Estimatiz

Estimatiz provides a free online real‑estate valuation service in France, using official DVF transaction data from the French government. Users can obtain price‑per‑square‑meter estimates for apartments and houses, view recent sales, and access methodology and data sources. The platform offers an open API that returns JSON estimates without requiring an account or personal data, supporting integration into websites, apps, and AI assistants.

Estimatiz publishes 2 API contracts indexed on the APIs.io network, including Public API, and 1 more. Tagged areas include Real Estate, Valuation, France, and Open Data.

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

Estimatiz’s developer surface includes documentation, API reference, getting-started guide, legal docs, and 4 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

30.5/100 thin Agent 36/100 agent ready Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

1 published contract 1 Agent Skills

Real Estate Valuation France Open Data

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 30.5/100 · thin

Contract Quality 10.9 / 21

Developer Ergonomics 4.9 / 17

Access Clarity 2.9 / 17

Operational Transparency 0.0 / 11

Contract Governance 1.9 / 10

Discoverability 5.5 / 9

Regulatory Posture 1.9 / 15

Agent readiness — 36/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 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 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) Ask about this →
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) Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented) Ask about this →

6 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 17.0 — up to +16.6 composite points Ask about this →
Developer Ergonomics scores 28.6 — up to +14.3 composite points Ask about this →
Operational Transparency scores 0.0 — up to +13.0 composite points Ask about this →

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.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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/estimatiz-fr/apis.yml: open an issue on github.com/api-evangelist/estimatiz-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 2

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)

OpenAPI

measured — observed by APIs.io (published)

APIs 2

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

Estimatiz API

Open API providing address lookup and real‑estate valuation in France.

Estimatiz Public API

The Public API from Estimatiz — 2 operation(s) for public.

Agent Skills 1

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

estimate-property

AGENT SKILL

Semantic Vocabularies 1

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

Estimatiz Fr Context

5 classes · 24 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Estimatiz API Rules

42 rules · 40 error-severity 1 warn-severity 1 info-severity

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.

Estimatiz Openapi Overlay

0 actions · update

UNRECORDED

Security Posture 1

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

Estimatiz Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

Estimatiz Agentic Access

2 operations

2 operations · 0 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Legal

Legal

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: estimatiz-fr
name: Estimatiz
description: Estimatiz provides a free online real‑estate valuation service in France, using official DVF transaction data
  from the French government. Users can obtain price‑per‑square‑meter estimates for apartments and houses, view recent sales,
  and access methodology and data sources. The platform offers an open API that returns JSON estimates without requiring an
  account or personal data, supporting integration into websites, apps, and AI assistants.
url: https://artifacts.apis.io/estimatiz-fr/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-07 (modular-v1; was harvest)
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - security
  generated: '2026-11-13'
  method: derived
specificationVersion: '0.20'
created: '2026-11-07'
modified: '2026-11-07'
tags:
- Real Estate
- Valuation
- France
- Open Data
tags_raw:
- Real Estate
- Valuation
- France
- Open Data
- API
apis:
- name: Estimatiz API
  description: Open API providing address lookup and real‑estate valuation in France.
  humanURL: https://www.estimatiz.fr/api-documentation
  baseURL: https://www.estimatiz.fr
  openapi:
    url: openapi/estimatiz-fr-openapi.json
- aid: estimatiz-fr:estimatiz-fr-public-api
  name: Estimatiz Public API
  description: The Public API from Estimatiz — 2 operation(s) for public.
  humanURL: https://www.estimatiz.fr/api-documentation
  baseURL: https://www.estimatiz.fr
  tags:
  - Public
  properties:
  - type: OpenAPI
    url: openapi/estimatiz-fr-public-api-openapi.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/estimatiz-fr-domain-security.yml
- type: Website
  url: https://estimatiz.fr/
- type: Documentation
  url: https://www.estimatiz.fr/api-documentation
- type: APIReference
  url: https://www.estimatiz.fr/api/openapi.json
- type: GettingStarted
  url: https://www.estimatiz.fr/estimation
- type: TermsOfService
  url: https://www.estimatiz.fr/conditions-api
- type: PrivacyPolicy
  url: https://www.estimatiz.fr/confidentialite
- type: Legal
  url: https://www.estimatiz.fr/mentions-legales
x-enrichment:
  date: '2026-11-07'
  status: enriched
  artifacts_added: 27
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Estimatiz API — frequently asked questions

Does Estimatiz have an API?

Yes. APIs.io lists 2 APIs from Estimatiz, including Estimatiz API and Estimatiz Public API.

Is there an OpenAPI specification for the Estimatiz API?

Yes. APIs.io indexes 1 OpenAPI specification for Estimatiz, each linked for download from this page.

Is the Estimatiz API ready for AI agents?

Estimatiz has a Kin Score of 30.5 out of 100 (thin) and an Agent Readiness score of 36.1 (agent-ready), scored by API Evangelist on 2026-11-13.

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