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Autonomous Construction Intelligence
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Open-Source Autonomous Construction Intelligence

Autonomous Intelligence for Hyperscale Infrastructure

Multi-agent engineering platform that automates specification compliance verification, schedule risk contagion modeling, and critical-path delay prevention.

Lineage Tracing
Spec-DNA
SHA-256 Hash Chains
Schedule Contagion
R₀ Engine
Schedule Delay Physics
Multi-Agent Graph
8 Agents
LangGraph State Machine
Knowledge Layer
Neo4j + Chroma
Hybrid GraphRAG
Interactive Engines

Live Technical Playgrounds

Test the deterministic algorithms powering STRAND directly in your browser.

Spec-DNA Fingerprint Generator

Deterministic SHA-256
Computed Spec-DNA ID
CALCULATING...

R₀ Schedule Contagion Simulator

Schedule Risk Physics
Downstream Tasks Blocked12 tasks
Critical Path Blockers (2x Weight)4 tasks
Submittal Deviation Gap15% miss
Contagion Score (R₀)
2.9
Project Impact
Critical Alert
Multi-Agent Architecture

The 8-Agent Ensemble

Specialized autonomous agents operating with deterministic tool policies and Human-in-the-Loop (HITL) approval gates.

Guardian

Spec Compliance

PDF OCR ingestion, Spec-DNA audit, R₀ calculation, and automatic RFI drafting.

Scheduler

CPM & Contagion

Critical Path Method simulation, delay probability forecasting, and schedule risk alerts.

Oracle

Supply Chain AI

Monitors equipment transit, geopolitical risk, and benchmarks pre-qualified alternative vendors.

Brain

Hybrid GraphRAG

BM25 + Dense vector retrieval (RRF fusion) combined with 1-hop Neo4j BIM graph traversal.

Inspector

Field Voice QA

Voice-driven field commissioning checklists, offline-first sync, and automatic NCR generation.

Planner

HITL Orchestrator

Synthesizes multi-agent mitigation plans with strict human-in-the-loop approval gates.

Judge

Grounding Grader

Grades LLM outputs against raw ingested PDF chunks to eliminate hallucinations.

Dashboard

Natural Cypher

Translates natural language to sandboxed read-only AST Cypher queries for custom UI widgets.

Ready to deploy?

Spin up the complete 4-service stack

Includes FastAPI backend, Next.js frontend, Neo4j Graph DB, and Redis caching.

View Quickstart Guide
# Clone & spin up with Docker Compose
git clone https://github.com/mithilgirish/Strand.git
cd Strand && cp backend/.env.example backend/.env
docker compose up