diff --git a/src/bom/validation.mts b/src/bom/validation.mts
new file mode 100644
index 0000000..840f864
--- /dev/null
+++ b/src/bom/validation.mts
@@ -0,0 +1,34 @@
+import type { SPDX23 } from '../types/bom/spdx-2.3.schema.ts';
+import type { CdxBom, SupportedBom } from '../types/index.mjs';
+
+function parseBomOrString(bomOrString: string | object): SupportedBom | null {
+  if (typeof bomOrString === 'string') {
+    try {
+      return JSON.parse(bomOrString);
+    } catch (e) {
+      return null;
+    }
+  }
+  return bomOrString as SupportedBom;
+}
+
+export function isCdxBom(bomOrString: string | object): bomOrString is CdxBom {
+  const bom = parseBomOrString(bomOrString);
+  return (
+    bom !== null &&
+    'components' in bom &&
+    'bomFormat' in bom &&
+    bom.bomFormat === 'CycloneDX'
+  );
+}
+
+export function isSpdxBom(bomOrString: string | object): bomOrString is SPDX23 {
+  const bom = parseBomOrString(bomOrString);
+  return bom !== null && 'SPDXID' in bom && bom.SPDXID === 'SPDXRef-Document';
+}
+
+export function isSupportedBom(
+  bomOrString: string | object,
+): bomOrString is SupportedBom {
+  return isCdxBom(bomOrString) || isSpdxBom(bomOrString);
+}
diff --git a/src/index.mts b/src/index.mts
index 802f504..515dd0f 100644
--- a/src/index.mts
+++ b/src/index.mts
@@ -23,6 +23,9 @@ export type {
   ExternalReference,
   Hash,
   License,
+  SPDX23,
+  SupportedBom,
 } from './types/index.mjs';
 
 export { ComponentScope } from './types/index.mjs';
+export { isCdxBom, isSpdxBom, isSupportedBom } from './bom/validation.mjs';
diff --git a/src/types/eol-scan.mts b/src/types/eol-scan.mts
index 3ac274c..04a6b19 100644
--- a/src/types/eol-scan.mts
+++ b/src/types/eol-scan.mts
@@ -37,7 +37,7 @@ export interface EolReport {
 }
 
 export interface EolReportQueryResponse {
-  eol: { report: { result: EolReport | null } };
+  eol: { report: { report: EolReport | null } };
 }
 
 export interface EolReportMutationResponse {
diff --git a/src/types/index.mts b/src/types/index.mts
index 32faf14..69deb94 100644
--- a/src/types/index.mts
+++ b/src/types/index.mts
@@ -1,4 +1,5 @@
 import * as CDX from '@cyclonedx/cyclonedx-library';
+import type { SPDX23 } from './bom/spdx-2.3.schema.ts';
 
 export type CdxBom = CDX.Serialize.JSON.Types.Normalized.Bom;
 export type Component = CDX.Serialize.JSON.Types.Normalized.Component;
@@ -8,4 +9,7 @@ export type License = CDX.Serialize.JSON.Types.Normalized.License;
 export type ExternalReference =
   CDX.Serialize.JSON.Types.Normalized.ExternalReference;
 
+export type { SPDX23 };
+export type SupportedBom = CdxBom | SPDX23;
+
 export const ComponentScope = CDX.Enums.ComponentScope;