Status: Historical / superseded repository.

This repository is preserved for project history and provenance. Current active development has moved to:

https://github.com/Vi-Chi/Cognitive-A.i-Matrix

Do not treat this repository as current canon unless a file is explicitly referenced from the active project knowledge base.

MΣBUS — Membrane Sigma Bus

The connective tissue. The medium through which Urbi and Orbi breathe.

MΣBUS is the typed message substrate connecting all components of the Vi-Chi Cognitive Architecture. It is environment-agnostic at its core, with deployment-specific membrane adapters for maritime, embedded, industrial, and other contexts.

The M stands for Membrane — the selective interface layer that is the same everywhere inside, and adapts to whatever is outside.

Formerly: ΣBUS / SigmaΣBUS

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Universal Message Protocol

M := (v, σ, π, δ, κ, τ, μ)

Field	Name	Description
v	Version	Protocol version
σ	Signature	Message type / schema identifier (dotted class.name)
π	Payload	Message content
δ	Destination	Target module or agent
κ	Context	Contextual metadata (trust / provenance / expiry)
τ	Timestamp	Monotonic nanosecond tick (ordering, not wall-clock)
μ	Mode	System mode tag (WAKE / LIMINAL / DREAM)

Invariants

ID	Rule
Ω₈	Action-layer messages are suppressed when μ = DREAM

Signature classes (σ)

Class	Purpose
cm.*	Coordination speech-acts (agent ↔ agent)
m.*	Cognition state / geometry (incl. m.prediction_record)
ext.*	Universal carrier — ANY foreign payload, verbatim
sys.*	Bus / system control

Quickstart

from mebus import MMessage, Mode, MembraneBus, NMEAAdapter

bus = MembraneBus()
bus.subscribe("m.state", lambda m: print(m.payload["value"]))

fix = NMEAAdapter().ingest("$GPRMC,123519,A,4807.038,N,01131.000,E,022.4,084.4,230394,003.1,W*6A")
bus.publish(fix)          # -> {'latitude': 48.1173, 'longitude': 11.5167, 'sog_knots': 22.4, ...}

Run the suite:

python -m unittest discover -s tests -v

Related

• Urbi — Inward coherence layer (Cognitive Matrix)
• Orbi — World-facing orchestration (Omni-AI)
• Autopoiesis — Self-maintaining substrate (hosts the Rust hot-path)

License

GNU General Public License v3.0 — see LICENSE.