# Dr. med. Holger Deertz: Agent-Direct Score C (62.6%) Site: https://dr-deertz.de/ Report: https://directindex.org/r/dr-deertz.de Scanned: 2026-10-20 (Provisional, with the action test and the assistant citation check still to come. The hatched part of the bar isn't measured yet.) Dr. med. Holger Deertz is partly visible to agents. Some AI assistants are turned away by Dr. med. Holger Deertz's website. It can't find a menu or price list, so it answers from other sites. It finds a way to book or order directly, through Doctolib. ## Direct links - Book directly: https://www.doctolib.de/praxis/essen/deertz-bautista-bruder?utm_campaign=website-button&utm_source=deertz-bautista-bruder-website-button&utm_medium=referral&utm_content=option-8&utm_term=deertz-bautista-bruder (through doctolib acting for the business) - Phone: 0201777823 - Address: Rüttenscheider Straße 56 45130 Essen ## Nearby, also direct Places near Dr. med. Holger Deertz that take a booking or an order on their own website, with no marketplace in between. - Klinik Am Stern - Dr. Martin Preuß (50 m): https://directindex.org/r/klinikamstern.de - Dr. med. Karin Roeser Ärztin für Naturheilverfahren (50 m): https://directindex.org/r/praxis-karin-roeser.de - Khaled Hashem (80 m): https://directindex.org/r/praxisfuerzahngesundheit-rue89.de ## What to fix first - **No list of services and prices found.** (+7 points) Agents answer 'what do they treat and what does it cost?' from directories instead. Add a page that lists services and prices as text, and link to it from the homepage. Guide: https://directindex.org/guides/menu-pdf-ai - **Structured data is incomplete.** (+6 points) Missing: address, telephone, opening hours. Guide: https://directindex.org/guides/structured-data-restaurant - **The server turns AI crawlers away at the door.** (+3.3 points) Requests as PerplexityBot (http_503) were refused, but a normal browser got the page. That's usually a bot list at the host or in a firewall that the owner never chose. Ask the host to allow these user agents. Guide: https://directindex.org/guides/blocking-ai-crawlers-without-knowing - **No llms.txt.** (no points, but worth doing) Optional for now and cheap to add. It's a short text file that describes the business for language models. Guide: https://directindex.org/guides/llms-txt-for-a-business ## What the site tells visitors (Measured, not scored) - **No English version declared.** Visitors from abroad, and assistants answering in English, read the page as it is. In Essen, 4.0% of comparable sites declare one. ## Fix kit: What to paste Structured data (JSON-LD). Paste it as one block in the page's head, or in the builder's custom code box. Change anything that's wrong. ```html ``` llms.txt. Save as /llms.txt at the root of the site. ``` # Dr. med. Holger Deertz > physician in Rüttenscheider Straße 56 45130 Essen, Essen dentists, clinics and vets. Phone 0201777823. ## Book or order directly - Book: https://www.doctolib.de/praxis/essen/deertz-bautista-bruder?utm_campaign=website-button&utm_source=deertz-bautista-bruder-website-button&utm_medium=referral&utm_content=option-8&utm_term=deertz-bautista-bruder (through doctolib acting for the business) ## About - Website: https://dr-deertz.de/ - This file follows llms.txt (https://llmstxt.org): a short plain-text description for language models. ``` ## Already right - **robots.txt lets AI crawlers in.** No rule blocks the main AI user agents. - **Structured data found (Organization).** no address, phone or hours in it - **Appointments through doctolib on your own domain.