diff --git a/agents/eval-verify/agent.py b/agents/eval-verify/agent.py
new file mode 100644
index 0000000..e9ad8b8
--- /dev/null
+++ b/agents/eval-verify/agent.py
@@ -0,0 +1,98 @@
+"""
+Pipeline verification agent — adaptive L-bracket for all 3 rounds.
+
+Generates a valid bracket for any spec in rounds 1-3. Not optimized
+for any metric — purpose is to verify the multi-spec pool eval and CI
+pipeline work correctly for mass, stiffness-to-weight, and deflection.
+
+Close this PR without merging after CI passes all 3 categories.
+"""
+
+from __future__ import annotations
+
+import os
+import tempfile
+
+
+def generate(spec: dict) -> bytes:
+    """Build a parametric L-bracket that fits any spec's constraints."""
+    from OCP.BRepAlgoAPI import BRepAlgoAPI_Cut, BRepAlgoAPI_Fuse
+    from OCP.BRepPrimAPI import BRepPrimAPI_MakeBox, BRepPrimAPI_MakeCylinder
+    from OCP.Interface import Interface_Static
+    from OCP.STEPControl import STEPControl_AsIs, STEPControl_Writer
+    from OCP.gp import gp_Ax2, gp_Dir, gp_Pnt
+
+    c = spec["constraints"]
+    bv = c["build_volume_mm"]       # [x, y, z] max extents
+    bolts = c["bolt_pattern_mm"]    # [[y, z], ...] on mount face
+    bolt_d = c["bolt_diameter_clearance_mm"]
+    load_pt = c["load_point_mm"]    # [x, y, z]
+
+    bvx, bvy, bvz = bv[0], bv[1], bv[2]
+
+    # Bolt extents
+    bolt_ys = [b[0] for b in bolts]
+    bolt_zs = [b[1] for b in bolts]
+    by_max = max(bolt_ys)
+    bz_max = max(bolt_zs)
+
+    # Plate dimensions — clamped to build volume
+    plate_t = min(12.0, bvx * 0.08)
+    plate_y = min(bvy - 2.0, by_max + 12.0)
+    plate_z = min(bvz - 2.0, bz_max + 12.0)
+
+    # Arm: extends from plate to past load point in X, centered on load point Y/Z
+    arm_len = min(bvx - plate_t - 2.0, load_pt[0] + 10.0)
+    arm_w = min(plate_y * 0.8, bvy * 0.7)       # arm width in Y
+    arm_h = min(plate_z * 0.5, bvz * 0.4)       # arm height in Z
+
+    # Center the arm vertically around the load point Z
+    arm_z_lo = max(0.0, load_pt[2] - arm_h / 2)
+    arm_z_hi = arm_z_lo + arm_h
+    if arm_z_hi > bvz - 2.0:
+        arm_z_hi = bvz - 2.0
+        arm_z_lo = max(0.0, arm_z_hi - arm_h)
+
+    # Center arm in Y around load point Y (clamped to plate width)
+    arm_y_lo = max(0.0, min(load_pt[1] - arm_w / 2, plate_y - arm_w))
+    arm_y_hi = arm_y_lo + arm_w
+
+    # Mounting plate
+    plate = BRepPrimAPI_MakeBox(
+        gp_Pnt(0.0, 0.0, 0.0),
+        gp_Pnt(plate_t, plate_y, plate_z),
+    ).Shape()
+
+    # Arm
+    arm = BRepPrimAPI_MakeBox(
+        gp_Pnt(plate_t, arm_y_lo, arm_z_lo),
+        gp_Pnt(plate_t + arm_len, arm_y_hi, arm_z_hi),
+    ).Shape()
+
+    fused = BRepAlgoAPI_Fuse(plate, arm)
+    fused.Build()
+    body = fused.Shape()
+
+    # Bolt clearance holes through mounting plate
+    for by, bz in bolts:
+        by_c = min(max(by, bolt_d / 2 + 1), plate_y - bolt_d / 2 - 1)
+        bz_c = min(max(bz, bolt_d / 2 + 1), plate_z - bolt_d / 2 - 1)
+        axis = gp_Ax2(gp_Pnt(-1.0, by_c, bz_c), gp_Dir(1.0, 0.0, 0.0))
+        hole = BRepPrimAPI_MakeCylinder(axis, bolt_d / 2, plate_t + 2.0).Shape()
+        cut = BRepAlgoAPI_Cut(body, hole)
+        cut.Build()
+        body = cut.Shape()
+
+    # Write STEP
+    writer = STEPControl_Writer()
+    Interface_Static.SetCVal_s("write.step.schema", "AP214IS")
+    writer.Transfer(body, STEPControl_AsIs)
+
+    with tempfile.NamedTemporaryFile(suffix=".step", delete=False) as f:
+        path = f.name
+    try:
+        writer.Write(path)
+        with open(path, "rb") as f:
+            return f.read()
+    finally:
+        os.unlink(path)
diff --git a/scripts/run_eval_pool.py b/scripts/run_eval_pool.py
index 2deda6f..8e3adac 100644
--- a/scripts/run_eval_pool.py
+++ b/scripts/run_eval_pool.py
@@ -53,7 +53,7 @@
             "docker", "run", "--rm",
             "--security-opt", "no-new-privileges",
             "--cap-drop", "ALL",
-            "--pids-limit", "256",
+            "--pids-limit", "512",
             "--memory", "4g",
             "--cpus", "2",
             "-e", f"FORGE_LLM_KEY={llm_key}",
@@ -68,14 +68,24 @@
 
         proc = subprocess.run(cmd, capture_output=True, text=True)
         out = proc.stdout.strip()
+        err = proc.stderr.strip()
         print(f"[{spec_id}] run {run_i + 1}/{runs}: {out}", flush=True)
+        if not out and err:
+            print(f"[{spec_id}] stderr (exit {proc.returncode}): {err[:500]}", flush=True)
+        elif proc.returncode != 0 and not out:
+            print(f"[{spec_id}] docker exited {proc.returncode} with no output", flush=True)
 
         try:
             result_data = json.loads(out)
         except (json.JSONDecodeError, ValueError):
+            reason = f"Invalid JSON output: {out[:120]}"
+            if not out and err:
+                reason = f"Docker error (exit {proc.returncode}): {err[:300]}"
+            elif not out:
+                reason = f"No output from docker (exit {proc.returncode})"
             result_data = {
                 "passed": False,
-                "reason": f"Invalid JSON output: {out[:120]}",
+                "reason": reason,
             }
 
         # Check determinism on first spec