diff --git a/eval_protocol/cli_commands/create_rft.py b/eval_protocol/cli_commands/create_rft.py
index cb78fbae..9580340a 100644
--- a/eval_protocol/cli_commands/create_rft.py
+++ b/eval_protocol/cli_commands/create_rft.py
@@ -1,6 +1,8 @@
 import json
 import os
 import sys
+import time
+import argparse
 from typing import Any, Dict, Optional
 
 from ..auth import (
@@ -11,13 +13,8 @@
 )
 from ..fireworks_rft import (
     _map_api_host_to_app_host,
-    build_default_dataset_id,
-    build_default_output_model,
     create_dataset_from_jsonl,
     create_reinforcement_fine_tuning_job,
-    detect_dataset_builder,
-    load_evaluator_trace,
-    materialize_dataset_via_builder,
 )
 from .upload import _discover_tests, _normalize_evaluator_id, _resolve_entry_to_qual_and_source
 
@@ -58,6 +55,129 @@ def _print_links(evaluator_id: str, dataset_id: str, job_name: Optional[str]) ->
             pass
 
 
+def _auto_find_jsonl(cwd: str) -> Optional[str]:
+    """Find a reasonable JSONL dataset file in the current project.
+
+    Priority order:
+    - dataset.jsonl in cwd
+    - data/dataset.jsonl
+    - first *.jsonl under cwd (depth-first, skipping common vendor/venv/build dirs)
+    Returns a RELATIVE path from cwd if possible.
+    """
+    # Direct candidates
+    direct_candidates = [
+        os.path.join(cwd, "dataset.jsonl"),
+        os.path.join(cwd, "data", "dataset.jsonl"),
+    ]
+    for p in direct_candidates:
+        if os.path.isfile(p):
+            try:
+                return os.path.relpath(p, cwd)
+            except Exception:
+                return p
+
+    # Walk and find any .jsonl
+    skip_dirs = {".venv", "venv", "node_modules", "dist", "build", "__pycache__", ".git", "vendor"}
+    for dirpath, dirnames, filenames in os.walk(cwd):
+        # prune
+        dirnames[:] = [d for d in dirnames if d not in skip_dirs and not d.startswith(".")]
+        for name in sorted(filenames):
+            if name.endswith(".jsonl"):
+                candidate = os.path.join(dirpath, name)
+                try:
+                    return os.path.relpath(candidate, cwd)
+                except Exception:
+                    return candidate
+    return None
+
+
+def _extract_jsonl_from_dataloader(test_file_path: str, test_func_name: str) -> Optional[str]:
+    """Import the test module and extract a JSONL path from data_loaders param if present.
+
+    Looks for a pytest.mark.parametrize with argnames containing 'data_loaders' and attempts to
+    find an object with attribute 'jsonl_path'. If a relative path is found, it is resolved
+    relative to the directory of the test file.
+    """
+    try:
+        import importlib.util
+        from pathlib import Path
+
+        spec = importlib.util.spec_from_file_location(Path(test_file_path).stem, test_file_path)
+        if not spec or not spec.loader:
+            return None
+        module = importlib.util.module_from_spec(spec)
+        sys.modules[spec.name] = module
+        spec.loader.exec_module(module)  # type: ignore[attr-defined]
+        if not hasattr(module, test_func_name):
+            return None
+        wrapper = getattr(module, test_func_name)
+        marks = getattr(wrapper, "pytestmark", [])
+        for m in marks:
+            if getattr(m, "name", "") == "parametrize":
+                kwargs = getattr(m, "kwargs", {})
+                argnames = kwargs.get("argnames", (m.args[0] if m.args else []))
+                argvalues = kwargs.get("argvalues", (m.args[1] if len(m.args) > 1 else []))
+                # Normalize argnames to list
+                if isinstance(argnames, str):
+                    names_list = [n.strip() for n in argnames.split(",") if n.strip()]
+                else:
+                    names_list = list(argnames)
+                if "data_loaders" not in names_list:
+                    continue
+                idx = names_list.index("data_loaders")
+                # argvalues is a list of tuples/values aligned with argnames
+                for val in argvalues:
+                    # Normalize to tuple
+                    if not isinstance(val, (tuple, list)):
+                        params = (val,)
+                    else:
+                        params = tuple(val)
+                    if idx >= len(params):
+                        continue
+                    dataloaders_obj = params[idx]
+                    # May be a list or single loader
+                    candidates = (
+                        list(dataloaders_obj) if isinstance(dataloaders_obj, (list, tuple)) else [dataloaders_obj]
+                    )
+                    for dl in candidates:
+                        jsonl_path = getattr(dl, "jsonl_path", None)
+                        if isinstance(jsonl_path, str) and jsonl_path:
+                            if os.path.isabs(jsonl_path):
+                                return jsonl_path
+                            base_dir = os.path.dirname(os.path.abspath(test_file_path))
+                            return os.path.abspath(os.path.join(base_dir, jsonl_path))
+        return None
+    except Exception:
+        return None
+
+
+def _build_trimmed_dataset_id(evaluator_id: str) -> str:
+    """Build a dataset id derived from evaluator_id, trimmed to 63 chars.
+
+    Format: <normalized-base>-dataset-YYYYMMDDHHMMSS, where base is trimmed to fit.
+    """
+    # Normalize base similarly to evaluator id rules
+    from .upload import _normalize_evaluator_id  # local import to avoid cycle at module import time
+
+    base = _normalize_evaluator_id(evaluator_id)
+    suffix = f"-dataset-{time.strftime('%Y%m%d%H%M%S')}"
+    max_total = 63
+    max_base_len = max_total - len(suffix)
+    if max_base_len < 1:
+        max_base_len = 1
+    if len(base) > max_base_len:
+        base = base[:max_base_len].rstrip("-")
+        if not base:
+            base = "dataset"
+    # Ensure first char is a letter
+    if not base[0].isalpha():
+        base = f"eval-{base}"
+        if len(base) > max_base_len:
+            base = base[:max_base_len]
+            base = base.rstrip("-") or "dataset"
+    return f"{base}{suffix}"
+
+
 def _auto_select_evaluator_id(cwd: str) -> Optional[str]:
     # Try local traces
     traces_dir = os.path.join(cwd, ".eval_protocol", "evaluators")
@@ -101,60 +221,100 @@ def create_rft_command(args) -> int:
             print("Error: Could not infer evaluator id. Provide --evaluator-id or run 'eval-protocol upload' first.")
             return 1
 
