One catalogue for a city whose supply is scattered across four kinds of publisher.

• Municipal, non-profit and private supply in one ranked list, each labelled
• Thirteen families of filter that combine: age, dates, cost, type, hours, meals, dietary needs, logistics, format, registration state, discounts, sector, support
• Search by radius from home, by Municipio, or by neighbourhood
• A map with the radius drawn, because distance is a decision and not a number
• A dead end that proposes the two smallest changes that would return something

Four providers quote four different units. Comparison is impossible until they are reduced to one.

• Normalised price per week per child, with what it includes
• Municipal fees across all twenty-one ISEE bands, from free upward
• Registration fees, meals, before- and after-care counted in, not left as footnotes
• Sibling, multi-week and early-booking discounts applied where they exist
• Two to four activities side by side on price, dates, hours, meals, distance, deadline

The feature no competitor offers: not one activity, but seven weeks for every child inside one budget.

• Constraints stated once — children, dates, budget, distance, working day, meals
• Three complete plans that trade differently: cheapest, least travel, most variety
• The weeks it cannot cover, named child by child rather than quietly dropped
• When a request cannot fit, the two constraints that collide and costed ways out
• Re-plan one child while the other's weeks stay exactly as they are
• Your own weeks — the grandparents, the holiday — count as cover

The cheapest places in Milan have the tightest windows. Deadlines are data here, not sentences inside a description.

• Registration openings, closings, last places and newly matching activities as typed events
• Alerts per child, opt-in and individually switchable
• A weekly digest ranked like the search, with a reason beside each item
• A family calendar across all children, with clashes outlined before June
• Export to the calendar the family already uses

The hardest part of the product, and the one that decides whether it is still useful in a year.

• Every source read under a named agreement or an open licence, recorded as data
• Six-stage reads: fetch, parse, extract, diff, validate, gate — each one inspectable
• The bytes kept, so a fix can be judged against the same document
• Compared against last year's edition, so a republication is three changes and not thirty-two records
• Two independent extractions, and anything they disagree on goes to a person
• The same camp found in three places collapses to one record

A municipality is a consenting publisher, not a target. A provider is the only person who knows their own prices.

• A console showing what was agreed, what is live, and what we could not read
• Change the cadence, hand us a feed instead of a PDF, pause, or withdraw — no email needed
• Providers create and correct their own listings, with validation as they type
• Places and deadlines on their own quick path, because they go stale fastest
• Connect a calendar feed, Instagram, Telegram or a forwarded newsletter instead of typing

A product for households with children, designed so that most of the data simply is not collected.

• The account belongs to an adult; a child exists as an age and some interests
• No name, school, photo or precise location asked for at any point
• Separate consents for the digest, alerts and personalisation, each revocable
• Ranking runs on what the family stated, not on what it was observed doing
• Anything written by a model says so, and the model never decides a number

The measurements that tell you whether to fund the next stage.

• Searches that returned nothing, ranked — the supply to acquire next
• Coverage by Municipio and by age band, so gaps are visible before they are complaints
• Saves per household and the weekly return rate
• Clicks sent onward to a provider or a municipal registration page
• Which providers keep their own listings current, and which never come back