#opendata articles

Fresh new-business leads from city license filings (and the compliance traps)

When a business registers for a city license, the filing often becomes public within days: name, owner, business type, address and start date. For anyone selling to brand-new businesses (POS systems,

1 groundplanes.hashnode.dev

Mike Hansky3d ago · 5 min read

The unglamorous job behind a London sightseeing map: keeping the data true

Tourist maps usually fail quietly. The pins stay pretty while the city moves on — a museum closed for renovation, hours that changed last Tuesday, a “hidden gem” that is neither. I got tired of planni

londontouristmap.hashnode.dev

Groundplane Labs3d ago · 3 min read

Pulling restaurant health inspection data via API (9 US jurisdictions, JSON out)

Restaurant health inspection results are public almost everywhere in the US, but every county publishes them differently: Socrata APIs, ArcGIS layers, CSV dumps, or a search form that only shows one p

groundplanes.hashnode.dev

TableJourney3d ago · 7 min read

Stop storing event dates: store the rule and compute the next edition

Most event listings go stale in a predictable way. Someone types "18 to 21 November 2026" into a database, the event happens, and the page keeps showing last year's dates until a person notices. For o

tablejourney.hashnode.dev

Sihwan Oh5d ago · 7 min read

Ten Open-Data Portals, Ten Ways to List Their APIs: Notes From a Weekly Crawl

As of October 18, 2026 We are a small team that builds free web tools. One of them is an index of the APIs that national government open-data portals publish, one country per edition: Korea, Japan, th

webtool-notes.hashnode.dev

OpenData Forge5d ago · 4 min read

Give Claude/Cursor access to Spain's official gazette (BOE) via MCP

Disclosure: I maintain the open-source MCP server used here (MIT licence) and its hosted versions on MCPize (free plan plus paid plans, so I earn from paid subscriptions) and Smithery (free). This art

opendata-forge.hashnode.dev

OpenData Forge5d ago · 7 min read

Monitor EU public tenders (TED) for your keywords with Apify and n8n

Disclosure: I built and maintain the TED Actor used here. It's a paid Actor on the Apify Store ($1.50 per 1,000 results), so I earn a share when you run it. This article was written with AI assistance

opendata-forge.hashnode.dev

W SystemOct 15 · 2 min read

Look up European companies from official registers with one API

Which European company registers offer free official data, what each returns, and how to query them (plus GLEIF LEI) through one interface for KYB, CRM enrichment and invoice checks. KYB checks, CRM e

4 wsystem.hashnode.dev

W SystemOct 15 · 2 min read

Monitor EU public tenders daily with an API (TED, CPV codes, JSON)

Get a daily, filtered feed of EU public tenders from TED by keyword, CPV code and country, as JSON, using the official API or a scheduled job, plus triage tips. Every above-threshold public contract i

wsystem.hashnode.dev

Xuami mozSep 1 · 4 min read

Building with France's Hidden Gem: The Public Cadastre API

If you're a developer looking for rich, well-maintained geographic data to build your next project, you might want to look at France. France has been quietly building one of the best Open Data ecosyst

refcadastrale.hashnode.dev

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