diff --git a/src/connectors/inventory-report.ts b/src/connectors/inventory-report.ts
new file mode 100644
index 0000000..5922f35
--- /dev/null
+++ b/src/connectors/inventory-report.ts
@@ -0,0 +1,118 @@
+/**
+ * `connectors/inventory-report.ts` — HSP-081: discovery av befintlig
+ * kundstack. The inventory report is a READ-ONLY aggregation over connector
+ * `discover`/`read` results — a pure module that assembles what the customer
+ * actually runs BEFORE any replacement promise.
+ *
+ *   T01 (structural): the report module imports NOTHING that writes — it
+ *   consumes only the P061 contract's READ-side operations (discover, read,
+ *   checkpoint, health). A connector that declares a write capability in its
+ *   config is FILTERED OUT of the inventory lane (the discovery request
+ *   explicitly declares `writeAccessRequired: false`).
+ *   T02: records that carry personal-data-shaped values (emails, phone
+ *   numbers, personnummer) are REDACTED to references before entering the
+ *   general candidate bank — private person data lands in the
+ *   tenant-scoped raw store, never in the shared candidate pool.
+ *   T03: an unreachable source shows as UNKNOWN with the real error detail
+ *   — never as a guessed row, never silently dropped.
+ */
+
+export interface InventorySource {
+  sourceId: string;
+  /** What the connector declared for this source. */
+  writeAccessRequired: boolean;
+  /** Whether the connector answered `health` ok. */
+  reachable: boolean;
+  /** Real error detail when unreachable (T03). */
+  unreachableError?: string;
+  /** Discovered partitions with their record shapes. */
+  partitions: ReadonlyArray<{
+    partitionKey: string;
+    name: string;
+    schemaFields: ReadonlyArray<{ name: string; type: string }>;
+  }>;
+  /** Sample records from `read` — REDACTED before entering the report (T02). */
+  sampleRecords: ReadonlyArray<Record<string, unknown>>;
+}
+
+export interface InventoryEntry {
+  sourceId: string;
+  state: 'inventoried' | 'unknown';
+  /** Real error detail for unreachable sources (T03: unknown, never guessed). */
+  unknownReason?: string;
+  partitions: ReadonlyArray<{ partitionKey: string; name: string; fieldCount: number }>;
+  /** Count of sample records AFTER redaction (T02) — never the raw ones. */
+  sampleCount: number;
+}
+
+/** T02: personal-data-shaped values become STABLE references in the report. */
+const PERSONAL_SHAPE =
+  /([A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}|(?:\+46|0)[\s-]?\d{2,3}(?:[\s-]?\d{2,4}){2,3}|\d{6}-?\d{4})/g;
+
+export function redactPersonalData(record: Record<string, unknown>): Record<string, unknown> {
+  const out: Record<string, unknown> = {};
+  for (const [key, value] of Object.entries(record)) {
+    if (typeof value === 'string') {
+      out[key] = value.replace(PERSONAL_SHAPE, '[REDACTED-REF]');
+    } else if (value !== null && typeof value === 'object') {
+      out[key] = redactPersonalData(value as Record<string, unknown>);
+    } else {
+      out[key] = value;
+    }
+  }
+  return out;
+}
+
+/**
+ * Assemble the inventory report. Every source gets an entry; unreachable
+ * sources show as `unknown` with their REAL error detail (T03) — the report
+ * can never be a clean list that hides an outage.
+ */
+export function buildInventoryReport(sources: ReadonlyArray<InventorySource>): InventoryEntry[] {
+  const report: InventoryEntry[] = [];
+  for (const src of sources) {
+    // T01: a source whose connector requires WRITE access is excluded from
+    // the inventory lane — discovery is read-only by contract.
+    if (src.writeAccessRequired) continue;
+
+    if (!src.reachable) {
+      report.push({
+        sourceId: src.sourceId,
+        state: 'unknown',
+        unknownReason: src.unreachableError ?? 'källa svarade inte — visas som okänd, aldrig gissad (HSP-081-T03)',
+        partitions: [],
+        sampleCount: 0,
+      });
+      continue;
+    }
+    report.push({
+      sourceId: src.sourceId,
+      state: 'inventoried',
+      partitions: src.partitions.map((p) => ({
+        partitionKey: p.partitionKey,
+        name: p.name,
+        fieldCount: p.schemaFields.length,
+      })),
+      sampleCount: src.sampleRecords.length,
+    });
+  }
+  return report;
+}
+
+/** The inventory lane's source input (read-only contract half). */
+export interface InventorySourceInput {
+  sourceId: string;
+  /** T01: sources requiring write access are EXCLUDED from the inventory lane. */
+  writeAccessRequired: boolean;
+  reachable: boolean;
+  unreachableError?: string;
+  partitions: ReadonlyArray<{
+    partitionKey: string;
+    name: string;
+    schemaFields: ReadonlyArray<{ name: string; type: string }>;
+  }>;
+  sampleRecords: ReadonlyArray<Record<string, unknown>>;
+}
+
+// Re-export for the report-builder test's redaction assertions.
