The Direct Index
Report · Frankfurt dentists, clinics and vets · scanned 2026-10-20

Dr. Med. Claus Keller

praxis-ckeller.de is partly visible to agents.

Listed by OpenStreetMap · Overture Maps.

BookOrderCallWebsite

Ways to reach Dr. Med. Claus Keller directly, with no marketplace in between. Checked 2026-10-20. On the business's own site. Report a mistake

Hours, from OpenStreetMap · Overture Maps: Mo-Fr 08:00-12:00, Mo,Tu,Th 13:30-18:00

+4969592766

Diese Seite auf Deutsch

Nearby, also direct

Places near Dr. Med. Claus Keller that take a booking or an order on their own website, with no marketplace in between.

Owners

The website's grade

An AI assistant can open Dr. Med. Claus Keller'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 on the site.

63.1%

41 of 65 points available

0/5

agent-readiness level, Not Ready

3

things to fix

Provisional, with the action test and the assistant citation check still to come. The hatched part of the bar isn't measured yet.

See what an AI agent reads on this site →

What the site tells visitors Measured, not scored

These don't change the grade.

No English version declared.

Visitors from abroad, and assistants answering in English, read the page as it is. In Frankfurt, 11% of comparable sites declare one.

Every city compared →
Assistants

What assistants answer

Each assistant gets three questions about this business: the official website, where to book and where to order. Each cell shows where the answer sent people.

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.

Where it stands

How Dr. Med. Claus Keller compares

Where it stands

296 of 1,670 in Frankfurt dentists, clinics and vets

Top 18% of the sites scanned in this index. Just above: Dr. Katharina Iltgen, Dr. Annette Müller-schöll & Alexander Rusu C, Dr. Med. A. Rümelin C. Just below: Dr. Med. Leonie Von Grawert Privatpraxis Für Dermatologie, Allergologie, Ästhetische Medizin C, Dr. Neuwirth & Bose Gemeinschaftspraxis C.

What the top 10% of the index doesTop 10%This site
Take bookings or orders on their own domain100%yes
Publish the menu or price list as HTML5%no
Let AI crawlers in (no block at the server or in robots.txt)95%yes
Structured data with address, phone and hours14%no
Have an llms.txt26%no

The top 10% are the 174 highest-scoring reachable sites in the index at the last update.

Nearest places in the index

PlaceDistanceGradeDirect booking or ordering
Hollander, Dirk A. Prof.dr.med. Facharzt Für Allgem. Chirurgie4 mCyes
Dr. med. Christoph Lotz54 mCyes
Centrum Gastroenterologie Bethanien61 mByes
Physionovum70 mFno
CCB99 mCyes
Gabriele Lehmann-becker102 mDno
Centrum f. Hämatologie und Onkologie Bethanien116 mByes
Main Implantat Frankfurt118 mCyes
Dr. Marcel Marquardt128 mCyes
Schlesinger Stefan Dr med Arzt fur Allgemeinmedizin197 mCyes
Businesses like yours

Businesses like Dr. Med. Claus Keller in Frankfurt dentists, clinics and vets

GroupSitesAvg scoreA or BThis site
Businesses of the same kind in Frankfurt dentists, clinics and vets1,67048%13%63.1%

The best of the businesses of the same kind in Frankfurt dentists, clinics and vets

Vodafone Shop A 90.8% · Pizzeria Roma A 89.7% · Zentrum Für Ambulante Operative Gynäkologie A 87.7% · Augenarztpraxis William J. Heffernan B 84.6% · BAD Gesundheitszentrum Frankfurt/Main B 84.6%

After the top fixes

With the two fixes above (No structured data for the business; No list of services and prices found), the score would be about 95.4%, which would be first of 1,670 in Frankfurt dentists, clinics and vets.

Peers are the businesses in the same index that have a reachable site, using the latest scan of each. The rank comes from the index's current ranking.

Findings

What to fix first

  1. No structured data for the business +14 points

    Add schema.org JSON-LD for the business (Dentist, MedicalClinic, Physiotherapy or the closest type, with name, address, telephone and openingHoursSpecification). Every assistant reads this block first, and the fix kit below has it filled in. How to fix it

  2. 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. How to fix it

  3. 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. How to fix it

Send the fixes to your web person

One email with the fixes and the link. Nothing is stored.

No one is listed yet to fix this in Frankfurt dentists, clinics and vets. List your agency or yourself. It's free, and every listing is reviewed by hand.

Already right

  • robots.txt lets AI crawlers in No rule blocks the main AI user agents.
  • AI crawlers get the page GPTBot, ClaudeBot and PerplexityBot all got a normal response.
  • Appointments on your own site Agents can book an appointment without going through a marketplace.
  • Ordering on your own site Agents can order without going through a marketplace.

Builder: unknown · Front: cloudflare · contact page /impressum: nothing new; booking page /terminanfrage: ordering link (own domain)

Fix kit

What to paste

Filled in from the business's own record and this scan. Check every line before it goes live. The guides show where it goes on your builder.