-    # Resolve evaluator resource name via local trace
-    # trace = load_evaluator_trace(project_root, evaluator_id)
-    # if not trace or not isinstance(trace, dict):
-    #     print(
-    #         "Error: Evaluator trace not found. Run 'eval-protocol upload' first or provide --dataset-id/--dataset-jsonl and --evaluator-id."
-    #     )
-    #     return 1
-    # evaluator_resource_name = trace.get("evaluator_resource_name") or trace.get("name") or evaluator_id
-    evaluator_resource_name = evaluator_id
+    # Resolve evaluator resource name to fully-qualified format required by API
+    evaluator_resource_name = f"accounts/{account_id}/evaluators/{evaluator_id}"
+
+    # Ensure evaluator exists by invoking the upload flow programmatically
+    try:
+        from .upload import upload_command
+
+        tests = _discover_tests(project_root)
+        selected_entry: Optional[str] = None
+        if len(tests) == 1:
+            func_name = tests[0].qualname.split(".")[-1]
+            abs_path = os.path.abspath(tests[0].file_path)
+            try:
+                rel = os.path.relpath(abs_path, project_root)
+            except Exception:
+                rel = abs_path
+            selected_entry = f"{rel}::{func_name}"
+        else:
+            # Try to match evaluator_id to a discovered test's normalized ID
+            for t in tests:
+                func_name = t.qualname.split(".")[-1]
+                source_file_name = os.path.splitext(os.path.basename(t.file_path))[0]
+                candidate = _normalize_evaluator_id(f"{source_file_name}-{func_name}")
+                if candidate == evaluator_id:
+                    abs_path = os.path.abspath(t.file_path)
+                    try:
+                        rel = os.path.relpath(abs_path, project_root)
+                    except Exception:
+                        rel = abs_path
+                    selected_entry = f"{rel}::{func_name}"
+                    break
+
+        upload_args = argparse.Namespace(
+            path=project_root,
+            entry=selected_entry,
+            id=evaluator_id,
+            display_name=None,
+            description=None,
+            force=False,
+            yes=True,
+        )
+        rc = upload_command(upload_args)
+        if rc == 0:
+            print(f"✓ Uploaded/ensured evaluator: {evaluator_id}")
+        else:
+            print("Warning: Evaluator upload did not complete successfully; proceeding to RFT creation.")
+    except Exception as e:
+        print(f"Warning: Failed to upload evaluator automatically: {e}")
 
