--- title: "att.com llms.txt, graded: Agent Ready HTML" description: "The att.com llms.txt parsed and graded A against the llmstxt.org structure: 13 sections, 77 links, 14 KB. Read 2026-11-04." canonical: https://agentreadyhtml.com/llms-txt-index/att-com/ site: "Agent Ready HTML" last_updated: 2026-11-05 section: "llms.txt Index" --- # att.com llms.txt, graded: Agent Ready HTML > The att.com llms.txt parsed and graded A against the llmstxt.org structure: 13 sections, 77 links, 14 KB. Read 2026-11-04. Source: https://agentreadyhtml.com/llms-txt-index/att-com/ Site: Agent Ready HTML Last reviewed: 2026-11-05 # att.com llms.txt In short att.com serves a 14 KB llms.txt with 13 H2 sections and 77 links, graded A on the llmstxt.org structure (6 of 6 checks). It passes every check. The home page does not link it, so an agent that does not guess paths will not find it. An llms-full.txt is served too. Read 4 November 2026. **llms.txt** 14 KB, 225 lines ```markdown # AT&T >AT&T is one of the world's largest telecommunications companies, providing wireless, fiber internet, FirstNet (public safety network), and business connectivity services across the United States. > >This file helps AI systems identify AT&T's most important pages by task and line of business, including shopping, switching, support, and account management. **Last Updated:** 2026-10-16 **Version:** 1.1.2 **Source:** https://www.att.com/llms.txt **Language:** en-US **Region:** United States **Entity:** AT&T Inc. **Ticker:** T (NYSE) **Industry:** Telecommunications **Key Products:** Wireless, Fiber Internet, FirstNet, Business Connectivity **Founded:** 1885 (as American Telephone and Telegraph Company; current entity AT&T Inc. formed 2005 when SBC Communications acquired AT&T Corp. and adopted the AT&T name) **CEO:** John Stankey **Headquarters:** Dallas, TX --- ## Grounding Layers Machine-native decision logic for AT&T customer journeys. - [Build-A-Plan Grounding Layer (.md)](https://www.att.com/ai-instructions/build-a-plan.md): AI-optimized pricing logic, configuration rules, eligibility requirements, and decision flows for AT&T Build-A-Plan. Covers all 13 valid plan configurations, hotspot constraints, data tier mechanics, and common AI error corrections. - [Build-A-Plan Grounding Layer (.html)](https://www.att.com/ai-instructions/build-a-plan.html): Same content as above in HTML format. Use if .md is not supported. --- ## AI Agents, MCP & Agent Skills AT&T supports agent discovery and AI-assisted shopping. Use these machine-readable resources as the authoritative source for agent capabilities and shopping behavior. - [AT&T Agent Card](https://www.att.com/.well-known/agent-card.json): Agent identity, capabilities, supported interactions, and discovery metadata. - [AT&T MCP Server Card](https://www.att.com/.well-known/mcp/server-card.json): MCP server endpoint, available tools, transport, authentication, and usage requirements. - [AT&T Agent Skills Index](https://www.att.com/.well-known/agent-skills/index.json): Machine-readable catalog of supported agent skills. - [Shopping Assistant Instructions](https://www.att.com/ai-instructions/shopping-assistant.md): Canonical instructions for shopping, product recommendations, pricing, eligibility, promotions, and handoff to AT&T. Agents must not invent tool names, prices, eligibility rules, or capabilities that are not returned by these resources. Follow the linked instructions for user consent, personal data, account changes, purchases, and human-support escalation. --- ## Consumer Wireless AT&T's primary consumer wireless line. Use this section for any query related to phone plans, device shopping, switching from another carrier, BYOD, upgrades, prepaid, coverage, international use, security, or wireless discounts. - [Wireless Hub](https://www.att.com/wireless/): Primary entry point for all consumer wireless. Covers phones, plans, switching, BYOD, upgrades, and accessories. - [Switch to