# Plugins

Plugins are optional extensions. Core calibrated explanations work without them.

## Choose a path

- Practitioners: {doc}`practitioner/advanced/use_plugins`
- Contributors: {doc}`contributor/plugin-contract`
- External plugin listing: {doc}`appendices/external_plugins`

## Operational rules

- Plugins run in process with full application permissions.
- Trust and deny controls are required for production use.
- Governance details live in contributor docs, not in user quickstarts.

Contributor-facing ADR links:
- `docs/improvement/adrs/ADR-006-plugin-registry-trust-model.md` (maintainer-only docs set)
- `docs/improvement/adrs/ADR-013-interval-calibrator-plugin-strategy.md` (maintainer-only docs set)
- `docs/improvement/adrs/ADR-037-visualization-extension-and-rendering-governance.md` (maintainer-only docs set)
- `docs/improvement/adrs/ADR-015-explanation-plugin.md` (maintainer-only docs set)
- `docs/improvement/adrs/ADR-026-explanation-plugin-semantics.md` (maintainer-only docs set)

Entry-point tier: Tier 1.