     # Determine dataset id and materialization path
     dataset_id = getattr(args, "dataset_id", None)
     dataset_jsonl = getattr(args, "dataset_jsonl", None)
     dataset_display_name = getattr(args, "dataset_display_name", None)
-    dataset_builder = getattr(args, "dataset_builder", None)
+    dataset_builder = getattr(args, "dataset_builder", None)  # accepted but unused in simplified flow
 
     if not dataset_id:
-        # Try builder from args, else from trace detection
-        # TODO: build dataset from traces directly
-        # builder_spec = dataset_builder or trace.get("dataset_builder")
-        # if not builder_spec:
-        #     # Attempt detect from metric_dir
-        #     metric_dir = trace.get("metric_dir")
-        #     if metric_dir:
-        #         builder_spec = detect_dataset_builder(metric_dir)
-        # if not builder_spec:
-        #     print(
-        #         "Error: Could not determine dataset. Provide --dataset-id, --dataset-jsonl, or --dataset-builder."
-        #     )
-        #     return 1
-        # try:
-        #     dataset_jsonl, count = materialize_dataset_via_builder(builder_spec)
-        #     print(f"✓ Materialized dataset via builder ({builder_spec}): {count} rows → {dataset_jsonl}")
-        # except Exception as e:
-        #     print(f"Error: dataset builder failed: {e}")
-        #     return 1
-
+        # Prefer explicit --dataset-jsonl, else attempt to extract from data loader of the single discovered test
         if not dataset_jsonl:
-            print("Error: Could not determine dataset. Provide --dataset-id or --dataset-jsonl.")
+            tests = _discover_tests(project_root)
+            if len(tests) == 1:
+                func_name = tests[0].qualname.split(".")[-1]
+                dataset_jsonl = _extract_jsonl_from_dataloader(tests[0].file_path, func_name)
+                if dataset_jsonl:
+                    # Display relative path for readability
+                    try:
+                        rel = os.path.relpath(dataset_jsonl, project_root)
+                    except Exception:
+                        rel = dataset_jsonl
+                    print(f"✓ Using JSONL from data loader: {rel}")
+        if not dataset_jsonl:
+            print(
+                "Error: Could not determine dataset. Provide --dataset-id or --dataset-jsonl, or ensure a JSONL-based data loader is used in your single discovered test."
+            )
             return 1
 
-        inferred_dataset_id = build_default_dataset_id(evaluator_id)
+        inferred_dataset_id = _build_trimmed_dataset_id(evaluator_id)
         if dry_run:
             print("--dry-run: would create dataset and upload JSONL")
             dataset_id = inferred_dataset_id
         else:
             try:
+                # Resolve dataset_jsonl path relative to CWD if needed
+                jsonl_path_for_upload = (
+                    dataset_jsonl
+                    if os.path.isabs(dataset_jsonl)
+                    else os.path.abspath(os.path.join(project_root, dataset_jsonl))
+                )
                 dataset_id, _ = create_dataset_from_jsonl(
                     account_id=account_id,
                     api_key=api_key,
                     api_base=api_base,
                     dataset_id=inferred_dataset_id,
                     display_name=dataset_display_name or inferred_dataset_id,
-                    jsonl_path=dataset_jsonl,
+                    jsonl_path=jsonl_path_for_upload,
                 )
                 print(f"✓ Created and uploaded dataset: {dataset_id}")
             except Exception as e:
@@ -162,14 +322,16 @@ def create_rft_command(args) -> int:
                 return 1
 
