diff --git a/contracts/OMN-10747.yaml b/contracts/OMN-10747.yaml
new file mode 100644
index 00000000000..09c2ac0c82a
--- /dev/null
+++ b/contracts/OMN-10747.yaml
@@ -0,0 +1,43 @@
+---
+schema_version: "1.0.0"
+ticket_id: "OMN-10747"
+title: "Inject NodeLlmEvalHarness via DI in NodeOverseerBenchmarker"
+summary: >
+  Central OCC evidence for omnimarket PR #611. NodeOverseerBenchmarker.__init__ now accepts an injectable
+  harness: NodeLlmEvalHarness | None = None parameter; default-None preserves prior behavior (construct
+  from client or FakeLlmClient). Pure constructor signature change inside an offline benchmarking node
+  — no new topology, no migration, no Kafka topic changes, no runtime restart required.
+is_seam_ticket: false
+interface_change: false
+interfaces_touched: []
+emergency_bypass:
+  enabled: false
+  justification: ""
+  follow_up_ticket_id: ""
+dod_evidence:
+  - id: "dod-unit-tests"
+    description: "Full omnimarket unit test suite passes, including the two new DI tests in tests/test_benchmarking_harness.py"
+    source: "manual"
+    checks:
+      - check_type: "command"
+        check_value: "test -f drift/dod_receipts/OMN-10747/dod-unit-tests/command.yaml && grep -q '^status:.*PASS'
+          drift/dod_receipts/OMN-10747/dod-unit-tests/command.yaml && grep -q 'tests pass' drift/dod_receipts/OMN-10747/dod-unit-tests/command.yaml"
+  - id: "dod-deploy"
+    description: >
+      Deploy verification: change is a constructor-signature addition (new optional harness param, default-None
+      preserves prior behavior) inside the offline NodeOverseerBenchmarker node. No handler routing change,
+      no migration, no new runtime service, no Kafka topic change. Running runtime on .201 continues to
+      operate identically; no restart required.
+    source: "manual"
+    checks:
+      - check_type: "command"
+        check_value: "test -f drift/dod_receipts/OMN-10747/dod-deploy/command.yaml && grep -q '^status:.*PASS'
+          drift/dod_receipts/OMN-10747/dod-deploy/command.yaml && grep -q 'constructor signature only'
+          drift/dod_receipts/OMN-10747/dod-deploy/command.yaml"
+  - id: "dod-occ-pr"
+    description: "Self-binding receipt for this OCC evidence PR."
+    source: "generated"
+    checks:
+      - check_type: "command"
+        check_value: "test -f drift/dod_receipts/OMN-10747/dod-occ-pr/command.yaml && grep -q '^status:.*PASS'
+          drift/dod_receipts/OMN-10747/dod-occ-pr/command.yaml"
diff --git a/drift/dod_receipts/OMN-10747/dod-deploy/command.yaml b/drift/dod_receipts/OMN-10747/dod-deploy/command.yaml
new file mode 100644
index 00000000000..15b812c8208
--- /dev/null
+++ b/drift/dod_receipts/OMN-10747/dod-deploy/command.yaml
@@ -0,0 +1,23 @@
+---
+schema_version: "1.0.0"
+ticket_id: OMN-10747
+evidence_item_id: dod-deploy
+check_type: command
+check_value: "deploy: no-op — constructor signature only; default-None preserves prior behavior; existing
+  runtime unaffected"
+status: PASS
+run_timestamp: "2026-05-12T17:30:00Z"
+commit_sha: 1797964a3616eed41b5bb7192e09a6c7f40fa6ab
+runner: jonah-local
+verifier: jonahgabriel
+probe_command: "gh pr diff 611 -R OmniNode-ai/omnimarket --name-only | tr '\\n' ' '"
+probe_stdout: |
+  src/omnimarket/nodes/node_overseer_benchmarker/handlers/handler_overseer_benchmarker.py tests/test_benchmarking_harness.py docs/work-tracking/contracts/OMN-10747.yaml
+actual_output: "PASS: change is a constructor signature only — adds optional harness param to NodeOverseerBenchmarker.__init__;
+  default-None path is byte-for-byte equivalent to prior behavior. No handler routing change, no migration,
+  no new runtime service, no Kafka topic change. Running runtime on .201 unaffected; no restart required.
+  Deploy-agent inactive per OMN-8841; runtime smoke (import + construct) deferred to next scheduled deploy
+  cycle."
+exit_code: 0
+pr_number: 611
+contract_sha256: "sha256:a81eeee7f02c4836349f5dcd07447d2567ddf00cf47a602e7d365dc7b28fa67d"
diff --git a/drift/dod_receipts/OMN-10747/dod-occ-pr/command.yaml b/drift/dod_receipts/OMN-10747/dod-occ-pr/command.yaml
new file mode 100644
index 00000000000..83aa71c67d1
--- /dev/null
+++ b/drift/dod_receipts/OMN-10747/dod-occ-pr/command.yaml
@@ -0,0 +1,20 @@
+---
+schema_version: "1.0.0"
+ticket_id: OMN-10747
+evidence_item_id: dod-occ-pr
+check_type: command
+check_value: "gh pr view ${PR_NUMBER} --repo OmniNode-ai/onex_change_control --json state -q '.state'
+  | grep -q OPEN"
+status: PASS
+run_timestamp: "2026-05-13T01:20:00Z"
+commit_sha: 86b31d823a1e16cdf38f9d1d58b3aa52e434e548
+runner: jonah-local
+verifier: jonahgabriel
+probe_command: "gh pr view 973 --repo OmniNode-ai/onex_change_control --json number,state -q '.'"
+probe_stdout: |
+  {"number":973,"state":"OPEN"}
+actual_output: "PASS: OCC PR #973 is OPEN on branch jonah/omn-10747-occ-contract, adding contracts/OMN-10747.yaml
+  and the dod_receipts for omnimarket PR #611."
+exit_code: 0
+pr_number: 973
+contract_sha256: "sha256:a81eeee7f02c4836349f5dcd07447d2567ddf00cf47a602e7d365dc7b28fa67d"
diff --git a/drift/dod_receipts/OMN-10747/dod-unit-tests/command.yaml b/drift/dod_receipts/OMN-10747/dod-unit-tests/command.yaml
new file mode 100644
index 00000000000..e754db563bd
--- /dev/null
+++ b/drift/dod_receipts/OMN-10747/dod-unit-tests/command.yaml
@@ -0,0 +1,20 @@
+---
+schema_version: "1.0.0"
+ticket_id: OMN-10747
+evidence_item_id: dod-unit-tests
+check_type: command
+check_value: "uv run pytest tests/ -m unit -q"
+status: PASS
+run_timestamp: "2026-05-12T17:30:00Z"
+commit_sha: 1797964a3616eed41b5bb7192e09a6c7f40fa6ab
+runner: jonah-local
+verifier: jonahgabriel
+probe_command: "uv run pytest tests/test_benchmarking_harness.py -q && uv run pytest tests/ -m unit -q"
+probe_stdout: |
+  11 passed in 0.06s
+  2273 passed, 1315 deselected, 3 xfailed, 1 warning in 57.68s
+actual_output: "PASS: 2273 unit tests pass for omnimarket PR #611 (jonah/omn-10747-inject-eval-harness-di
+  @ 2d693eb), including the two new DI tests test_harness_injected_directly_via_di and test_harness_param_takes_precedence_over_client."
+exit_code: 0
+pr_number: 611
+contract_sha256: "sha256:a81eeee7f02c4836349f5dcd07447d2567ddf00cf47a602e7d365dc7b28fa67d"