MCP Fusion
AI-First DX for the Model Context Protocol.

Interface: ActionMetadata ​

Defined in: packages/core/src/core/types.ts:132

Metadata for a single action within a grouped tool.

Returned by ToolBuilder.getActionMetadata for introspection, compliance audits, or dashboard generation.

Example ​

typescript
const meta = builder.getActionMetadata();
for (const action of meta) {
    console.log(`${action.key}: destructive=${action.destructive}`);
}
// Output: "users.create: destructive=false"
//         "users.delete: destructive=true"

See ​

GroupedToolBuilder.getActionMetadata

Properties ​

actionName ​

ts
readonly actionName: string;

Defined in: packages/core/src/core/types.ts:136

Action name within its group

description ​

ts
readonly description: string | undefined;

Defined in: packages/core/src/core/types.ts:140

Human-readable description

destructive ​

ts
readonly destructive: boolean;

Defined in: packages/core/src/core/types.ts:142

Whether this action is destructive

groupName ​

ts
readonly groupName: string | undefined;

Defined in: packages/core/src/core/types.ts:138

Group name (undefined for flat actions)

hasMiddleware ​

ts
readonly hasMiddleware: boolean;

Defined in: packages/core/src/core/types.ts:150

Whether this action has group/action-level middleware

idempotent ​

ts
readonly idempotent: boolean;

Defined in: packages/core/src/core/types.ts:144

Whether this action is idempotent

key ​

ts
readonly key: string;

Defined in: packages/core/src/core/types.ts:134

Full action key (e.g. "admin.create" for grouped, "list" for flat)

presenterHasContextualRules ​

ts
readonly presenterHasContextualRules: boolean | undefined;

Defined in: packages/core/src/core/types.ts:161

Whether the Presenter has dynamic (context-aware) system rules

presenterName ​

ts
readonly presenterName: string | undefined;

Defined in: packages/core/src/core/types.ts:155

Presenter name (if MVA pattern is used via returns: Presenter)

presenterSchemaKeys ​

ts
readonly presenterSchemaKeys: readonly string[] | undefined;

Defined in: packages/core/src/core/types.ts:157

Schema keys exposed by the Presenter (Zod shape keys)

presenterStaticRules ​

ts
readonly presenterStaticRules: readonly string[] | undefined;

Defined in: packages/core/src/core/types.ts:163

Static rule strings for fingerprinting (empty if rules are contextual)

presenterUiBlockTypes ​

ts
readonly presenterUiBlockTypes: readonly string[] | undefined;

Defined in: packages/core/src/core/types.ts:159

UI block types supported by the Presenter (e.g. 'echarts', 'mermaid')

readOnly ​

ts
readonly readOnly: boolean;

Defined in: packages/core/src/core/types.ts:146

Whether this action is read-only

requiredFields ​

ts
readonly requiredFields: readonly string[];

Defined in: packages/core/src/core/types.ts:148

Required field names from the Zod schema