     # Build training config/body
-    training_config: Dict[str, Any] = {}
-    if getattr(args, "base_model", None):
-        training_config["baseModel"] = args.base_model
+    # Ensure base model is explicitly provided for clarity
+    if not getattr(args, "base_model", None):
+        print(
+            "Error: --base-model is required. Please specify the base model resource id (e.g., accounts/{account}/models/<model_id>)."
+        )
+        return 1
+
+    training_config: Dict[str, Any] = {"baseModel": args.base_model}
     if getattr(args, "warm_start_from", None):
         training_config["warmStartFrom"] = args.warm_start_from
-    if "baseModel" not in training_config and "warmStartFrom" not in training_config:
-        # Provide a conservative default if neither is set
-        training_config["baseModel"] = "accounts/fireworks/models/llama-v3p1-8b-instruct"
 
     # Optional hyperparameters
     for key, arg_name in [
@@ -221,14 +383,12 @@ def create_rft_command(args) -> int:
         "outputMetrics": None,
         "mcpServer": None,
     }
-    print("Show body:")
-    print(json.dumps(body, indent=2))
+    # Debug: print minimal summary
+    print(f"Prepared RFT job for evaluator '{evaluator_id}' using dataset '{dataset_id}'")
     if getattr(args, "evaluation_dataset", None):
         body["evaluationDataset"] = args.evaluation_dataset
     if getattr(args, "output_model", None):
         body.setdefault("trainingConfig", {})["outputModel"] = f"accounts/{account_id}/models/{args.output_model}"
-    else:
-        body.setdefault("trainingConfig", {})["outputModel"] = build_default_output_model(evaluator_id)
 
     # Clean None fields to avoid noisy payloads
     body = {k: v for k, v in body.items() if v is not None}
diff --git a/eval_protocol/data_loader/__init__.py b/eval_protocol/data_loader/__init__.py
index 4c92b023..fbd4d3ce 100644
--- a/eval_protocol/data_loader/__init__.py
+++ b/eval_protocol/data_loader/__init__.py
@@ -1,4 +1,5 @@
 from .dynamic_data_loader import DynamicDataLoader
 from .inline_data_loader import InlineDataLoader
+from .jsonl_data_loader import EvaluationRowJsonlDataLoader
 
-__all__ = ["DynamicDataLoader", "InlineDataLoader"]
+__all__ = ["DynamicDataLoader", "InlineDataLoader", "EvaluationRowJsonlDataLoader"]
diff --git a/eval_protocol/data_loader/jsonl_data_loader.py b/eval_protocol/data_loader/jsonl_data_loader.py
new file mode 100644
index 00000000..dd607f09
--- /dev/null
+++ b/eval_protocol/data_loader/jsonl_data_loader.py
@@ -0,0 +1,42 @@
+from __future__ import annotations
+
+import os
+from dataclasses import dataclass
+from collections.abc import Sequence
+
+from eval_protocol.common_utils import load_jsonl
+from eval_protocol.pytest.default_dataset_adapter import default_dataset_adapter
+from eval_protocol.data_loader.models import (
+    DataLoaderResult,
+    DataLoaderVariant,
+    EvaluationDataLoader,
+)
+
+
+@dataclass(kw_only=True)
+class EvaluationRowJsonlDataLoader(EvaluationDataLoader):
+    """Data loader that reads EvaluationRows from a JSONL file path.
+
+    Each line of the JSONL file should be a serialized EvaluationRow dict.
+    The loader will construct EvaluationRow objects via the default dataset adapter.
+    """
+
+    jsonl_path: str
+    id: str = "jsonl"
+    description: str | None = None
+
+    def variants(self) -> Sequence[DataLoaderVariant]:
+        def _load() -> DataLoaderResult:
+            path = self.jsonl_path
+            if not os.path.isabs(path):
+                path = os.path.abspath(path)
+            rows_json = load_jsonl(path)
+            eval_rows = default_dataset_adapter(rows_json)
+            return DataLoaderResult(
+                rows=eval_rows,
+                type=self.__class__.__name__,
+                variant_id=self.id,
+                variant_description=self.description,
+            )
+
+        return [_load]
diff --git a/eval_protocol/fireworks_rft.py b/eval_protocol/fireworks_rft.py
index 3fd44eaa..6bd2e62e 100644
--- a/eval_protocol/fireworks_rft.py
+++ b/eval_protocol/fireworks_rft.py
@@ -18,12 +18,20 @@ def _map_api_host_to_app_host(api_base: str) -> str:
         from urllib.parse import urlparse
 
