Audience path
Parcel operators and neighbors
Short reads first
Start with the problem gap and parcel-first framing, then governance for ownership, sharing, and claim limits.
Open source project
Open source environmental sensing, grounded where you are.
Climate hazards are getting more local. The infrastructure to sense, interpret, and act on them at the site level — with trust, privacy, and honest uncertainty — is what we're building.
OESIS fuses indoor and outdoor sensor readings, site context, public hazard feeds, and nearby shared evidence into one trust-scored view — with confidence levels and reasons shown for every output.
Every output shows what was observed, what was inferred, and how strong the evidence is — so you can check the reasoning, not just trust a score.
Smoke, heat, floodTrust-scored evidenceYour data stays yoursAdvisory, not alerts
System pillars
Three rules that hold across every release
The tools and software will evolve, but these three principles are permanent.
- Parcel first — The product thinks about your whole site, not only a regional forecast.
- Private by default — Sensors and readings belong to the parcel operator unless you explicitly share.
- Shared by choice — Anything broader than your site is optional and controlled by policy you can see.
Who this is for
Find your path
Start where you are; depth stays one click away.
Audience path
Builders and integrators
Plain language, then specs
Evidence layers, modes, and advisory outputs in plain language—then hardware, software, and schemas on the open release hub.
Audience path
Partners and pilots
Align expectations, then engage
Follow the roadmap, pilot scope, and how to plug into deployment—after the short Why it matters / How it works spine so expectations stay aligned.
Why this matters long term
The gap between regional data and your site is growing
Climate-related hazards are becoming more frequent and more localized. Public alerts tell you what is happening regionally — but not what it means for your specific site, your indoor air, or your next decision as an occupant.
Prove the pipeline works end to end: sensor readings through inference to a parcel view with trust scores and honest uncertainty.
Test whether nearby parcels can share coarse signals without exposing private data — making each parcel smarter without central surveillance.
Communities understand shared risk collectively, with governance that keeps each occupant in control of their own data.
Parcel-level evidence complements emergency services, insurers, and utilities — better ground truth for institutions, better context for occupants.
Each step only works if the previous one earns trust through field use. That is why the current scope is deliberately narrow.
Active development
Version arc
v0.1 through v1.0 are acceptance-gated runtime lanes — each is a real working build with its own test suite. The next build target is v1.5, bridging from measurement to intervention.
0.1–1.0Implemented
Reference pipeline through fielded parcel system
Six acceptance-gated runtime lanes: reference pipeline, indoor+outdoor sensing, flood coverage, trust scoring and node registry, governance enforcement, and extended support objects (house state, intervention, verification).
What this adds
Bench-air + mast-lite + flood-node, node registry, five-factor trust scoring, consent/revocation/retention/export enforcement, house state and intervention tracking, contrastive explanations, divergence analysis.
1.5Next build target
Measurement-to-intervention bridge
Adds the minimum bridge from hazard sensing to building state, action, and measured outcome reasoning, including indoor response and outage-aware support surfaces.
What this adds
Introduces response and verification support surfaces without implying full automation or mature controls compatibility.
2.0Future direction
Block intelligence
First sparse shared intelligence across nearby parcels.
What this adds
Introduces block-scale derived intelligence without abandoning parcel ownership rules or the parcel-first operating model.
3.0Future direction
Neighborhood network
Neighborhood coordination becomes a first-class product layer.
What this adds
Extends from block-scale inference to broader neighborhood coordination, richer shared signals, and clearer network behavior.
4.0Long-range direction
City federation
Federated local systems connect at city scale.
What this adds
Connects larger areas without collapsing local control, parcel ownership, or neighborhood-level governance.
Near term
Current pilot focus
The field pilot moves the program from reference docs to real sites in one defined local geography. It focuses on repeatable installs, structured feedback, and operational learning. Geography, goals, and partner paths are on the pilot page.
Latest progress
v0.1–v0.5 scope and site alignment
April 2026
The site now describes active v0.1–v0.5 engineering lanes: reference pipeline, indoor+outdoor sensing, flood coverage, trust scoring, and governance enforcement, while keeping packet-status boundaries explicit. Next: pilot geography with partners and field milestones as they land. Project note.
Organize
Help shape the pilot
We are organizing community partners, pilot sites, builders, and funders. Pick a path on Get involved—or start with the Pilot page if you represent a site.