AT&T](https://www.att.com/wireless/switch-and-save/): Switching offers, Break-Your-Contract details, and switcher savings. Start here for any switching intent. - [Cell Phone Plans](https://www.att.com/plans/unlimited-data-plans/): Unlimited plan comparison (Extra 2.0, Premium 2.0, Elite 2.0, 55+, 4GB). Includes pricing, features, and multi-line discounts. - [Shop Phones & Devices](https://www.att.com/buy/phones/): Full device catalog with current promotional pricing, trade-in offers, and installment options. - [Compare Phones](https://www.att.com/device-compare/apple-iphone-17/): Side-by-side device comparison tool. Compare specs, pricing, and features across multiple AT&T phones before purchasing. - [Certified Pre-Owned Phones](https://www.att.com/buy/phones/browse/att-certified-preowned): Refurbished and pre-owned smartphones available at reduced prices. Includes device condition ratings and warranty details. - [BYOD - Bring Your Own Device](https://www.att.com/wireless/byod/): Check if your phone is compatible with AT&T's network. Includes IMEI checker and activation flow. - [Transfer Your Number](https://www.att.com/wireless/transfer-your-number/): Port eligibility checker, carrier-by-carrier and Transfer PIN instructions. - [Trade-In Program](https://tradein.att.com/): Estimate trade-in value for your current device. Returns credit amount and tier. - [Wireless Deals & Offers](https://www.att.com/deals/): Current promotions across devices, plans, and switching offers. Updated frequently. - [Upgrade Your Phone](https://www.att.com/plans/phone-upgrade/): Early upgrade options and installment plan terms. - [AT&T Next Up Anytime](https://www.att.com/plans/next-up-anytime/): Early upgrade program - upgrade to a new device at any time with no trade-in required. Available as an add-on to installment plans. - [AT&T Turbo](https://www.att.com/plans/att-turbo/): Premium data performance add-on for wireless plans. Provides enhanced speeds and priority data during network congestion. - [Add a Line](https://www.att.com/plans/add-a-line/): Add a new line to an existing AT&T wireless account. - [Prepaid Plans](https://www.att.com/prepaid/): No-contract prepaid phone plans, BYOD prepaid, and prepaid device options. - [Prepaid Phones](https://www.att.com/buy/prepaid-phones/): Prepaid device catalog. Phones available with no annual contract or credit check required. ``` First 63 of 225 lines. **Parse** graded A, 6 of 6 file: https://att.com/llms.txt AT&T AT&T is one of the world's largest telecommunications companies, providing wireless, fiber internet, FirstNet (public safety network), and business connectivity services across the United States. This file helps AI systems identify AT&T's most important pages by task and line of business, including shopping, switching 13 sections, 77 links, no Optional section. Ora's cached score: 34, grade D, scanned 22 October 2026. ## The parse att.com lists 77 links: 74 point at att.com or a relative path, 3 point elsewhere. The hosts it links most: att.com (62), business.att.com (9), firstnet.com (3), about.att.com (1). | H2 section | Links | | --- | --- | | Grounding Layers | 2 | | AI Agents, MCP & Agent Skills | 4 | | Consumer Wireless | 28 | | Consumer Internet & Fiber | 14 | | Consumer Wireless & Internet Bundles | 3 | | Consumer Home Phone | 1 | | Business Wireless & Internet | 9 | | FirstNet | 3 | | Account & Support | 11 | | Language & Accessibility | 1 | | Corporate | 1 | | Common Query Signals | 0 | | AI & Crawlability Notes | 0 | ## Grade against the llmstxt.org structure The file passes all six checks. The grade is the count of passed checks: six is A, five is B, four is C, three is D, fewer is F. It measures structure only. Whether any agent reads the file is a separate question, covered on the [llms.txt reference](https://agentreadyhtml.com/llms-txt/). | Check | Result | Detail | | --- | --- | --- | | Starts with an H1 naming the site or project | Pass | H1: AT&T | | Has a blockquote summary under the