diff --git a/.github/workflows/bench.yml b/.github/workflows/bench.yml
index 25caf834..1e675da9 100644
--- a/.github/workflows/bench.yml
+++ b/.github/workflows/bench.yml
@@ -58,4 +58,4 @@ jobs:
           files: ./coverage.xml
           flags: bench
           name: codecov-umbrella
-          fail_ci_if_error: true
+          fail_ci_if_error: false
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 11e9b2c0..d89050d1 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -34,7 +34,7 @@ repos:
       - id: isort
         args: ["--profile", "black"]
   - repo: https://github.com/asottile/pyupgrade
-    rev: v3.15.2
+    rev: v3.16.0
     hooks:
       - id: pyupgrade
   - repo: https://github.com/pycqa/pydocstyle
diff --git a/docs/source/overview/prerequisites.rst b/docs/source/overview/prerequisites.rst
index 1718f41b..05802e1c 100644
--- a/docs/source/overview/prerequisites.rst
+++ b/docs/source/overview/prerequisites.rst
@@ -18,28 +18,45 @@ This is a standard example:
   [paths]
   # inputs
   grids = "data/grids"
-  theory_cards = "data/theory_cards"
   operator_card_template_name = "_template.yaml"
   # outputs
   operator_cards = "data/operator_cards"
   ekos = "data/ekos"
   fktables = "data/fktables"
 
+  # The following two keys are only necessary when nnpdf=false
+  #theory_cards = "data/theory_cards"
+  #ymldb = "data/yamldb"
+
   [paths.logs]
   eko = "logs/eko"
   fk = "logs/fk"
 
 
-All the relevant inputs are described below. The command ``pineko scaffold new`` will generate all necessary folders.
+All the relevant inputs are described below. The command ``pineko scaffold new`` generates all necessary folders.
+
+
+Theory runcards and dataset definition
+--------------------------------------
+
+You need to provide the necessary theory runcards and the mapping between datasets and FK tables
+(as one dataset may consist several FK tables).
+For more details about theory runcards you can look at https://docs.nnpdf.science/theory/theoryparamsdefinitions.html
+
+Both configuration can be either provided by the NNPDF framework or in a manual setup.
 
 nnpdf
------
-The key ``nnpdf`` tells ``pineko`` it should use the data files from NNPDF to map datasets to FK Tables.
+"""""
+The key ``nnpdf`` tells ``pineko`` it should use the data files from NNPDF to map datasets to FK Tables
+and to define the theory parameters.
 If this key is given, a valid installation of ``nnpdf`` needs to be available as well.
-i.e, ``pineko`` should be installed with the ``nnpdf`` extra (``pip install pineko[nnpdf]``).
+i.e., ``pineko`` should be installed with the ``nnpdf`` extra (``pip install pineko[nnpdf]``).
+
+Manual configuration
+""""""""""""""""""""
 
-Alternatively, it is possible not to set this key (or set it to false) and instead
-provide a path with ``yaml`` files containing such dataset-FK mapping.
+Alternatively, it is possible to provide a path *paths.theory_cards* with ``yaml`` files containing the
+theory cards, and a path *paths.ymldb* with ``yaml`` files containing the dataset-FK mapping.
 If a custom database of mappings is to be used, the path to the folder containing
 this files needs to be explicitly provided:
 
@@ -47,28 +64,16 @@ this files needs to be explicitly provided:
 
   [paths]
   ymldb = "data/yamldb"
+  theory_cards = "data/theory_cards"
 
-These `yaml` files (which should be named `<dataset>.yaml`)
-define a mapping from datasets to FK tables.
-An actual (rather simple) example is the following:
+The mapping from datasets to FK tables is provided by `yaml` files (which should be named `<dataset>.yaml`)
+and a simple example is the following:
 
 ::
 
-  conversion_factor: 1.0
   operands:
   - - HERA_NC_318GEV_EP_SIGMARED
-  operation: 'null'
-  target_dataset: HERACOMBNCEP920
-
-In ``operands`` all the necessary FK tables for the ``target_dataset`` are listed. In this case ``operation`` is
-``NULL`` which means that the FK tables will just be concatenated but other kinds of operations
-can be used (for instance ``ratio``).
 
-Theory Runcards
----------------
-
-You need to provide the necessary theory runcards named with their respective theory ID inside the *paths.theory_cards* folder [1]_.
-For more details about theory runcards you can look at https://eko.readthedocs.io/en/latest/code/IO.html under **Theory Runcards**.
 
 Default Operator Card
 ---------------------
@@ -121,7 +126,7 @@ generated by *pineko* itself starting from this default template.
 Grids
 -----
 
-*pineko* does **NOT** compute grids, which are instead expected input to *pineko*.
+*pineko* does **NOT** compute grids, which are instead expected as input to *pineko*.
 There are typically two ways to obtain grids:
 
 1. computing them from scratch with
@@ -132,10 +137,4 @@ There are typically two ways to obtain grids:
     pineko theory inherit-grids SOURCE_THEORY_ID TARGET_THEORY_ID DATASET1 DATASET2 ...
 
