{
  "code": null,
  "collection": "architecture",
  "href": "https://banes-lab.com/ontology#architecture-capability-declaration",
  "id": "capability-declaration",
  "kind": "mechanism",
  "layer": {
    "href": "https://banes-lab.com/ontology/schema#layer-declarative-core",
    "json": "https://banes-lab.com/json/records/layer/declarative-core",
    "label": "Declarative Core",
    "markdown": "https://banes-lab.com/records/layer/declarative-core.md",
    "ref": "layer:declarative-core"
  },
  "name": "Capability Declaration",
  "ref": "architecture:capability-declaration",
  "relations": [
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-manifest",
          "json": "https://banes-lab.com/json/records/lexicon/manifest",
          "label": "Manifest",
          "markdown": "https://banes-lab.com/records/lexicon/manifest.md",
          "ref": "lexicon:manifest"
        },
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-contracts",
          "json": "https://banes-lab.com/json/records/lexicon/contracts",
          "label": "Contracts",
          "markdown": "https://banes-lab.com/records/lexicon/contracts.md",
          "ref": "lexicon:contracts"
        }
      ],
      "relation": "requires"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology#architecture-runtime-discovery",
          "json": "https://banes-lab.com/json/records/architecture/runtime-discovery",
          "label": "Runtime Discovery",
          "markdown": "https://banes-lab.com/records/architecture/runtime-discovery.md",
          "ref": "architecture:runtime-discovery"
        },
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-self-description",
          "json": "https://banes-lab.com/json/records/lexicon/self-description",
          "label": "Self-Description",
          "markdown": "https://banes-lab.com/records/lexicon/self-description.md",
          "ref": "lexicon:self-description"
        }
      ],
      "relation": "reinforces"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology#architecture-dynamic-binding",
          "json": "https://banes-lab.com/json/records/architecture/dynamic-binding",
          "label": "Dynamic Binding",
          "markdown": "https://banes-lab.com/records/architecture/dynamic-binding.md",
          "ref": "architecture:dynamic-binding"
        }
      ],
      "relation": "enables"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-implicit-capability",
          "json": "https://banes-lab.com/json/records/lexicon/implicit-capability",
          "label": "Implicit Capability",
          "markdown": "https://banes-lab.com/records/lexicon/implicit-capability.md",
          "ref": "lexicon:implicit-capability"
        }
      ],
      "relation": "conflicts-with"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-declaration-drift",
          "json": "https://banes-lab.com/json/records/lexicon/declaration-drift",
          "label": "Declaration Drift",
          "markdown": "https://banes-lab.com/records/lexicon/declaration-drift.md",
          "ref": "lexicon:declaration-drift"
        }
      ],
      "relation": "tensions-with"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/schema#tension-capability-declaration-declaration-drift",
          "json": "https://banes-lab.com/json/records/tension/capability-declaration-declaration-drift",
          "label": "Capability Declaration / Declaration Drift",
          "markdown": "https://banes-lab.com/records/tension/capability-declaration-declaration-drift.md",
          "ref": "tension:capability-declaration-declaration-drift"
        }
      ],
      "relation": "tensions"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-implicit-capability",
          "json": "https://banes-lab.com/json/records/lexicon/implicit-capability",
          "label": "Implicit Capability",
          "markdown": "https://banes-lab.com/records/lexicon/implicit-capability.md",
          "ref": "lexicon:implicit-capability"
        }
      ],
      "relation": "violated-by"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology#architecture-manifest-based-design",
          "json": "https://banes-lab.com/json/records/architecture/manifest-based-design",
          "label": "Manifest-Based Design",
          "markdown": "https://banes-lab.com/records/architecture/manifest-based-design.md",
          "ref": "architecture:manifest-based-design"
        },
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-extract-role-interface",
          "json": "https://banes-lab.com/json/records/lexicon/extract-role-interface",
          "label": "Extract Role Interface",
          "markdown": "https://banes-lab.com/records/lexicon/extract-role-interface.md",
          "ref": "lexicon:extract-role-interface"
        }
      ],
      "relation": "refactored-by"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/schema#vocabulary-severity-recommended",
          "json": "https://banes-lab.com/json/records/vocabulary/severity-recommended",
          "label": "recommended",
          "markdown": "https://banes-lab.com/records/vocabulary/severity-recommended.md",
          "ref": "vocabulary:severity-recommended"
        }
      ],
      "relation": "severity"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology#architecture-category-metadata-self-description-declarative-systems",
          "json": "https://banes-lab.com/json/records/architecture-category/metadata-self-description-declarative-systems",
          "label": "Metadata / Self-Description / Declarative Systems",
          "markdown": "https://banes-lab.com/records/architecture-category/metadata-self-description-declarative-systems.md",
          "ref": "architecture-category:metadata-self-description-declarative-systems"
        }
      ],
      "relation": "category"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology#architecture-self-describing-architecture",
          "json": "https://banes-lab.com/json/records/architecture/self-describing-architecture",
          "label": "Self-Describing Architecture",
