# Extension Point

> Define stable extension contracts, register implementations through IoC or plugin registries, isolate plugin failures, and expose deterministic loading order.

Record: `algorithms:extension-point`
Kind: algorithm
Canonical: https://banes-lab.com/ontology/algorithms#algorithms-extension-point
Closure: https://banes-lab.com/json/records/algorithms/extension-point/closure

Listed in [Algorithm contracts](https://banes-lab.com/api/records/algorithms.md), after [Runtime Discovery](https://banes-lab.com/records/algorithms/runtime-discovery.md) and before [Construction Boundary](https://banes-lab.com/records/algorithms/construction-boundary.md).

## Domain

- [Architecture](https://banes-lab.com/records/algorithms-domain/architecture.md)

## Tier

- [leaf](https://banes-lab.com/records/vocabulary/domain-tier-leaf.md)

## Composed by

- [Manifest-Driven Documentation](https://banes-lab.com/records/algorithms/manifest-driven-documentation.md)
- [Composed Turn Contract](https://banes-lab.com/records/algorithms/composed-turn-contract.md)
- [<Mode-Driven Response Schema>](https://banes-lab.com/records/algorithms/mode-driven-response-schema.md)
- [Custom Type Registration](https://banes-lab.com/records/algorithms/custom-type-registration.md)

## Math type

- [Logic](https://banes-lab.com/records/reasoning/math-type-logic.md)

## Force

- [Contract compatibility](https://banes-lab.com/records/force/contract-compatibility.md)
- [Correctness verification](https://banes-lab.com/records/force/correctness-verification.md)
- [Observability traceability](https://banes-lab.com/records/force/observability-traceability.md)
- [Runtime extensibility](https://banes-lab.com/records/force/runtime-extensibility.md)

## Linked from

- [Architecture](https://banes-lab.com/ontology/algorithms/algorithms-domain-architecture.md)
- [Mode-driven response schema](https://banes-lab.com/ontology/algorithms/algorithms-domain-mode-driven-response-schema.md)
- [CSS cascade](https://banes-lab.com/ontology/algorithms/algorithms-domain-css-cascade.md)
- [The mathematics](https://banes-lab.com/ontology/reasoning/the-mathematics.md)
- [Domain tiers](https://banes-lab.com/ontology/schema/the-vocabulary-domain-tier.md)
- [The forces](https://banes-lab.com/ontology/schema/the-forces.md)