its sector. The company has an overall score of 43 out of 100, ranking 196th of 2,047 companies. Its website passes 5 out of 14 technical checks for AI tool readiness.
We asked 15 unbranded questions about the industrial market: none named Builders FirstSource. AI assistants named it in 9 of 60 answers (15.0%). The typical industrial company is named in 5.0% of answers. By how often it is named, Builders FirstSource ranks 51 of 246 in its sector.
Every dot is a company in the study. Hover one to see it; click to open its report.
This companySame sectorEvery other companyNever named
Five parts, each scored out of 100.
How often AI assistants name the company
How often AI uses the company's own website as a source
How positively AI describes the company
How well built the website's own pages are
How easily AI tools can read and use the website
Visibility is calculated from the answers on this page. How the score is built.
246 companies in this sector. The line on each bar is the typical company.
An answer that names the company
“What are the best building material suppliers for large-scale residential construction projects in the US?”
I'll search for information about the best building material suppliers for large-scale residential construction in the US.Based on the search results, here are the best building material suppliers for large-scale residential construction projects in the US:
Top Suppliers for Large-Scale Projects
Builders FirstSource (BFS)
Builders FirstSource is the nation's largest supplier of structural building products and value-added components, catering to the professional market for both new residential construction and remodeling. BFS combines national scale with off-site manufacturing of trus …
The AI’s answer as we received it, shortened and not checked for accuracy.
How the mentions in these answers were split between this company and its rivals
Answers naming it, out of answers received
What this website publishes for an AI agent to read, use and buy from, on a scale of six levels.
- 0
- 1
- 2
- 3
- 4
- 5
Level 1: Basic web presence. Two of robots.txt, a sitemap and Link headers are in place.
- Content Signals
Show every check, for your technical teamHide the checks
- study: 92.0%robots.txtPassed
A valid robots.txt with crawl rules at the site root.
- study: 86.8%SitemapPassed
An XML sitemap listing the pages, ideally referenced from robots.txt.
- study: 0.3%Link headersNot met
Send Link headers such as rel="api-catalog" or rel="describedby" on the homepage.
- study: 5.5%DNS for AI DiscoveryNot present
Advertise agent endpoints with SVCB records under _agents.
- study: 1.9%Markdown negotiationNot met
Return a markdown version when asked with Accept: text/markdown, for example at the CDN.
- study: 25.1%llms.txtPassed
An llms.txt that tells language models what the site offers.
- study: 93.4%AI bot rulesPassed
Explicit robots.txt rules for AI crawlers such as GPTBot, ClaudeBot and PerplexityBot.
- study: 1.4%Content SignalsNot met
Add a Content-Signal line for search, ai-input and ai-train to robots.txt.
- study: 0.2%Web Bot AuthNot present
Only relevant if you run your own agents or crawlers: publish a signing key directory.
- study: 0.3%API CatalogNot met
List public APIs in a linkset at /.well-known/api-catalog.
- study: 11.8%OAuth discoveryNot met
Publish OpenID Connect or OAuth server metadata under /.well-known.
- study: 10.3%OAuth Protected ResourceNot met
Serve protected resource metadata at /.well-known/oauth-protected-resource.
- study: 0.0%auth.mdNot met
Publish an auth.md describing how agents sign in.
- study: 0.2%MCP Server CardNot met
Offer an MCP server and publish its server card under /.well-known.
- study: 0.1%A2A Agent CardNot met
Publish an agent card at /.well-known/agent-card.json.
- study: 0.2%Agent SkillsNot met
Publish a skills index with the main tasks agents can do.
- study: 33.7%WebMCPCould not check
Register key actions such as search or cart as WebMCP tools.
- study: 0.1%ARD manifestNot met
Publish an ai-catalog.json listing every agent interface.
Score 43 of 100 · 97% of checks could run · checked on October 5, 2026 · www.bldr.com · 2,047 companies scanned
5 of 14 passed. This list is for your technical team. The percentage is how many companies in the study pass each check.
These 14 checks ran during the audit and are what the AI readiness part of the overall score counts. The scan above ran later and is stricter on Link headers and Markdown, so a check can pass here and not there.
Show the 14 checksHide them
- Passedrobots.txt publishedstudy: 85.0%
- PassedXML sitemapstudy: 73.2%
- Not metHTTP Link headers (RFC 8288)study: 29.0%
- Not metMarkdown content negotiationstudy: 8.3%
- Passedllms.txt publishedstudy: 21.7%
- PassedToken budget (page weight)study: 95.2%
- PassedExplicit AI bot rulesstudy: 13.0%
- Not metAPI Catalog (.well-known/api-catalog)study: 0.2%
- Not metOAuth Authorization Server discoverystudy: 10.1%
- Not metOAuth Protected Resource discoverystudy: 9.3%
- Not metMCP Server Cardstudy: 0.0%
- Not metA2A Agent Cardstudy: 0.0%
- Not metWebMCP toolsstudy: 4.2%
- Not metAgent Skills declaredstudy: 0.0%
This website sets rules for 16 AI crawlers by name. All others follow its general rules.
- GPTBot*allowed
- ClaudeBot*allowed
- Anthropic-AI*allowed
- Google-Extended*allowed
- Applebot-Extended*allowed
- Meta-ExternalAgent*allowed
- FacebookBotpartly
- Bytespider*allowed
- CCBot*allowed
- Diffbotpartly
- Omgilibotpartly
- OAI-SearchBot*allowed
- Claude-SearchBot*allowed
- PerplexityBot*allowed
- Applebotpartly
- Amazonbot*allowed
- YouBot*allowed
- ChatGPT-User*allowed
- Claude-User*allowed
- Perplexity-User*allowed
- DuckAssistBotpartly
- MistralAI-Userpartly
Read from the website’s own rules file (robots.txt). An asterisk marks a crawler the file names. The rest follow its general rules. “Partly” means only some pages are blocked.
How many times each website was listed as a source in these answers
In the study as US-listed.
- What are the best building material suppliers for large-scale residential construction projects in the US?
- Alternatives to manufactured trusses for roof construction in colder climates
- What are the alternatives to full-service installation for builders who prefer managing their own crews?
- Panelized framing vs stick-built: which is more efficient for mid-size construction projects?
- What to do if a bulk order of building materials arrives with damaged components?
- Where can contractors find high-quality manufactured roof and floor trusses for custom homes?
- How do bulk material orders impact pricing tiers for contractors?
- What is the typical cost difference between engineered trusses and traditional rafters?
- Is it worth paying extra for turnkey installation services when sourcing building supplies?
- How can contractors handle unexpected delays in delivery of manufactured structural components?
- What building material solutions work best for achieving fast build times in suburban developments?
- How do precision-engineered trusses improve construction efficiency on multi-family projects?
- Other supply options if local construction material distributors have stock shortages
- How do engineered wood products compare to traditional lumber for framing durability?
- Should builders in the US prioritize local suppliers for construction materials to save on delivery times?
Columns, left to right: OpenAI, Claude, Perplexity, Gemini. The AI assistants often disagree. Across the study, on 40% of the questions where a company is named, only one of the four names it.
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<a href="https://aeo-audit.rezolve.com/us/bldr.com"><img src="https://aeo-audit.rezolve.com/us/badges/bldr.com.svg" alt="Overall score 43 of 100, US AI Visibility Study 2026" width="280" height="64"></a>