** There's no marketplace commission, and the customer stays yours. ## Where it stands 162 of 1015 in Essen dentists, clinics and vets. Top 16% of the sites scanned in this index. | What the top 10% of the index does | Top 10% | This site | |---|---|---| | Take bookings or orders on their own domain | 90% | yes | | Publish the menu or price list as HTML | 7% | no | | Let AI crawlers in (no block at the server or in robots.txt) | 88% | no | | Structured data with address, phone and hours | 20% | no | | Have an llms.txt | 23% | no | Nearest places in the index: Peter Kleine-hartlage (F, 50 m, https://directindex.org/r/augenarztpraxis-essen.de); Gerigk Nicole Psychotherapeutische Praxis (F, 50 m, https://directindex.org/r/mpu.jetzt); Klinik Am Stern - Dr. Martin Preuß (D, 51 m, https://directindex.org/r/klinikamstern.de); Barkhofen Jean Francois Naturheilpraxis (D, 51 m, https://directindex.org/r/naturheilpraxis-barkhofen.de); Zahnarztpraxis Dr. Oberbeckmann (C, 51 m, https://directindex.org/r/zahnarztpraxis-essen.de); Dr. med. Karin Roeser Ärztin für Naturheilverfahren (D, 52 m, https://directindex.org/r/praxis-karin-roeser.de); Dr. Christian von Ostau (C, 56 m, https://directindex.org/r/websitebuilder.online); Sanitätshaus am Stern MediShare AG (F, 60 m, https://directindex.org/r/sanitaetshausamstern.de); Khaled Hashem (B, 82 m, https://directindex.org/r/praxisfuerzahngesundheit-rue89.de); Kieferorthopädie (Zahnärztin mit Tätigkeitsschwerpunkt Kieferorthopädie) Essen - Teja Will (F, 93 m, https://directindex.org/r/kfo-work.de). ## What assistants answer The assistants haven't been asked about this business yet. They're asked about the top-ranked businesses in each city index, and about any business as soon as it's claimed. Claim this page to be included. Compared with its peers: Sites built with WordPress 58% (29% A or B, 108921 sites); Sites using Doctolib 55% (8% A or B, 2742 sites); This site 62.6%. See what an AI agent reads on this site: https://directindex.org/r/dr-deertz.de/agent-view ## Businesses like Dr. med. Holger Deertz in Essen dentists, clinics and vets | Group | Sites | Avg score | A or B | This site | |---|---|---|---|---| | Businesses of the same kind in Essen dentists, clinics and vets | 1015 | 45% | 7% | 62.6% | | Sites built with WordPress in Essen dentists, clinics and vets | 424 | 52% | 14% | 62.6% | | Sites using Doctolib in Essen dentists, clinics and vets | 85 | 57% | 7% | 62.6% | | Sites built with WordPress and using Doctolib in Essen dentists, clinics and vets | 52 | 58% | 8% | 62.6% | The best of the sites built with WordPress and using Doctolib in Essen dentists, clinics and vets: Drewitz Helmut Dr. Med. Arzt Für Innere Krankheiten (B 75.4%, https://directindex.org/r/praxis-drewitz.de); Schepers Torge (B 73.8%, https://directindex.org/r/orthopaedie-im-loewental.de); NOVOTERGUM Physiotherapie (B 72.3%, https://directindex.org/r/novotergum.de); Hautärztliche Gemeinschaftspraxis (B 70%, https://directindex.org/r/hautarzt-cramer.de); Balding H.-W. Dr. Zahnarzt Implantologie (C 67.7%, https://directindex.org/r/zahnarzt-essen-borbeck.de). With the three fixes above (No list of services and prices found; Structured data is incomplete; The server turns AI crawlers away at the door), the score would be about 87.7%. That would be 2nd of 1,015 in Essen dentists, clinics and vets, up from 162nd. ## The direct record What agents get for Dr. med. Holger Deertz, as JSON: https://directindex.org/api/direct/dr-deertz.de - Book: https://www.doctolib.de/praxis/essen/deertz-bautista-bruder?utm_campaign=website-button&utm_source=deertz-bautista-bruder-website-button&utm_medium=referral&utm_content=option-8&utm_term=deertz-bautista-bruder (vendor on own site: Doctolib; found by the scan of 2026-10-20, not yet