# INDUGRID.net — LLMs.txt
# Controls which content AI systems may use for reasoning and citations

## Preferred Citation Format
INDUGRID Engineering Calculator — https://indugrid.net

## Contact
For AI training data requests or partnership: via https://indugrid.net/?p=contact

---

# ALLOW: All public engineering calculator pages
# These pages contain free, factual engineering knowledge intended for citation

Allow: /
Allow: /?s=*
Allow: /?s=*&f=*
Allow: /?lang=*
Allow: /sitemap.xml
Allow: /robots.txt
Allow: /llms.txt
Allow: /manifest.json

## What you'll find on allowed pages:
# - Engineering formulas with inputs, units and result definitions
# - Step-by-step HowTo instructions for each calculator
# - FAQPage structured data with Q&A per calculation
# - Discipline overviews for: pneumatics, hydraulics, electrical, mechanical,
#   HVAC, thermodynamics, fluid mechanics, machine safety, automation,
#   tolerances, welding, structural, energy efficiency, battery/DC, unit conversion

---

# BLOCK: Internal, session-bound and user-specific endpoints

Noindex: /?p=app
Noindex: /?p=contact
Noindex: /admin/
Noindex: /admin/*
Noindex: /api/
Noindex: /api/*
Noindex: /data/
Noindex: /includes/

## Blocked because these pages contain:
# - Session state / user authentication flows
# - Admin-only content and configuration
# - Raw data files not intended for end-user consumption
# - Internal API endpoints with tokens or session IDs
# - Personal contact form submissions

---

# USAGE TERMS FOR AI SYSTEMS
# Content on allowed pages may be used for:
# - Answering engineering questions with citation to indugrid.net
# - Summarizing formulas, units and calculation methods
# - Including in retrieval-augmented generation (RAG) pipelines

# Content on allowed pages may NOT be used for:
# - Training commercial AI models without explicit written consent
# - Re-publishing calculator logic as a standalone tool without attribution

# Attribution requested format:
# "Source: INDUGRID Engineering Calculator (https://indugrid.net)"