         parsed = urlparse(api_base)
-        host = parsed.netloc or parsed.path
+        host = (parsed.netloc or parsed.path).lower()
+        scheme = parsed.scheme or "https"
+
+        # Explicit mappings first
         if host.startswith("dev.api.fireworks.ai"):
-            return f"{parsed.scheme or 'https'}://dev.fireworks.ai"
+            return f"{scheme}://dev.fireworks.ai"
+        if host == "staging.api.fireworks.ai" or host == "api.fireworks.ai":
+            return f"{scheme}://app.fireworks.ai"
+
+        # Generic mapping: api.<...> → app.<...>
         if host.startswith("api."):
-            return f"{parsed.scheme or 'https'}://{host.replace('api.', 'app.', 1)}"
-        return f"{parsed.scheme or 'https'}://{host}"
+            return f"{scheme}://{host.replace('api.', 'app.', 1)}"
+
+        return f"{scheme}://{host}"
     except Exception:
         return "https://app.fireworks.ai"
 
diff --git a/tests/pytest/gsm8k/test_pytest_math_example.py b/tests/pytest/gsm8k/test_pytest_math_example.py
index 0ac994c7..961ff479 100644
--- a/tests/pytest/gsm8k/test_pytest_math_example.py
+++ b/tests/pytest/gsm8k/test_pytest_math_example.py
@@ -1,19 +1,34 @@
 import re
 from eval_protocol.models import EvaluateResult, EvaluationRow, MetricResult, Message
 from eval_protocol.pytest import SingleTurnRolloutProcessor, evaluation_test
+import os
+from eval_protocol.data_loader.jsonl_data_loader import EvaluationRowJsonlDataLoader
 from typing import List, Dict, Any, Optional
 
 
 def extract_answer_digits(ground_truth: str) -> Optional[str]:
     """
-    Extract the digits from the answer string.
+    Extract the first sequence of digits within <answer>...</answer> tags.
+
+    Returns None if tags are missing or no digits are found.
     """
-    answer_string = ground_truth.split("<answer>")[1].split("</answer>")[0]
-    return re.search(r"(\d+)", answer_string).group(1) if answer_string else None
+    if not ground_truth:
+        return None
+
+    match = re.search(r"<answer>(.*?)</answer>", ground_truth, flags=re.IGNORECASE | re.DOTALL)
+    if not match:
+        return None
+
+    answer_string = match.group(1)
+    digits_match = re.search(r"(\d+)", answer_string)
+    return digits_match.group(1) if digits_match else None
+
+
+JSONL_PATH = os.path.abspath(os.path.join(os.path.dirname(__file__), "../../../development/gsm8k_sample.jsonl"))
 
 
 @evaluation_test(
-    input_dataset=["development/gsm8k_sample.jsonl"],
+    data_loaders=EvaluationRowJsonlDataLoader(jsonl_path=JSONL_PATH),
     completion_params=[{"temperature": 0.0, "model": "fireworks_ai/accounts/fireworks/models/gpt-oss-120b"}],
     max_dataset_rows=5,
     passed_threshold=0.0,