# AI Stack Registry — Snapshot 2026-03-31

- canonical: https://aistackregistry.com/snapshots/2026-03-31/
- as_of: 2026-03-31T03:13:26+00:00
- python_version: 3.14.3

## Machine entry contract
- machine_entry: https://aistackregistry.com/snapshots/2026-03-31/index.json
- models_index: https://aistackregistry.com/snapshots/2026-03-31/models/index.json
- providers_index: https://aistackregistry.com/snapshots/2026-03-31/models/providers/index.json
- single_model: https://aistackregistry.com/snapshots/2026-03-31/models/<provider>/<model_id>/model.json
- ecosystems_index: https://aistackregistry.com/snapshots/2026-03-31/ecosystems/index.json
- navigation_rule: start at machine_entry and follow snapshot-local lookup/artifact URLs from payloads directly.

## Human browse path
- models_catalog_markdown: https://aistackregistry.com/snapshots/2026-03-31/models/index.md
- models_catalog_text: https://aistackregistry.com/snapshots/2026-03-31/models/index.txt
- providers_catalog_markdown: https://aistackregistry.com/snapshots/2026-03-31/models/providers/index.md
- providers_catalog_text: https://aistackregistry.com/snapshots/2026-03-31/models/providers/index.txt

## Page variants
- html: https://aistackregistry.com/snapshots/2026-03-31/
- markdown: https://aistackregistry.com/snapshots/2026-03-31/index.md
- text: https://aistackregistry.com/snapshots/2026-03-31/index.txt
- json: https://aistackregistry.com/snapshots/2026-03-31/index.json

## Primary artifacts
- https://aistackregistry.com/snapshots/2026-03-31/python/constraints/3.14.3/constraints.txt
- https://aistackregistry.com/snapshots/2026-03-31/python/constraints/3.14.3/constraints.json
- https://aistackregistry.com/snapshots/2026-03-31/python/constraints/3.14.3/compat_report.json
- https://aistackregistry.com/snapshots/2026-03-31/models/index.json
- https://aistackregistry.com/snapshots/2026-03-31/models/index.md
- https://aistackregistry.com/snapshots/2026-03-31/models/providers/index.md
- https://aistackregistry.com/snapshots/2026-03-31/ecosystems/index.json

## Navigation
- registry_root: https://aistackregistry.com/
- latest_alias: https://aistackregistry.com/latest/
- snapshots: https://aistackregistry.com/snapshots/