Find the open data you didn't know existed

Hawalius connects Claude or ChatGPT to 2.6 million+ public datasets over MCP. Tell it about your project, for work or for yourself, and it finds the data that fits, opens it, downloads it and builds charts and dashboards from it. Made for property and real estate, and open to anyone curious about government data, the economy and the world around them.

2.6 million+datasets in the catalogue

420+live sources and APIs

Licencesnamed and linked on every result, for you to check

01 / WHAT IT DOES

Finds it

Describe what you’re trying to work out, for yourself or for work. Claude or ChatGPT searches the catalogues and live sources, suggests data that could help, and tells you what exists, what fits and where to read each licence.

QUESTIONS YOU COULD ASKData to explore

Buying a home“I’m buying a house. What sold nearby, is it at risk of flooding, and how far is the nearest good school?”Land Registry · Environment Agency · DfE schools · Ofsted
Transport“How many buses leave near this flat each morning, and how busy is the nearest station?”Bus timetables · ORR station footfall · OpenStreetMap
Development“Is this site in a conservation area or green belt, and what has been granted planning nearby?”planning.data.gov.uk · UK PlanIt · listed buildings
Renting“My landlord wants to raise my rent. How does it compare with local rents and tribunal decisions?”ONS private rents · rent tribunal decisions · UK HPI
Agriculture“What grade is the farmland here, is it under a stewardship scheme, and is it in a flood zone?”Natural England land grades · Countryside Stewardship · EA flood zones
Forestry“Is there ancient woodland or priority habitat next to this site, and what wildlife is recorded there?”planning.data.gov.uk · priority habitats · GBIF
Economics“Are mortgage rates rising faster than wages and house prices in my area?”Bank of England · ONS earnings · UK HPI
Sustainability“Would solar panels pay off on this roof, and how clean is the local grid today?”PVGIS · NASA POWER · Carbon Intensity
Retail“Where should we open our next shop: footfall, spending power and how many rivals are nearby?”Census · ONS earnings · Overture Maps · GEOLYTIX
Council services“Which neighbourhoods have the oldest residents but the fewest GPs and bus services?”Census · deprivation · CQC · NHS GP lists · bus timetables
Ground risk“Is this plot near old landfill or coal mining, and what is the radon risk?”EA landfill · Mining Remediation Authority · BGS radon
Neighbourhood“Compare crime, noise and flood risk on these two streets before I choose where to live.”police.uk · Defra noise maps · EA flood risk
Housing supply“Is my council building enough homes, and what is happening to prices and rents there?”Housing Delivery Test · new homes · UK HPI · ONS rents
Care“Where is there demand for a new care home: older people, existing beds and their ratings?”Census · CQC care homes and ratings · OHID indicators
Commercial“How many offices and shops are in this area, what are they worth, and how many are empty?”VOA floorspace and rateable value · Overture Maps · OpenStreetMap
Climate risk“How exposed is this street to coastal erosion, surface water and river flooding by 2055?”EA coastal erosion · NaFRA2 flood bands · recorded floods
Food“Which takeaways near this school have poor hygiene ratings?”FSA hygiene ratings · DfE schools register
Energy“What renewable and battery projects are planned near this site, and how long is the grid queue?”REPD · NESO data portal · planning.data.gov.uk
Investment“Which areas have rising prices, a growing population and new jobs?”UK HPI · ONS population · business counts (Nomis)
Building“How tall are the buildings around this site, and are any of them listed?”Overture buildings · listed buildings · conservation areas
Health“How long do people live here compared with the national average, and how many GP patients are there?”OHID Fingertips · NHS GP lists · deprivation
Construction“How have building material prices moved, and which products have the lowest embodied carbon?”DBT building materials statistics · ÖKOBAUDAT · Climate TRACE
Valuation“What have three-bed semis on this street sold for, and how has the area moved since?”Land Registry · UK HPI · Council Tax stock by band
Site appraisal“Give me a constraints check for this site: flood, heritage, protected habitats and ground risk.”planning.data.gov.uk · EA flood zones · Natural England · BGS radon
Build to rent“Where are rents rising fastest for two-beds, and where are few new homes being built?”ONS private rents · new homes and completions · Housing Delivery Test
Student housing“How many students live here, and how good are the buses and trains nearby?”Census · bus timetables · ORR station footfall
Planning history“What has been applied for on this street in the last five years, and what was refused?”UK PlanIt · GLA Planning London Datahub
Affordability“How many years of local earnings does the average home cost here, compared with the region?”UK HPI · ONS earnings · Land Registry
Retrofit“How old are the homes in this council and which Council Tax bands are they in?”Council Tax stock by age and band · Census tenure
Logistics“Is this warehouse site near main roads with heavy traffic, and what are local wages?”DfT road traffic · ONS earnings · business counts
Scam check“Is this email a scam? Check its links and the sender’s domain, and whether the breach it mentions is real.”Phishing.Database · domain records · Have I Been Pwned
Cyber security“Which vulnerabilities in our software are attackers exploiting right now, and how likely are the others?”CISA KEV · NVD · FIRST EPSS
Sport“In T20 cricket, how much does winning the toss and batting first help at each ground?”Cricsheet
Politics“Which companies gave money to a political party and then won public contracts?”Electoral Commission · Contracts Finder · Electoral Commission
Markets“Which kinds of construction firm went into insolvency most in the last six months, by trade code, and is that more than the same months last year?”Insolvency Service
Cars“Which cars fail their MOT most often by make, model and age, and which almost never do?”DfT · DVLA · DVSA MOT data
Food and drink“Which pub gardens in Brighton are in the sun at 5pm on a June evening?”OpenStreetMap · sun position
Travel“Week by week this year, how many ships went through the Suez Canal against round the Cape of Good Hope?”IMF PortWatch
Outdoors“Which Wainwrights over 800 m are within 10 km of Keswick, and what time is sunrise and moonrise there on Saturday?”DoBIH · US Naval Observatory
Health“Over the last three summers, how many days was the West Midlands under an amber heat-health alert, and how many deaths were linked to each heat episode there?”UKHSA
Climate“How many of the ten warmest years in the Central England record since 1659 came after 2000, and how did last month compare with the 1961 to 1990 average?”Met Office HadCET
History“Which stone circles within 25 km of Keswick line up with the midsummer sunrise, and how wide is each?”OpenStreetMap · Wikidata · terrain heights
Cyber“Which vulnerabilities are attackers actively exploiting right now, and how likely are the others to be?”CISA KEV · FIRST EPSS
Supply chains“Which countries ship the most bicycles to the UK, and what duty applies to them?”CEPII BACI · UK Trade Tariff
Council“How much developer money has Camden been promised and how much has it actually spent?”planning.data.gov.uk
Space“Which visible ISS passes over Edinburgh this week come after dark and before midnight, and is the moon up for each?”CelesTrak · US Naval Observatory
World“Which countries raised life expectancy most since 1990 while GDP per head barely grew, and which did the reverse?”Our World in Data · World Bank

