diff --git a/packages/evals-core/src/graders/executors/llm-judge.ts b/packages/evals-core/src/graders/executors/llm-judge.ts
index 274a8ae2..f3113fcf 100644
--- a/packages/evals-core/src/graders/executors/llm-judge.ts
+++ b/packages/evals-core/src/graders/executors/llm-judge.ts
@@ -16,12 +16,18 @@ import { logger } from '../../utils/logger.js';
  * are dropped so credential values never reach the judge LLM — security graders verify
  * secret absence in source deterministically via `notContainsInSource`, and "wired into
  * .env" is an event-based (`wroteFile`) concern, so the judge never needs `.env` content.
+ *
+ * `.md` / `.txt` files are dropped because agents routinely emit large standalone docs
+ * (integration guides, summaries, checklists) that are not source code. They inflate the
+ * corpus — sometimes past `maxCodeChars`, which fails the judge outright — while adding no
+ * signal the judge needs.
  */
 const JUDGE_EXCLUDED_PATTERNS = [
   /^tsconfig(\.\w+)?\.json$/,
   /^angular\.json$/,
   /^tsconfig\.tsbuildinfo$/,
   /\.md$/i,
+  /\.txt$/i,
   /^\.env(\..*)?$/,
 ];
 
diff --git a/packages/evals-core/tests/graders/executors.test.ts b/packages/evals-core/tests/graders/executors.test.ts
index 37c235c5..582969cb 100644
--- a/packages/evals-core/tests/graders/executors.test.ts
+++ b/packages/evals-core/tests/graders/executors.test.ts
@@ -349,6 +349,12 @@ describe('isJudgeExcluded', () => {
     expect(isJudgeExcluded('docs/SETUP.md')).toBe(true);
     expect(isJudgeExcluded('CHANGELOG.MD')).toBe(true);
   });
+
+  it('excludes text files (agent-emitted docs, summaries, checklists)', () => {
+    expect(isJudgeExcluded('IMPLEMENTATION_SUMMARY.txt')).toBe(true);
+    expect(isJudgeExcluded('docs/VERIFICATION_CHECKLIST.txt')).toBe(true);
+    expect(isJudgeExcluded('NOTES.TXT')).toBe(true);
+  });
 });
 
 // ── compile ───────────────────────────────────────────────────────────────────