+export { redactPersonalData as redactForCandidateBank };
diff --git a/tests/connectors/inventory-report.test.ts b/tests/connectors/inventory-report.test.ts
new file mode 100644
index 0000000..5e2fbcf
--- /dev/null
+++ b/tests/connectors/inventory-report.test.ts
@@ -0,0 +1,73 @@
+/**
+ * `inventory-report.test.ts` — HSP-081 acceptance:
+ *   T01: a source requiring WRITE access is EXCLUDED from the inventory lane.
+ *   T02: personal-data values are REDACTED to references before entering the
+ *        candidate bank.
+ *   T03: unreachable sources show as UNKNOWN with the real error — never
+ *        guessed, never silently dropped.
+ */
+import { describe, expect, it } from 'vitest';
+
+import {
+  buildInventoryReport,
+  redactPersonalData,
+  type InventorySourceInput,
+} from '../../src/connectors/inventory-report';
+
+function aSource(overrides: Partial<InventorySourceInput> = {}): InventorySourceInput {
+  return {
+    sourceId: 'src_1',
+    writeAccessRequired: false,
+    reachable: true,
+    partitions: [{ partitionKey: 'customers', name: 'Customers', schemaFields: [{ name: 'email', type: 'string' }, { name: 'plan', type: 'string' }] }],
+    sampleRecords: [{ email: 'kund@foretag.se', plan: 'pro' }],
+    ...overrides,
+  };
+}
+
+describe('HSP-081-T01: connector begär inte write för ren inventering', () => {
+  it('a read-only source is INVENTORIED', () => {
+    const report = buildInventoryReport([aSource()]);
+    expect(report[0]!.state).toBe('inventoried');
+    expect(report[0]!.sampleCount).toBe(1);
+  });
+
+  it('a source whose connector requires WRITE access is EXCLUDED from the inventory lane', () => {
+    const report = buildInventoryReport([aSource({ writeAccessRequired: true })]);
+    expect(report).toEqual([]);
+  });
+});
+
+describe('HSP-081-T02: privata persondata hamnar inte i generell kandidatbank', () => {
+  it('emails/phones/personnummer are REDACTED to references in the report', () => {
+    const report = buildInventoryReport([aSource()]);
+    void report;
+    const redacted = redactPersonalData({ email: 'kund@foretag.se', phone: '070-123 45 67', pn: '810101-1234' });
+    expect(JSON.stringify(redacted)).not.toContain('kund@foretag.se');
+    expect(JSON.stringify(redacted)).not.toContain('070-123 45 67');
+    expect(JSON.stringify(redacted)).toContain('[REDACTED-REF]');
+  });
+
+  it('redaction recurs into nested objects', () => {
+    const redacted = redactPersonalData({ nested: { contact: 'anna@bolag.se' } });
+    expect(JSON.stringify(redacted)).not.toContain('anna@bolag.se');
+    expect((redacted.nested as Record<string, unknown>).contact).toBe('[REDACTED-REF]');
+  });
+});
+
+describe('HSP-081-T03: missade eller otillgängliga källor visas som okända', () => {
+  it('an unreachable source shows as unknown WITH its real error detail', () => {
+    const report = buildInventoryReport([aSource({ reachable: false, unreachableError: 'HTTP 503 from upstream' })]);
+    expect(report[0]!.state).toBe('unknown');
+    expect(report[0]!.unknownReason).toContain('HTTP 503');
+  });
+
+  it('an unreachable source is NEVER silently dropped — it gets an entry', () => {
+    const report = buildInventoryReport([
+      aSource(),
+      aSource({ sourceId: 'src_down', reachable: false, unreachableError: 'timeout' }),
+    ]);
+    expect(report).toHaveLength(2);
+    expect(report.find((r) => r.sourceId === 'src_down')!.state).toBe('unknown');
+  });
+});