Start with the problem. Discover which data could help you answer it.

02 / WHAT IT DOES

Fetches it

Ask in Claude or ChatGPT. Hawalius fetches the data live from each publisher, adds each licence and credit line on the way back, and passes it into your chat.

Go wide or go narrow. A question can reach tables with millions of rows, filtered and counted at the source, so only what answers it comes back: up to 1,000 rows at a time in the chat, or up to 100,000 rows in a file to download where the licence allows.Most data stays with its publisher and is fetched when you ask. We keep a search index of the catalogues, short-term caches so we don’t overload publishers, copies of a few reference sets (places, postcode lookups, bus stops and building outlines), download files for 24 hours, and a record of requests for 90 days. PrivacyHawalius makes reasonable efforts to link each publisher’s licence and credit line with the data. They’re our summary: check the publisher’s own terms yourself.

How a question is answered

01 · YOU ASK
“I’m buying a house. What sold nearby, is it at risk of flooding, and how far is the nearest good school?”
In Claude or ChatGPT
02 · HAWALIUS
Picks the sources and sends the query
Checks your access and each licence first
03 · PUBLISHERS’ OWN APIS
HM Land RegistryEnvironment AgencyDfE schools register
Filtered and counted at the source
04 · BACK THROUGH HAWALIUS
Adds the licence and credit line
↗ Licence linkCredit linePublisher’s caveats
Then hands it back to your AI
05 · BACK IN YOUR CHAT
£612kmedian sale nearby, last 12 months
Zone 1flood zone, lowest risk
0.4 kmto the nearest school
↗ Open Government Licence v3.0 · HM Land Registry, Environment Agency, DfE

Illustrative example, not live figures

03 / WHAT IT DOES

Builds with it

Ask for a chart, a map, a comparison or a dashboard, and Claude or ChatGPT builds it from the data it just found.

Illustrative views, not live data · Claude or ChatGPT builds these from the data

THE CATALOGUE

Explore the data.

Follow your curiosity. We’re adding new data all the time.

Hover, focus or tap a category to explore.

EXPLORE THE CONNECTIONS

Planning

One MCP connector. More possibilities.

GET CONNECTED

How to get access

Add it to your AI app

Paste https://hawalius.com/mcp into Claude or ChatGPT, or ask your AI app to set it up for you with a setup file.

Sign in and apply

Sign in with your email (we send you a code) and answer a few questions, here or in the chat. You can browse every source while you wait.

Get approved

We approve each alpha user by hand, usually within 24 hours, and email you when you're in.