boligsiden - SKILL.md Agent Skill

name: boligsiden version: 1.0.0 description: > Make sure to use this skill whenever the user mentions anything related to Danish real estate, property prices, housing market in Denmark, apartments or houses for sale or rent in Denmark, sold properties, municipal data, or housing statistics — even if they don't explicitly mention boligsiden.dk. Also use it when they ask about specific Danish cities or areas in a housing context. Trigger phrases include: danish property, danish housing market, boligsiden, danish real estate, houses for sale in denmark, apartments for sale in denmark, rental properties in denmark, sold homes in denmark, property prices in denmark, danish municipalities, ejendom, bolig til salg, lejebolig, solgte boliger, boligpriser, boligsøgning, ejerlejlighed, villa, rækkehus, sommerhus, andelsbolig, house prices copenhagen, aarhus real estate, odense housing. context: fork allowed-tools: Bash(bun run skills/boligsiden/cli/src/cli.ts *)

Boligsiden Skill

Access live Danish property data from Boligsiden.dk's public API. No authentication needed.

When to use this skill

Invoke this skill whenever the user wants to:

Search for homes, apartments, or other properties for sale in Denmark
Find rental properties in Denmark
Look up recent property sales or sold prices in a Danish area
Get the price history / timeline for a specific listing
Find out about Danish municipalities (population, tax rates)
Autocomplete or validate a Danish location name or zip code
Analyse the Danish housing market (price ranges, days on market, etc.)

Commands

Search for-sale properties

bun run skills/boligsiden/cli/src/cli.ts search [flags]

Common flags:

--municipalities <names> — e.g. København,Frederiksberg
--cities <names> — e.g. Østerbro
--zip-codes <codes> — e.g. 2100,2200
--address-types <types> — villa, condo, terraced house, holiday house, cooperative, farm, hobby farm, full year plot, villa apartment, holiday plot, houseboat
--min-price / --max-price — DKK
--min-area / --max-area — m²
--min-rooms / --max-rooms
--sort-by — price, timeOnMarket, createdAt, date, random
--sort-ascending
--page / --per-page / --limit
--format — json (default), table, plain

Search rentals

bun run skills/boligsiden/cli/src/cli.ts rentals [flags]

Same location and size filters as search. --min-price/--max-price refer to monthly rent.

Search sold properties

bun run skills/boligsiden/cli/src/cli.ts sold [flags]

Extra flags:

--sold-months-back <n> — how far back to look (default 12)
--radius <metres> — radial search around a single location
--sort-by date — default sort for sold listings

Full property detail

bun run skills/boligsiden/cli/src/cli.ts detail <caseID> [--format json|plain]

Price history for a listing

bun run skills/boligsiden/cli/src/cli.ts timeline <caseID> [--format json|table|plain]

Location autocomplete

bun run skills/boligsiden/cli/src/cli.ts locations --text "<query>" [--limit 10] [--format json|table|plain]

List municipalities

bun run skills/boligsiden/cli/src/cli.ts municipalities [--limit n] [--format json|table|plain]

How to use effectively

Start with locations to get the right slug. The search commands require exact Danish location names. Use locations --text "<query>" first to resolve what the user typed into a valid slug before passing it to --municipalities or --cities.

Natural workflow: search → detail → timeline. Use search (or rentals/sold) to get a list of matching caseIDs, then call detail <caseID> to inspect a specific property, and timeline <caseID> to see its full price history.

Format choice matters.

--format table gives a quick human-readable overview — use this for summaries and comparisons.
--format json (default) is best for data processing or when you need to extract specific fields.
--format plain is ideal for single-record detail views (detail, timeline).

Pagination: --limit vs --per-page.

--per-page controls how many results the API returns per request (server-side).
--limit caps the total results the CLI outputs regardless of what the API returned (client-side).
Use --limit for quick overviews; use --page + --per-page for iterating through large result sets.

Usage examples

Find the right location name before searching

bun run skills/boligsiden/cli/src/cli.ts locations --text "Nørrebro" --format plain

Find cheap condos in Copenhagen

bun run skills/boligsiden/cli/src/cli.ts search \
  --municipalities København \
  --address-types condo \
  --max-price 2500000 \
  --sort-by price \
  --sort-ascending \
  --format table

Find rentals in Aarhus under 10.000 DKK/month

bun run skills/boligsiden/cli/src/cli.ts rentals \
  --municipalities Aarhus \
  --max-price 10000 \
  --min-rooms 2 \
  --format table

What sold recently near zip 8000?

bun run skills/boligsiden/cli/src/cli.ts sold \
  --zip-codes 8000 \
  --sold-months-back 3 \
  --sort-by date \
  --format table

Inspect a specific listing

bun run skills/boligsiden/cli/src/cli.ts detail abc123 --format plain

See if a listing has had price drops

bun run skills/boligsiden/cli/src/cli.ts timeline abc123 --format table

Compare municipality tax rates

bun run skills/boligsiden/cli/src/cli.ts municipalities --format table

Output formats

Format	Best for
`json`	Programmatic use, default for all commands
`table`	Human-readable summaries in the terminal
`plain`	Key/value detail views, easy to scan

All errors are written to stderr as { "error": "...", "code": "..." } and the process exits with code 1.

Notes

All data comes from the public api.boligsiden.dk REST API — no credentials required.
Pagination is 1-indexed (--page 1 is the first page).
--limit caps the number of results returned by the CLI regardless of what the API returns.
Property type values use English slugs (e.g. condo, not ejerlejlighed); use locations to resolve Danish place names.