Nacel
nacel.fr is partly visible to agents.
Listed by Overture Maps.
Ways to reach Nacel directly, with no marketplace in between. Checked 2026-10-20. Through calendly acting for the business. Report a mistake
9 Rue des 2 Avenues, 75013, Paris · +33143204545
Prices: 12 prices on the site, the middle one €875 · WhatsApp: a link on the site
Places near Nacel that take a booking or an order on their own website, with no marketplace in between.
The website's grade
An AI assistant can open Nacel'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 Calendly.
44 of 65 points available
agent-readiness level, Basic Web Presence
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.
What the site tells visitors Measured, not scored
These don't change the grade.
Visitors from abroad, and assistants answering in English, read the page as it is.
Every city compared →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.
How Nacel compares
173 of 926 in Paris tours, attractions and museums
Top 19% of the sites scanned in this index. Just above: Caravelle Tour Services C, My Private Paris C. Just below: Bibliothèque-Musée de l'Opéra C, Bourse de Commerce C.
| What the top 10% of the index does | Top 10% | This site |
|---|---|---|
| Take bookings or orders on their own domain | 99% | yes |
| Publish the menu or price list as HTML | 51% | no |
| Let AI crawlers in (no block at the server or in robots.txt) | 94% | yes |
| Structured data with address, phone and hours | 4% | no |
| Have an llms.txt | 31% | yes |
The top 10% are the 95 highest-scoring reachable sites in the index at the last update.
Compared with its peers
| Average score | A or B | This site | |
|---|---|---|---|
| Sites using Calendly 190 sites | 59% | 21% | 67.7% |
Nearest places in the index
| Place | Distance | Grade | Direct booking or ordering |
|---|---|---|---|
| Promovacances | 231 m | B | yes |
| Pacific Voyages | 318 m | D | no |
| Noocea | 602 m | F | no |
| Musée français de la radiologie et de l'imagerie médicale | 787 m | B | yes |
| Centre Arago Santé | 1.6 km | B | yes |
| La Galerie des Enfants | 1.6 km | F | no |
| Espace des Sciences Pierre-Gilles de Gennes | 1.7 km | F | no |
| Les Grandes Serres du Jardin des Plantes | 1.7 km | C | yes |
| Méridienne de l'Observatoire de Paris | 1.8 km | F | no |
| Maison Chana Orloff | 1.8 km | C | yes |
Businesses like Nacel in Paris tours, attractions and museums
| Group | Sites | Avg score | A or B | This site |
|---|---|---|---|---|
| Businesses of the same kind in Paris tours, attractions and museums | 926 | 50% | 17% | 67.7% |
| Sites using Calendly in Paris tours, attractions and museums | 3 | 74% | 67% | 67.7% |
The best of the businesses of the same kind in Paris tours, attractions and museums
Musée du Vin A 92.5% · Boutique des Catacombes de Paris A 90.8% · Elizabeth Arden France A 90.8% · Les Maisons du Voyage A 90.8% · Pont Neuf A 90.8%
After the top fixes
With the two fixes above (No tickets and prices found; Structured data is incomplete), the score would be about 87.7%. That would be 6th of 926 in Paris tours, attractions and museums, up from 173rd.
This site appears in 2 cities (2 places on nacel.fr). All the cities it's in →
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.
What to fix first
- No tickets and prices found +7 points
Agents answer 'what does it cost and when?' from marketplaces instead. Add a page with tickets, times and prices as text, and link to it from the homepage. How to fix it
- Structured data is incomplete +6 points
Missing: address, telephone, opening hours. How to fix it
- The phone number on the site doesn't match the open map data
The site shows +33565765525, but OpenStreetMap or Overture Maps lists +33143204545. An assistant that sees two numbers can't tell which one to trust. Fix whichever is wrong, on the site or in the map data at openstreetmap.org.
Send the fixes to your web person
No one is listed yet to fix this in Paris tours, attractions and museums. 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.
- Structured data found (Organization) no address, phone or hours in it
- Tickets through calendly on your own domain There's no marketplace commission, and the customer stays yours.
Builder: unknown · Front: cloudflare · contact page /qui-sommes-nous: nothing new
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": "Organization",
"name": "Nacel",
"url": "http://www.nacel.fr",
"telephone": "+33143204545",
"address": "9 Rue des 2 Avenues, 75013, Paris",
"geo": {
"@type": "GeoCoordinates",
"latitude": 48.827771,
"longitude": 2.357496
},
"potentialAction": [
{
"@type": "ReserveAction",
"target": {
"@type": "EntryPoint",
"urlTemplate": "https://calendly.com/commerciaux_nacel/rdv?utm_source=nacel&utm_medium=website",
"actionPlatform": [
"http://schema.org/DesktopWebPlatform",
"http://schema.org/MobileWebPlatform"
]
},
"result": {
"@type": "Reservation",
"name": "Reservation"
}
}
]
}
</script>
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.
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
What agents get for Nacel
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/nacel.fr, through the MCP tool direct_record and in the city feed /city/paris-tours/direct.json.
| Path | Link | Status |
|---|---|---|
| Book | calendly.com/commerciaux_nacel/rdv?utm_source=nacel&utm_ vendor on own site: Calendly | found by the scan of 2026-10-20, not yet tested |
| Order | none on record | |
| Menu | none on record | |
| Hours | none on record | |
| Phone | +33143204545 |
Stable links that count: /go/nacel.fr/book 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.
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 |
| Vendor terms for agents Calendly, read | Not stated |
The terms do not address an agent acting for a person (several bar scraping or data extraction only), could not be read on the date given, or the vendor has not been researched yet. About Calendly · all vendors.
Level 1 of 5, Basic Web Presence
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 homepage | no how |
| sitemap.xml | yes |
| AI bot rules in robots.txt | no how |
| Content Signals in robots.txt | no how |
| Markdown on Accept: text/markdown | no how |
| llms.txt | yes |
| API catalog (RFC 9727) | no how |
| MCP server card | no how |
| A2A agent card | no how |
| Agent Skills index | no how |
| OAuth or OIDC discovery | no how |
| OAuth protected resource metadata | no how |
| auth.md | no how |
| Web Bot Auth key directory | no how |
| ARD capability manifest | no how |
| DNS-AID records | yes |
| WebMCP tools on the page | no how |
| JSON-LD for the business | yes |