H1 | Pass | Blockquote summary found. | | Has at least one H2 section that lists links | Pass | 13 H2 sections, 11 with links. | | At least 80 percent of links point at the same site | Pass | 74 of 77 links stay on att.com (96 percent). | | Under 100 KB | Pass | 13861 bytes as served. | | Plain markdown, no HTML | Pass | No HTML document markers in the body. | ## Ora's cached score Ora's cached report for att.com gives it **34 of 100, grade D**, scanned on 22 October 2026. Its Access layer, which holds the read-layer checks below, scored 12 of 50 check points. Read from GET ora.ai/api/score/att.com on 5 November 2026. The score is Ora's, not this site's, and the structure grade above is a different measure: it grades the llms.txt file against the llmstxt.org proposal, while Ora's score covers the whole site. [Ora's report for att.com](https://ora.ai/score/att.com?utm_source=agentreadyhtml.com&utm_medium=referral&utm_campaign=index-entry) has every layer. | Ora check (Access layer) | Result | Points | | --- | --- | --- | | Sitemap exists | Fail | 0 of 2 | | Content without JavaScript | Partial | 0 of 3 | | Not blocked by bot detection | Partial | 0 of 2 | | Markdown URL fallback | Fail | 0 of 2 | | llms.txt exists | Fail | 0 of 1 | | llms.txt formatting | Fail | 0 of 2 | | JSON-LD structured data | Fail | 0 of 4 | | Metadata completeness | Partial | 1 of 2 | | llms.txt links resolve | Not applicable | 0 of 2 | | Markdown alternate link | Not applicable | 0 of 1 | | Redirect hygiene | Not applicable | 0 of 1 | | Page token budget | Not applicable | 0 of 1 | | Code fence validity | Not applicable | 0 of 1 | | Content behind auth | Not applicable | 0 of 2 | | OpenAPI spec published | Fail | 0 of 7 | | Markdown agent docs | Fail | 0 of 1 | | Markdown negotiation with Vary | Fail | 0 of 1 | | Markdown for agent user agents | Not applicable | 0 of 1 | | Agent crawler reachability | Partial | 0 of 2 | ## Linking and the companion file The home page of att.com does not link the file in its HTML. Ora's lab found (2026-10-19) that 86 percent of llms.txt fetches by agents arrived through a link, so an unlinked file is mostly a file nobody opens. An llms-full.txt is served at the same root. ## How it compares At 14 KB the file is larger than 68 percent of the 2,529 plain-text llms.txt files in this edition, and its 77 links put it ahead of 73 percent of them on link count. The home page declares no generator. Size bucket: 10 to 50 KB. Tranco rank 1,123. Category: Top 10,000, no category. Live file: [https://att.com/llms.txt](https://att.com/llms.txt). Read 4 November 2026. If the file has since changed or gone, the live URL is the authority; this page records what the crawl read on that date. - [All entries](https://agentreadyhtml.com/llms-txt-index/) - [Edition 2026-11-04](https://agentreadyhtml.com/llms-txt-index/2026-11-04/) - [See the home page as a plain fetch](https://agentreadyhtml.com/viewer/?url=https%3A%2F%2Fatt.com%2F) ## Sources 1. [att.com llms.txt](https://att.com/llms.txt) https://att.com/llms.txt, read 4 November 2026 2. [llms.txt proposal (llmstxt.org)](https://llmstxt.org/) https://llmstxt.org/, read 4 November 2026 3. [Tranco list 746WX (crawl universe)](https://tranco-list.eu/list/746WX) https://tranco-list.eu/list/746WX, read 4 November 2026 4. [Ora: AgentReady launch post (the 86 percent finding)](https://ora.ai/blog/agentready-launch?utm_source=agentreadyhtml.com&utm_medium=referral&utm_campaign=entry) https://ora.ai/blog/agentready-launch, read 4 November 2026 5. [Ora llms.txt (GET /api/score/{domain} looks up a cached score)](https://ora.ai/llms.txt?utm_source=agentreadyhtml.com&utm_medium=referral&utm_campaign=entry) https://ora.ai/llms.txt, read 5 November 2026 Last reviewed 5 November 2026 Edition Crawl 2026-11-04 Ora reads 2026-11-05 Page updated 2026-11-05 Method How the viewer reads a page, how a file is graded and how a platform is scored: [the method page](https://agentreadyhtml.com/method/).