Aucadastre

Aucadastre provides free public access to French cadastral and urban planning data. Users can query address parcels, commune information, building permits, and zoning details without authentication or quota. The service returns JSON data sourced from official French datasets, offering details on parcel size, land use, construction permits, and associated risks. All data is openly available and the API is documented at https://aucadastre.fr/api.

Aucadastre publishes 1 API contract indexed on the APIs.io network. Tagged areas include cadastre, urbanisme, Geospatial, France, and Public Data.

The Aucadastre catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Aucadastre’s developer surface includes documentation, API reference, getting-started guide, and 15 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

19.0/100 emerging ▬ flat Agent 10/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessOpen

1 published contract 1 MCP Servers 1 Agent Skills

cadastreurbanismeGeospatial France Public Data

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 19.0/100 · emerging

Contract Quality 3.1 / 21

Developer Ergonomics 4.3 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 2.2 / 10

Discoverability 5.5 / 9

Regulatory Posture 3.1 / 15

Agent readiness — 10/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Government & Public Sector regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link

9 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 14.7 — up to +21.3 composite points
Access Clarity scores 0.0 — up to +20.0 composite points
Developer Ergonomics scores 25.5 — up to +14.9 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/aucadastre-fr/apis.yml: open an issue on github.com/api-evangelist/aucadastre-fr to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Aucadastre API

Public API providing French cadastral and urban planning data.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Aucadastre MCP Server

Remote MCP server at aucadastre.fr.

MCP SERVER

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

getting-started

AGENT SKILL

Aucadastre API pricing

Pricing Plans 1

Published pricing tiers and plan structures.

Aucadastre Fr Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Aucadastre Fr Rate Limits

0 limits

RATE LIMITS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Aucadastre Fr Context

12 classes · 121 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Aucadastre API Rules

47 rules · 45 errors 1 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Aucadastre Fr Openapi Overlay

0 actions · update

UNRECORDED

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Aucadastre Fr Authentication

0 schemes

SECURITY

Aucadastre Fr Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Aucadastre Fr Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

MCPServer

MCPServer

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: aucadastre-fr
name: Aucadastre
description: Aucadastre provides free public access to French cadastral and urban planning data. Users can query address parcels,
  commune information, building permits, and zoning details without authentication or quota. The service returns JSON data
  sourced from official French datasets, offering details on parcel size, land use, construction permits, and associated risks.
  All data is openly available and the API is documented at https://aucadastre.fr/api.
url: https://artifacts.apis.io/aucadastre-fr/apis.yml
x-type: company
accessModel:
  pricing: unknown
  onboarding: open
  trial: false
  try_now: false
  public: true
  gated: none
  gated_source:
  - onboarding
  label: Open access
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://aucadastre.fr/apple-touch-icon.png
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-02 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-02'
modified: '2026-11-02'
tags:
- cadastre
- urbanisme
- Geospatial
- France
- Public Data
tags_raw:
- cadastre
- urbanisme
- geospatial
- france
- public-data
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/aucadastre-fr-rules.yml
- type: JSONLD
  url: json-ld/aucadastre-fr-context.jsonld
- type: Vocabulary
  url: vocabulary/aucadastre-fr-vocabulary.yml
- type: DataModel
  url: data-model/aucadastre-fr-data-model.yml
- type: ErrorCatalog
  url: errors/aucadastre-fr-problem-types.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Conformance
  url: conformance/aucadastre-fr-conformance.yml
- type: LLMsTxt
  url: llms/aucadastre-fr-llms.txt
- type: ToolCrosswalk
  url: mcp/aucadastre-fr-tool-crosswalk.yml
- type: MCPServer
  url: mcp/aucadastre-fr-mcp.yml
- type: Hosts
  url: hosts/aucadastre-fr-hosts.yml
- type: Vendors
  url: vendors/aucadastre-fr-vendors.yml
- type: DomainSecurity
  url: security/aucadastre-fr-domain-security.yml
- type: Website
  url: https://aucadastre.fr/
- type: DeveloperPortal
  url: https://aucadastre.fr/api
- type: Documentation
  url: https://aucadastre.fr/api
- type: APIReference
  url: https://aucadastre.fr/api
- type: GettingStarted
  url: https://aucadastre.fr/api
apis:
- name: Aucadastre API
  description: Public API providing French cadastral and urban planning data.
  humanURL: https://aucadastre.fr/api
  baseURL: https://aucadastre.fr/api
  tags:
  - cadastre
  - urbanisme
  - Geospatial
  - France
  - Public Data
  tags_raw:
  - cadastre
  - urbanisme
  - geospatial
  - france
  - public-data
  aid: aucadastre-fr:aucadastre-api
x-enrichment:
  date: '2026-11-02'
  status: enriched
  artifacts_added: 30
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

Aucadastre API — frequently asked questions

Does Aucadastre have an API?

Yes. APIs.io lists 1 API from Aucadastre, including Aucadastre API.

How do I authenticate with the Aucadastre API?

Aucadastre documents its authentication (0 schemes). The details are profiled on APIs.io as Aucadastre Fr Authentication.

Does Aucadastre have an MCP server?

Yes. APIs.io lists 1 MCP server for Aucadastre: Remote MCP server at aucadastre.fr.

Is the Aucadastre API ready for AI agents?

Aucadastre has a Kin Score of 19.0 out of 100 (emerging) and an Agent Readiness score of 9.9 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

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