Open-source construction intelligence for AI agents.
Give your AI a Swiss address. It gathers official data, tells you what you can build, what could block you and what's happening nearby — with the evidence behind every conclusion. In French, German, Italian and English. No account, no API key, nothing sent anywhere but official public sources.
/property-audit "Badenerstrasse 171, 8003 Zürich"
PROPERTY CHECK — Badenerstrasse 171 8003 Zürich, Zürich
🌧 Heavy-rain runoff: 14% of the plot can be reached by surface water during heavy rain.
Entrances, light wells and garage ramps may need protection against water from the street or slope.
🔊 Road noise: moderate (about 64 dB by day, 51 dB at night).
Bedrooms and living rooms may have to face away from the road or use sound-insulating windows.
🏘 40 building applications were published within 500 m in the last 12 months.
The neighbourhood is changing (conversions, heating and solar, extensions, new buildings …).
🗺 Zoning: neighbourhood-preservation zone, up to 5 full floors and 18 m building height.
New buildings must fit the existing street pattern: closed street fronts, prescribed building depth and roof shapes.
☀️ Solar: the roofs are well suited for solar panels (97 m² usable, about 17 MWh a year).
A solar installation is likely worthwhile; many cantons subsidise it.
Confidence: 2 official facts · 3 calculations · 0 estimates · 0 need a professional
Next step: request the cantonal hazard-map extract for this plot from the cantonal natural-hazards office (ZH)
▸ Open full report: ./reports/zurich-AU6979/index.html
▸ Share: ./reports/zurich-AU6979/card.png
Real, unedited output — see the committed examples (Zürich ×2, Geneva) with their 18-section reports and evidence files.
The steps are the same everywhere; only step 2 differs by surface.
- Open Claude (Claude.ai or Claude Code).
- Add the skill: paste the repository URL or run the one-line install command shown.
- Type: /property-audit ""
Claude Code (macOS, Linux, WSL) — step 2 is one line:
curl -fsSL https://raw.githubusercontent.com/suchipizza/Topoli/main/install.sh | shWindows (PowerShell): irm https://raw.githubusercontent.com/suchipizza/Topoli/main/install.ps1 | iex. Needs Python 3.11+ and Git; the installer adds uv if missing, clones this repository into ~/.topoli/src and links the skill into ~/.claude/skills/. Alternative: /plugin marketplace add suchipizza/Topoli then /plugin install topoli@topoli (command becomes /topoli:property-audit).
Claude.ai — step 2 is "upload the skill under Customize → Skills" (paid plans, code execution on). Being validated: whether the sandbox can reach the Swiss geodata services. Until then, Claude Code is the reliable path. Details →
Stuck? → GitHub Discussions.
| Prompt | Why it is interesting |
|---|---|
/property-audit "Badenerstrasse 171, 8003 Zürich" |
quarter-preservation zone, 40 building applications within 500 m, road noise, runoff |
/property-audit "Rue du Rhône 14, 1204 Genève" --lang fr |
federal layers only — what a canton looks like before its adapters exist |
/property-audit "Freie Strasse 10, 4001 Basel" --lang de |
Basel old town, ÖREB restrictions |
/property-audit "Via Nassa 5, 6900 Lugano" --lang it |
lakeside: rare-flood extent, no public-law cadastre yet in Ticino |
/property-audit "Bundesplatz 3, 3011 Bern" |
heritage: federal cultural property and UNESCO old town, noise sensitivity levels |
Add --goal "I want to build 12 apartments" (or buy, renovate) to change which findings come first.
Ten federal checks for every Swiss address — address, parcel, buildings, flood/runoff/rockfall extents, road and rail noise, polluted sites, public-law restrictions (where the canton publishes its cadastre), roof solar suitability, federal heritage inventories, terrain — plus, for the Canton of Zürich, the zone, the City of Zürich building-ordinance rules with article citations, a development-potential estimate, protected objects and construction publications within 500 m. Every line carries its source, dataset, retrieval time and one of four confidence classes: A official fact · B calculation · C estimate · D needs a professional.
| Canton | Federal layers | Cantonal depth | Construction events |
|---|---|---|---|
| ZH | ██████████ 100% | ██████████ 100% | ██████████ 100% |
| GE | █████████░ 90% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| VD | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| BS | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| BE | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| TI | █████████░ 90% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| LU | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| SG | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| VS | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| GR | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| FR | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| AG | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| NE | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| JU | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| SO | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| TG | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| SH | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| SZ | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| ZG | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| BL | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| AR | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| AI | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| GL | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| OW | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| NW | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
| UR | ██████████ 100% | ░░░░░░░░░░ 0% | ░░░░░░░░░░ 0% |
- No valuations, cost estimates or approval likelihoods — ever.
- It does not replace an architect, the planning office, a notary, the land register, a surveyor, an engineer or an environmental consultant. It tells you what to ask them.
- No guessing: when a rule has no citable article or a source is unavailable, the finding says so (class D) instead of inventing a number.
- Runs on your machine, talks only to official public sources (
allowed_hosts.txt), sends no telemetry. The only counter is the click on the share link, on the website.
/nearby-construction · /development-potential · /construction-leads · /renovation-opportunities — tell us which one you need →
- Claim a
good first cantonissue (source URL, licence, fields, three fixture addresses). - Write the adapter in
topoli/countries/ch/<canton>/against theAdapterprotocol; document the endpoint and licence in the docstring. - Record fixtures (
topoli fixtures record …), add a live contract test and the templates in all four languages. - Add the
LICENCES.mdrow and open the PR. See CONTRIBUTING.md.
Code: Apache-2.0. Data: fetched on demand from official sources under their own licences, listed in LICENCES.md — never redistributed. Map tiles © swisstopo. Card font: Inter (SIL OFL 1.1).
Maintained by Noémie Rakotomalala · Imprint and privacy