diff --git a/artifacts/evidence_index.json b/artifacts/evidence_index.json
index f6f55b2..2ad2d0d 100644
--- a/artifacts/evidence_index.json
+++ b/artifacts/evidence_index.json
@@ -64,6 +64,29 @@
       "evidence_bearing": true,
       "visualization_only": false
     },
+    {
+      "path": "artifacts/mcp_trace_corruption_manifest.json",
+      "format": "json",
+      "generator": "scripts/generate_mcp_trace_corruptions.py",
+      "evidence_category": "corruption_manifest",
+      "evidence_role": "deterministic MCP trace corruption manifest evidence",
+      "fixture_families": [
+        "mcp_trace_replay"
+      ],
+      "top_level_keys": [
+        "allowed_operators",
+        "corruptions",
+        "manifest_id",
+        "summary",
+        "version"
+      ],
+      "deterministic_evaluation": true,
+      "llm_judges": "none",
+      "external_apis": "none",
+      "manifest_aligned": false,
+      "evidence_bearing": true,
+      "visualization_only": false
+    },
     {
       "path": "artifacts/mcp_trace_replay_results.json",
       "format": "json",
@@ -188,13 +211,13 @@
     }
   ],
   "global_summary": {
-    "artifact_count": 7,
-    "json_artifact_count": 6,
+    "artifact_count": 8,
+    "json_artifact_count": 7,
     "svg_artifact_count": 1,
-    "evidence_bearing_count": 6,
+    "evidence_bearing_count": 7,
     "visualization_only_count": 1,
-    "deterministic_artifact_count": 7,
-    "llm_free_artifact_count": 7,
-    "external_api_free_artifact_count": 7
+    "deterministic_artifact_count": 8,
+    "llm_free_artifact_count": 8,
+    "external_api_free_artifact_count": 8
   }
 }
diff --git a/scripts/generate_evidence_index.py b/scripts/generate_evidence_index.py
index 3f14d14..8f758b9 100644
--- a/scripts/generate_evidence_index.py
+++ b/scripts/generate_evidence_index.py
@@ -3,6 +3,7 @@
 from __future__ import annotations
 
 import json
+import re
 from pathlib import Path
 from typing import Any
 
@@ -29,6 +30,15 @@
         "evidence_bearing": True,
         "visualization_only": False,
     },
+    {
+        "path": "artifacts/mcp_trace_corruption_manifest.json",
+        "format": "json",
+        "generator": "scripts/generate_mcp_trace_corruptions.py",
+        "evidence_category": "corruption_manifest",
+        "evidence_role": "deterministic MCP trace corruption manifest evidence",
+        "evidence_bearing": True,
+        "visualization_only": False,
+    },
     {
         "path": "artifacts/mcp_trace_replay_results.json",
         "format": "json",
@@ -85,6 +95,11 @@ def _manifest_families() -> set[str]:
     manifest = _load_json(MANIFEST_PATH)
     return {str(fixture["family"]) for fixture in manifest["fixtures"]}
 
+def _family_from_fixture_slug(slug: str) -> str | None:
+    match = re.match(r"^(?P<family>.+)_[^_]+_v\d+$", slug)
+    if not match:
+        return None
+    return match.group("family")
 
 def _extract_fixture_families(payload: dict[str, Any]) -> list[str]:
     families: set[str] = set()
@@ -94,6 +109,18 @@ def _extract_fixture_families(payload: dict[str, Any]) -> list[str]:
                 families.add(family["family"])
     if isinstance(payload.get("family"), str):
         families.add(payload["family"])
+
+    if isinstance(payload.get("corruptions"), list):
+        for corruption in payload["corruptions"]:
+            if not isinstance(corruption, dict):
+                continue
+            source_fixture = corruption.get("source_fixture")
+            if not isinstance(source_fixture, str):
+                continue
+            fixture_slug = source_fixture.rsplit("/", 1)[-1]
+            family = _family_from_fixture_slug(fixture_slug)
+            if family:
+                families.add(family)
     return sorted(families)