Aucadastre
REMOTE · AUCADASTRE.FR · SCANNED SEP 25
A French address, all public facts: parcel, zoning, risks, permits, sales, energy labels. No key.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security69
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability63
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1021 tokens (~255/item across 4 items; 4 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management67
- Stability observed for 20 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
How do I install the Aucadastre MCP server?
Aucadastre is a hosted endpoint at https://aucadastre.fr/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · aucadastre.fr
claude mcp add --transport http fr-aucadastre-aucadastre 'https://aucadastre.fr/mcp'
{
"mcpServers": {
"fr-aucadastre-aucadastre": {
"url": "https://aucadastre.fr/mcp"
}
}
} {
"servers": {
"fr-aucadastre-aucadastre": {
"type": "http",
"url": "https://aucadastre.fr/mcp"
}
}
} [mcp_servers.fr-aucadastre-aucadastre] url = "https://aucadastre.fr/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"fr-aucadastre-aucadastre": {
"type": "remote",
"url": "https://aucadastre.fr/mcp",
"enabled": true
}
}
} openclaw mcp add fr-aucadastre-aucadastre --url 'https://aucadastre.fr/mcp' --transport streamable-http
mcp_servers:
fr-aucadastre-aucadastre:
url: "https://aucadastre.fr/mcp" {
"McpServers": {
"fr-aucadastre-aucadastre": {
"Transport": "http",
"Url": "https://aucadastre.fr/mcp"
}
}
} assistant mcp add fr-aucadastre-aucadastre -t streamable-http -u 'https://aucadastre.fr/mcp'
{
"mcpServers": {
"fr-aucadastre-aucadastre": {
"type": "http",
"url": "https://aucadastre.fr/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 24 Sept 26 0
- The server rewrote its instructions, which are the text every model session reads security
- 23 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 57 to 60. That category is still filling its 30-day observation window: 17 days of observed history at the previous scan, 18 at this one. The score rises as the window fills, whether or not the server changes.
- 21 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 50 to 53. That category is still filling its 30-day observation window: 15 days of observed history at the previous scan, 16 at this one. The score rises as the window fills, whether or not the server changes.
- 19 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.
- 17 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.
- 14 Sept 26 +1
- Tool “get_french_address_facts” changed its title: Tout ce qu'on sait d'une adresse en France → La parcelle et l'urbanisme d'une adresse en France cosmetic
1 cosmetic change on this day. Switch on “Show cosmetic changes” to see it.
- 12 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 25 Sept 2026 · Probed https://aucadastre.fr/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=aucadastre.fr | CN=WE1,O=Google Trust Services,C=US | 4 Sept 2026 | 3 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | c400125f5303dd6213c10668571c989c |
| SANs: aucadastre.fr, www.aucadastre.fr, *.www.aucadastre.fr | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of aucadastre.fr. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| fr. | present | 65381 | 13 | Verified |
| aucadastre.fr. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains |
| content-security-policy | default-src 'self'; base-uri 'self'; form-action 'self'; frame-ancestors 'none'; object-src 'none'; img-src 'self' data: https://data.geopf.fr https://inspire.cadastre.gouv.fr; style-src 'self' 'unsafe-inline'; font-src 'self'; script-src 'self'; connect-src 'self' |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | camera=(), microphone=(), geolocation=(self) |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://aucadastre.fr/mcp | Verified | 200 | |
| http (plaintext) | http://aucadastre.fr/mcp | Inconclusive | 405 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
get_french_address_facts La parcelle et l'urbanisme d'une adresse en France ~243
Les proprietaires personnes morales de l'adresse (SCI, societes, bailleurs sociaux, collectivites, Etat, avec SIREN et date de situation, jamais un particulier), la parcelle cadastrale d'une adresse francaise et sa contenance, le zonage d'urbanisme et les destinations autorisees, les prescriptions et servitudes, les risques (argile, sismicite, radon, catastrophes naturelles, installations classees), le terrain (altitude, pente, solaire), les permis de construire rattaches a la voie, les ventes des cinq derniers millesimes, au numero demande l'historique de sa parcelle (ventes, autorisations, naissance au plan depuis 2017), les diagnostics energetiques, les ecoles et entreprises autour. Meme texte que le jumeau .md de la page de voie. L'adresse se donne en toutes lettres ; sans numero, la reponse vaut au point de reference de la voie.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | L'adresse en toutes lettres, par exemple « 60 rue Pasteur, Vitry-sur-Seine ». Le numero est facultatif. |
No output schema declared.
No examples provided.
get_french_building_permits Les autorisations d'urbanisme delivrees dans une commune francaise ~131
Les permis de construire, d'amenager, de demolir et les declarations prealables delivres dans une commune, tels que la commune les declare au ministere (fichier Sitadel) : date, nature, adresse des travaux, parcelle, logements et surface crees, etat du chantier, demandeur quand c'est une personne morale. Les 500 plus recents ; l'API pagine le reste.
| Name | Type | Req | Description |
|---|---|---|---|
| code_insee | string | yes | Code INSEE de la commune, cinq caracteres, par exemple 94081 (Vitry-sur-Seine). |
No output schema declared.
No examples provided.
get_french_commune_facts Le marche, l'urbanisme et les risques d'une commune francaise ~193
Une commune francaise : ses voies adressees, le prix median au metre carre du dernier millesime, le loyer d'annonce au metre carre, le taux de taxe fonciere et son evolution depuis 2020, le document d'urbanisme opposable, la zone A/B/C du marche du logement, la part des locaux raccordables a la fibre, les risques communaux, la delinquance enregistree face au departement et a la France (SSMSI), l'eau du robinet (dernier controle sanitaire, analyses de douze mois, PFAS). Meme texte que le jumeau .md de la page de commune. Paris, Marseille et Lyon renvoient a leurs arrondissements.
| Name | Type | Req | Description |
|---|---|---|---|
| code_insee | string | yes | Code INSEE de la commune, cinq caracteres, par exemple 94081 (Vitry-sur-Seine). |
No output schema declared.
No examples provided.
get_french_parcel Une parcelle cadastrale francaise par sa reference ~136
Une parcelle par son identifiant a quatorze caracteres (code INSEE, prefixe, section, numero, par exemple 94081000AB0123) : sa contenance, sa commune, et la voie la plus proche de son centre, dont le jumeau porte tout le reste. Le proprietaire n'y est pas : ceux qui sont des personnes morales se lisent dans le jumeau de la voie, un particulier nulle part.
| Name | Type | Req | Description |
|---|---|---|---|
| parcel_id | string | yes | L'identifiant de la parcelle, quatorze caracteres, par exemple 94081000AB0123. |
No output schema declared.
No examples provided.
What is the Aucadastre MCP server?
Aucadastre is an MCP server listed in the public MCP registry as fr.aucadastre/aucadastre. A French address, all public facts: parcel, zoning, risks, permits, sales, energy labels. No key. This page covers its hosted endpoint (https://aucadastre.fr/mcp).
Is the Aucadastre MCP server safe to use?
Aucadastre scores 76 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Aucadastre MCP server expose?
Aucadastre exposes 4 tools: get_french_address_facts, get_french_commune_facts, get_french_building_permits, get_french_parcel. Their descriptions and schemas cost roughly 703 tokens of context every time the server is loaded.
Does the Aucadastre MCP server require authentication?
No. We connected to Aucadastre without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Aucadastre MCP server still maintained?
Aucadastre is still listed as active in the MCP registry. We last reached this channel on 25 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.