# llms.txt · sizeguide.ai

## Canonical resources
- /methodology/         # engine rules, confidence formula, provenance standard
- /developers/schema    # Open Sizing Schema v0.1 (versioned)
- /charts/              # provenance-labeled, dated size charts
- /pricing/             # flat tiers; no order-volume surcharges

## API (stateless, structured JSON)
- POST https://api.sizeguide.ai/v1/recommend   # size + confidence + provenance
- POST https://api.sizeguide.ai/v1/convert     # table-driven size conversion
- GET  https://api.sizeguide.ai/v1/charts/:slug

## Data policy
- Every chart carries provenance and a last-verified date
- Recommendations are deterministic and explainable
- Below the confidence floor, the engine declines