          "markdown": "https://banes-lab.com/records/architecture/self-describing-architecture.md",
          "ref": "architecture:self-describing-architecture"
        }
      ],
      "relation": "required-by"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/pag/validation#limitations",
          "json": "https://banes-lab.com/json/pag/validation/limitations",
          "label": "Limits",
          "markdown": "https://banes-lab.com/pag/validation/limitations.md",
          "ref": "chapter:/pag/validation#limitations"
        },
        {
          "href": "https://banes-lab.com/software-architecture/scale#systems-built-around-a-model",
          "json": "https://banes-lab.com/json/software-architecture/scale/systems-built-around-a-model",
          "label": "Systems built around a model",
          "markdown": "https://banes-lab.com/software-architecture/scale/systems-built-around-a-model.md",
          "ref": "chapter:/software-architecture/scale#systems-built-around-a-model"
        },
        {
          "href": "https://banes-lab.com/ontology#architecture-category-runtime-discovery-dynamic-binding",
          "json": "https://banes-lab.com/json/ontology/principles/architecture-category-runtime-discovery-dynamic-binding",
          "label": "Runtime Discovery / Dynamic Binding",
          "markdown": "https://banes-lab.com/ontology/principles/architecture-category-runtime-discovery-dynamic-binding.md",
          "ref": "chapter:/ontology#architecture-category-runtime-discovery-dynamic-binding"
        },
        {
          "href": "https://banes-lab.com/ontology#architecture-category-metadata-self-description-declarative-systems",
          "json": "https://banes-lab.com/json/ontology/principles/architecture-category-metadata-self-description-declarative-systems",
          "label": "Metadata / Self-Description / Declarative Systems",
          "markdown": "https://banes-lab.com/ontology/principles/architecture-category-metadata-self-description-declarative-systems.md",
          "ref": "chapter:/ontology#architecture-category-metadata-self-description-declarative-systems"
        },
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-category-core-vocabulary",
          "json": "https://banes-lab.com/json/ontology/lexicon/lexicon-category-core-vocabulary",
          "label": "Core Vocabulary",
          "markdown": "https://banes-lab.com/ontology/lexicon/lexicon-category-core-vocabulary.md",
          "ref": "chapter:/ontology/lexicon#lexicon-category-core-vocabulary"
        },
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-category-metadata-self-description-declarative-systems",
          "json": "https://banes-lab.com/json/ontology/lexicon/lexicon-category-metadata-self-description-declarative-systems",
          "label": "Metadata / Self-Description / Declarative Systems",
          "markdown": "https://banes-lab.com/ontology/lexicon/lexicon-category-metadata-self-description-declarative-systems.md",
          "ref": "chapter:/ontology/lexicon#lexicon-category-metadata-self-description-declarative-systems"
        },
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-category-solid-object-oriented-design",
          "json": "https://banes-lab.com/json/ontology/lexicon/lexicon-category-solid-object-oriented-design",
          "label": "SOLID / Object-Oriented Design",
          "markdown": "https://banes-lab.com/ontology/lexicon/lexicon-category-solid-object-oriented-design.md",
          "ref": "chapter:/ontology/lexicon#lexicon-category-solid-object-oriented-design"
        },
        {
          "href": "https://banes-lab.com/ontology/schema#the-vocabulary-severity",
          "json": "https://banes-lab.com/json/ontology/schema/the-vocabulary-severity",
          "label": "Severity levels",
          "markdown": "https://banes-lab.com/ontology/schema/the-vocabulary-severity.md",
          "ref": "chapter:/ontology/schema#the-vocabulary-severity"
        },
        {
          "href": "https://banes-lab.com/ontology/schema#the-resolutions",
          "json": "https://banes-lab.com/json/ontology/schema/the-resolutions",
          "label": "The resolutions",
          "markdown": "https://banes-lab.com/ontology/schema/the-resolutions.md",
          "ref": "chapter:/ontology/schema#the-resolutions"
        }
      ],
      "relation": "linked-from"
    }
  ],
  "summary": "A mechanism by which a plugin or service lists the operations it supports, so callers test the list instead of probing for methods.",
  "siblings": {
    "next": {
      "href": "https://banes-lab.com/ontology#architecture-manifest-based-design",
      "json": "https://banes-lab.com/json/records/architecture/manifest-based-design",
      "label": "Manifest-Based Design",
      "markdown": "https://banes-lab.com/records/architecture/manifest-based-design.md",
      "ref": "architecture:manifest-based-design"
    },
    "previous": {
      "href": "https://banes-lab.com/ontology#architecture-convention-over-configuration",
      "json": "https://banes-lab.com/json/records/architecture/convention-over-configuration",
      "label": "Convention over Configuration",
      "markdown": "https://banes-lab.com/records/architecture/convention-over-configuration.md",
      "ref": "architecture:convention-over-configuration"
    }
  },
  "up": {
    "href": null,
    "json": "https://banes-lab.com/json/api/records/architecture",
    "label": "Architecture principles",
    "markdown": "https://banes-lab.com/api/records/architecture.md",
    "ref": "api:records/architecture"
  },
  "aliases": [],
  "exemplar": {
    "after": "type FooPlugin = {\n  capabilities: readonly (\"read\" | \"write\" | \"export\")[];\n  exportFoo?: (foo: Foo) => Promise<void>;\n};\nif (plugin.capabilities.includes(\"export\")) await plugin.exportFoo!(foo);",
    "before": "try { await plugin.exportFoo(foo); } catch (error) { if (isMissingMethod(error)) return; }",
    "lang": "ts",
    "medium": "code"
  },
  "formedBy": null,
  "scope": [
    "plugin",
    "service",
    "runtime"
  ],
  "severity": "recommended"
}