Breathe Exposure Protocol v2.0

The open standard
for atmospheric exposure
data.

Air pollution kills 7 million people annually. The sensors exist. The data infrastructure does not. BXP is the open standard that fixes that — like HTTP for air quality. Any device writes it. Any software reads it. Nobody owns it.

Read the Spec Global Dashboard

Apache 2.0 · Forever free · DOI: 10.5281/zenodo.18906812

What BXP defines

A format layer,
not a platform.

BXP is a pure software protocol standard. Like HTTP, PDF, and MP3 — it requires no proprietary hardware, no centralised infrastructure, and no licensing fees.

It runs on any device, any platform, any geography, at any scale. A sensor company in Japan can write their own C++ implementation. A Nigerian startup builds their own node. Nobody needs permission.

The spec lives on GitHub permanently. The standard is the law. Everything else is an implementation of it.

Universal .bxp File Format

Any device or software reads and writes it. Covers 31 atmospheric agents including PM2.5, NO2, ozone, VOCs, heavy metals, and biological agents.
BXP_HRI Health Risk Index

Composite health risk score 0–100. WHO-derived weighting across all available agents. Single actionable number for any exposure record.
REST API Specification

Complete federated node architecture. Any institution runs a node. Nodes interoperate via standard endpoints. Nobody owns the network.
Privacy Framework

Individual records private by default. AES-256-GCM encryption. SHA-256 hashed identifiers. GDPR compliant by design.

Run a BXP node in 3 minutes

# Clone the reference implementation
git clone https://github.com/bxpprotocol/bxp-spec
cd bxp-spec/reference-server

# Install dependencies
pip install fastapi uvicorn pydantic httpx

# Start your BXP node
python server.py

# Dashboard: http://localhost:8000/dashboard
# API docs:  http://localhost:8000/docs
  

Cite BXP in your research

Specification Elvarin. (2026). BXP — Breathe Exposure Protocol v2.0 Technical Specification. Zenodo. https://doi.org/10.5281/zenodo.18906812 Reference Implementation Elvarin. (2026). BXP Protocol — Reference Implementation v2.0. Zenodo. https://doi.org/10.5281/zenodo.18907003 ORCID https://orcid.org/0009-0001-4856-4986

The open standard for atmospheric exposure data.

A format layer,not a platform.

Public Reference Node

The open standard
for atmospheric exposure
data.

A format layer,
not a platform.