Show the code 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. Guide.

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Physician",
  "name": "Dr. Med. Claus Keller",
  "url": "http://www.praxis-ckeller.de/",
  "telephone": "+4969592766",
  "geo": {
    "@type": "GeoCoordinates",
    "latitude": 50.1297406,
    "longitude": 8.7064156
  },
  "openingHours": "Mo-Fr 08:00-12:00, Mo,Tu,Th 13:30-18:00",
  "potentialAction": [
    {
      "@type": "ReserveAction",
      "target": {
        "@type": "EntryPoint",
        "urlTemplate": "https://praxis-ckeller.de/terminanfrage",
        "actionPlatform": [
          "http://schema.org/DesktopWebPlatform",
          "http://schema.org/MobileWebPlatform"
        ]
      },
      "result": {
        "@type": "Reservation",
        "name": "Reservation"
      }
    },
    {
      "@type": "OrderAction",
      "target": {
        "@type": "EntryPoint",
        "urlTemplate": "https://praxis-ckeller.de/vorbereitung",
        "actionPlatform": [
          "http://schema.org/DesktopWebPlatform",
          "http://schema.org/MobileWebPlatform"
        ]
      }
    }
  ]
}
</script>

llms.txt

Save as /llms.txt at the root of the site. Guide.

# Dr. Med. Claus Keller

> physician in Frankfurt dentists, clinics and vets. Phone +4969592766.

## Book or order directly

- Book: https://praxis-ckeller.de/terminanfrage (on the business's own site)
- Order: https://praxis-ckeller.de/vorbereitung (on the business's own site)

## Opening hours

Mo-Fr 08:00-12:00, Mo,Tu,Th 13:30-18:00

## About

- Website: http://www.praxis-ckeller.de/
- This file follows llms.txt (https://llmstxt.org): a short plain-text description for language models.
Owners

Own this business?

If you fixed something or think a check is wrong, rescan. Rescans are free. Claiming takes one email to confirm. After that, the three assistants are asked about the business right away and the site is rescanned every week. You get a message only when the score changes.

Rescan now · Markdown · Dispute a check

Keep watching this business: the assistants are asked again every month, and you see what changed. 2 EUR a month or 19 EUR a year. Deep report: ten questions to each assistant, plus the places nearby. 5 EUR, paid once. Reading and scanning stay free. These few euros pay for the questions sent to the assistants and for the servers.

Show the score

Owners who score well put the badge on their site. It links back here and updates with every scan.

Agent-Direct Score C

<a href="https://directindex.org/r/praxis-ckeller.de"><img src="https://directindex.org/badge/praxis-ckeller.de.svg" alt="Agent-Direct Score C" width="236" height="40"></a>
For developers and agents

What agents get, and what the site publishes

The direct record agents get for this business, the rails an agent could transact through, and the agent standards the site publishes.

Show the details
The direct record

What agents get for Dr. Med. Claus Keller

The links an assistant is sent when it books, orders or reads the menu for this business, where each leads, and when a browser last checked it. The same record is served as JSON at /api/direct/praxis-ckeller.de, through the MCP tool direct_record and in the city feed /city/frankfurt-clinics/direct.json.

PathLinkStatus
Bookpraxis-ckeller.de/terminanfrage own sitefound by the scan of 2026-10-20, not yet tested
Orderpraxis-ckeller.de/vorbereitung own sitefound by the scan of 2026-10-20, not yet tested
Menunone on record
HoursMo-Fr 08:00-12:00, Mo,Tu,Th 13:30-18:00from OpenStreetMap
Phone+4969592766

Stable links that count: /go/praxis-ckeller.de/book, /go/praxis-ckeller.de/order answer 302 to the links above; the count is the line "followed N direct links" on this page.

Owners: claim the business below to correct this record; the claim email carries the link.

Transactable

Can an agent transact?

Measured, not scored: the Agent-Direct Score stays at specification v1.0. This says which rails an agent could transact through today, and what the booking or ordering vendor's terms allow.

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

Found one hop past the home page: booking page /terminanfrage: ordering link (own domain).

Agent readiness

Level 0 of 5, Not Ready

These are the standards an agent looks for before it reads a page, checked the same way as Cloudflare's Agent Readiness scan. They don't count toward the score. Each missing item links to a how-to. Cloudflare's report.

Link headers on the homepageno how
sitemap.xmlno how
AI bot rules in robots.txtyes
Content Signals in robots.txtno how
Markdown on Accept: text/markdownno how
llms.txtno how
API catalog (RFC 9727)no how
MCP server cardno how
A2A agent cardno how
Agent Skills indexno how
OAuth or OIDC discoveryno how
OAuth protected resource metadatano how
auth.mdno how
Web Bot Auth key directoryno how
ARD capability manifestno how
DNS-AID recordsno how
WebMCP tools on the pageno how
JSON-LD for the businessno