For Agents
Lets agents query Norwegian property records — addresses, buildings, cadastres, ownerships, rights, building changes, and cultural heritage — across 204 GET endpoints under /realty/v1/.
Install Jentic One Beta
Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the Realty, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.
Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.
Step 1: Jentic One Host machine
# On the machine that will host your Jentic One instance:
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | shStep 2: Agent machine
# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh
jentic register # connects your agent to your Jentic One instanceJentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.
What an agent can do with Realty API.
Resolve a Norwegian address to its building, cadastre (matrikkelenhet), and street records in a single chained lookup
Pull the building-change history for a specific building, including contacts, developers, and related floors
Look up cadastre records by key, including conveyances, ownerships, rights, scores, and land-registry status
GET STARTED
Use for: I need to look up a Norwegian property by address, Get the cadastre record for a specific matrikkelenhet key, Retrieve the building-change history for a building, Find all separately occupied units at an address
Not supported: Does not handle non-Norwegian property records, mortgage pricing, or escrow flows — use for Norwegian matrikkel, address, building, and cadastre lookups only.
Ambita Realty is a Norwegian property data API exposing the EDR REST service across 204 endpoints. It covers addresses, buildings, cadastres (the Norwegian land registry concept of matrikkelenhet), shares, separately occupied units, building changes, affairs, complaints, cadastre conveyances, ownerships, rights, scores, and cultural heritage records. Most endpoints are GET resource lookups under /realty/v1/. Typical consumers are Norwegian banks, brokers, property valuation services, and due-diligence platforms that need authoritative cadastre and building-change data without crawling government registers.
Retrieve separately occupied units, shares, and floor data tied to an address or building
List affairs and complaints associated with a cadastre or building
Surface cultural heritage flags on a building for due-diligence reports
Search addresses or cadastres using the dedicated search endpoints rather than direct key lookups
Patterns agents use Realty API for, with concrete tasks.
★ Property Valuation and Due Diligence
Norwegian property valuation services can chain Ambita Realty endpoints to assemble a full dossier on an address: resolve the address to a building, pull the cadastre key, fetch ownerships and rights, then check for cultural heritage flags or open building changes. The 204-endpoint surface covers the data points a manual matrikkel review would require, so a desk valuation that took hours collapses to a single agent run.
Call GET /realty/v1/addresses/ with a postal address, take the resulting addressKey, then chain GET /realty/v1/addresses/{addressKey}/cadastres/ and GET /realty/v1/cadastres/{cadastreKey}/ownerships/ to return the registered owners
Mortgage Origination Workflows
Banks and mortgage platforms can verify the property a customer is borrowing against by pulling cadastre data, building changes, and any liens or rights. The integration replaces manual matrikkel lookups during underwriting and surfaces issues — open building changes, contested rights, cultural heritage restrictions — that materially affect the loan decision.
Given a cadastreKey, call GET /realty/v1/cadastres/{cadastreKey}/rights/, GET /realty/v1/cadastres/{cadastreKey}/ownerships/, and GET /realty/v1/cadastres/{cadastreKey}/landregistry to return a combined dossier
Building Change Monitoring
Real-estate analytics platforms can poll the building-changes endpoints to detect new approvals, developers, or floor additions across a portfolio of buildings. The integration is keyed by buildingChangeKey and exposes related contacts, developers, and floor records so the platform can attribute changes to the right party.
Call GET /realty/v1/buildingchanges/ filtered to a known buildingKey, then for each change fetch GET /realty/v1/buildingchanges/{buildingChangeKey}/developers/ to record who is doing the work
AI Agent Norwegian Property Lookups
Real-estate agents and due-diligence copilots can query Ambita through Jentic without managing the EDR auth handshake themselves. The agent searches Jentic for an address or cadastre intent, loads the operation schema, and executes against a Jentic-held credential. Useful when agents need to enrich a Norwegian address inside a broader workflow.
Search Jentic for 'look up Norwegian address', execute the operation backed by GET /realty/v1/addresses/ with the address text, and return the matching addressKey and buildingKey
204 endpoints — ambita realty is a norwegian property data api exposing the edr rest service across 204 endpoints.
METHOD
PATH
DESCRIPTION
/realty/v1/addresses/
Search and list addresses
/realty/v1/addresses/{addressId}
Get a unique address
/realty/v1/buildings/{buildingKey}
Get a building by key
/realty/v1/cadastres/
List cadastres (matrikkelenhet)
/realty/v1/buildingchanges/
List building changes
/realty/v1/buildings/{buildingKey}/changes/
Building changes for a building
/realty/v1/affairs/
List affairs
/realty/v1/addresses/
Search and list addresses
/realty/v1/addresses/{addressId}
Get a unique address
/realty/v1/buildings/{buildingKey}
Get a building by key
/realty/v1/cadastres/
List cadastres (matrikkelenhet)
/realty/v1/buildingchanges/
List building changes
Three things that make agents converge on Jentic-routed access.
Credential isolation
The Ambita EDR credential negotiated with the vendor is stored encrypted in the Jentic vault. Agents receive scoped execution capability — the credential never enters the agent's context, prompts, or logs.
Intent-based discovery
Agents search Jentic by intent (e.g. 'look up Norwegian address' or 'get cadastre ownerships') and Jentic returns the matching Ambita operation with its input schema, so the agent calls the right endpoint without navigating 204 routes by hand.
Time to first call
Direct Ambita integration: several days for credential negotiation, base-URL handling (the spec lists a relative URL), and chained-resource navigation. Through Jentic: under 1 hour — search, load schema, execute.
Alternatives and complements available in the Jentic catalogue.
Specific to using Realty API through Jentic.
What authentication does the Ambita Realty API use?
The published OpenAPI spec does not declare a security scheme, but Ambita's EDR service in production requires a per-customer credential issued by Ambita (typically a header-based token negotiated as part of onboarding). Through Jentic, that credential is held in the vault and injected at execution time so the agent never sees it. Confirm the exact header name with Ambita during contract setup.
Can I look up a Norwegian property by address with the Ambita Realty API?
Yes. GET /realty/v1/addresses/ accepts address-search parameters and returns matching address records with addressKey values. From there you can chain GET /realty/v1/addresses/{addressKey}/buildings/ or /cadastres/ to get the structures and cadastre records associated with that address.
What are the rate limits for the Ambita Realty API?
The spec does not document rate limits — Ambita applies them per customer contract. Agencies and banks typically receive higher per-second allowances than research customers. Confirm the tier with Ambita support before scaling automated lookups.
How do I get cadastre ownership data through Jentic?
Search Jentic for 'get cadastre ownerships'. Jentic returns the operation backed by GET /realty/v1/cadastres/{cadastreKey}/ownerships/, you load the schema (cadastreKey is the only required input), and execute. Jentic injects the Ambita credential. Sign up at https://app.jentic.com/sign-up.
Does this API cover property data outside Norway?
No. Ambita Realty is a Norwegian-only service tied to the matrikkel and Norwegian building-change registers. For other countries pair it with country-specific property APIs — there is no fallback for non-Norwegian addresses in this spec.
Can I track building changes for a specific building?
Yes. GET /realty/v1/buildings/{buildingKey}/changes/ lists the building changes for a given buildingKey. Each change has its own buildingChangeKey, which you can pass to GET /realty/v1/buildingchanges/{buildingChangeKey}/developers/ or /contacts/ to find responsible parties.
/realty/v1/buildings/{buildingKey}/changes/
Building changes for a building
/realty/v1/affairs/
List affairs