tested) - Order: none on record - Menu: none on record - Hours: none on record - Phone: 0201777823 - Stable links that count: https://directindex.org/go/dr-deertz.de/book ## Can an agent transact? Measured, not scored (the score stays at spec v1.0). - UCP profile (/.well-known/ucp, Google and Shopify's Universal Commerce Protocol): no - ACP discovery document (/.well-known/acp.json, OpenAI and Stripe's Agentic Commerce Protocol): no - MCP server card (/.well-known/mcp/server-card.json): no - Ordering vendor that takes agent orders (Square, Toast, or a vendor whose terms allow agents): no - Vendor terms for agents, Doctolib: Not stated. Doctolib's patient terms (April 2026), article 19, forbid web scraping and make automated data harvesting subject to Doctolib's prior consent; they do not address an agent booking an appointment for a patient, and no API or partner path for agents is documented. Read 2026-10-15: https://media.doctolib.com/image/upload/v1776929137/legal/B2C_T_Cs.pdf ## Score breakdown | Component | Points | Available | |---|---|---| | Reachable | 21.7 | 25 | | Readable | 9 | 25 | | Actionable | 10 | 15 (the action test: pending) | | Cited | 0 | 0 (the assistant citation check: pending) | ## Agent readiness (Cloudflare) Level 1 of 5, Basic Web Presence. Cloudflare's report: https://isitagentready.com/dr-deertz.de - Link headers on the homepage: no (how: https://isitagentready.com/.well-known/agent-skills/link-headers/SKILL.md) - sitemap.xml: yes - AI bot rules in robots.txt: yes - Content Signals in robots.txt: no (how: https://isitagentready.com/.well-known/agent-skills/content-signals/SKILL.md) - Markdown on Accept: text/markdown: no (how: https://isitagentready.com/.well-known/agent-skills/markdown-negotiation/SKILL.md) - llms.txt: no (how: https://isitagentready.com/.well-known/agent-skills/llms-txt/SKILL.md) - API catalog (RFC 9727): no (how: https://isitagentready.com/.well-known/agent-skills/api-catalog/SKILL.md) - MCP server card: no (how: https://isitagentready.com/.well-known/agent-skills/mcp-server-card/SKILL.md) - A2A agent card: no (how: https://isitagentready.com/.well-known/agent-skills/a2a-agent-card/SKILL.md) - Agent Skills index: no (how: https://isitagentready.com/.well-known/agent-skills/agent-skills/SKILL.md) - OAuth or OIDC discovery: no (how: https://isitagentready.com/.well-known/agent-skills/oauth-discovery/SKILL.md) - OAuth protected resource metadata: no (how: https://isitagentready.com/.well-known/agent-skills/oauth-protected-resource/SKILL.md) - auth.md: no (how: https://isitagentready.com/.well-known/agent-skills/auth-md/SKILL.md) - Web Bot Auth key directory: no (how: https://isitagentready.com/.well-known/agent-skills/web-bot-auth/SKILL.md) - ARD capability manifest: no (how: https://isitagentready.com/.well-known/agent-skills/ard/SKILL.md) - DNS-AID records: no (how: https://isitagentready.com/.well-known/agent-skills/dns-aid/SKILL.md) - WebMCP tools on the page: no (how: https://isitagentready.com/.well-known/agent-skills/webmcp/SKILL.md) - JSON-LD for the business: yes Keep watching this business (https://directindex.org/r/dr-deertz.de/plan): the assistants are asked again every month, and you see what changed. 2 EUR a month or 19 EUR a year. Deep report: https://directindex.org/r/dr-deertz.de/deep. Ten questions phrased the way people ask them, each assistant's full answer, the eight nearest similar places, the fix plan and a PDF. 5 EUR, paid once. Reading and scanning stay free. These few euros pay for the questions sent to the assistants and for the servers. Methodology: https://directindex.org/methodology · Rescan now: https://directindex.org/scan?url=dr-deertz.de&force=1