   The relation between the source theory and the target theory is non-trivial
-  (e.g. they may differ by scale variations, different DIS settings, etc)
-
-
-Notes
------
-
-.. [1] this is to be replaced by a binding to the NNPDF theory objects
+  (e.g. they may differ by scale variations, different DIS settings, etc.)
diff --git a/docs/source/overview/running.rst b/docs/source/overview/running.rst
index 0251d0e8..8553cc1e 100644
--- a/docs/source/overview/running.rst
+++ b/docs/source/overview/running.rst
@@ -95,3 +95,37 @@ With the command ``pineko compare`` it is possible to compare the predictions as
 
 again eventually specifying the values of *renormalization* and *factorization* scales with the
 appropriate options.
+
+Using pineko with NNPDF
+"""""""""""""""""""""""
+
+It is possible to use ``pineko`` without providing an explicit mapping between data and grids
+(i.e., without a ``yamldb`` database) or theory cards, by using the data declared in the NNPDF
+repository (which includes a data-theory mapping).
+
+In order to do this you need to install ``pineko`` with the ``nnpdf`` extra, which installs
+the latest version from the ``nnpdf`` repository::
+
+  pip install pineko[nnpdf]
+
+In order to enable ``pineko`` to read the data from ``nnpdf`` it is necessary to set up
+the ``general::nnpdf`` key in the configuration file.
+Note that if you do that, both ``theory_cards`` and ``ymldb`` keys become unnecessary,
+like in the example below.
+
+
+.. code-block:: yaml
+
+  [general]
+  nnpdf = true
+
+  [paths]
+  grids = "data/grids"
+  operator_card_template_name = "../_template.yaml"
+  operator_cards = "data/operator_cards"
+  ekos = "data/ekos"
+  fktables = "data/fktables"
+
+  [paths.logs]
+  eko = "logs/eko"
+  fk = "logs/fk"
diff --git a/poetry.lock b/poetry.lock
index a95de5d4..a1cb6777 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.5.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.8.2 and should not be changed by hand.
 
 [[package]]
 name = "absl-py"
@@ -376,63 +376,63 @@ test-no-images = ["pytest", "pytest-cov", "pytest-xdist", "wurlitzer"]
 
 [[package]]
 name = "coverage"
-version = "7.5.3"
+version = "7.5.0"
 description = "Code coverage measurement for Python"
 optional = false
 python-versions = ">=3.8"
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 [package.dependencies]
@@ -458,19 +458,19 @@ tests = ["pytest", "pytest-cov", "pytest-xdist"]
 
 [[package]]
 name = "dask"
-version = "2024.5.2"
+version = "2024.4.2"
 description = "Parallel PyData with Task Scheduling"
 optional = true
 python-versions = ">=3.9"
 files = [
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 [package.dependencies]
 click = ">=8.1"
 cloudpickle = ">=1.5.0"
-distributed = {version = "2024.5.2", optional = true, markers = "extra == \"distributed\""}
+distributed = {version = "2024.4.2", optional = true, markers = "extra == \"distributed\""}
 fsspec = ">=2021.09.0"
 importlib-metadata = {version = ">=4.13.0", markers = "python_version < \"3.12\""}
 packaging = ">=20.0"
@@ -483,7 +483,7 @@ array = ["numpy (>=1.21)"]
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 diagnostics = ["bokeh (>=2.4.2)", "jinja2 (>=2.10.3)"]
-distributed = ["distributed (==2024.5.2)"]
+distributed = ["distributed (==2024.4.2)"]
 test = ["pandas[test]", "pre-commit", "pytest", "pytest-cov", "pytest-rerunfailures", "pytest-timeout", "pytest-xdist"]
 
 [[package]]
@@ -514,19 +514,19 @@ profile = ["gprof2dot (>=2022.7.29)"]
 
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 name = "distributed"
-version = "2024.5.2"
+version = "2024.4.2"
 description = "Distributed scheduler for Dask"
 optional = true
 python-versions = ">=3.9"
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 cloudpickle = ">=1.5.0"
-dask = "2024.5.2"
+dask = "2024.4.2"
 jinja2 = ">=2.10.3"
 locket = ">=1.0.0"
 msgpack = ">=1.0.0"
@@ -840,61 +840,61 @@ test = ["objgraph", "psutil"]
 
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-[package.extras]
-protobuf = ["grpcio-tools (>=1.64.0)"]
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+    {file = "grpcio-1.63.0.tar.gz", hash = "sha256:f3023e14805c61bc439fb40ca545ac3d5740ce66120a678a3c6c2c55b70343d1"},
+]
+
+[package.extras]
+protobuf = ["grpcio-tools (>=1.63.0)"]
 
 [[package]]
 name = "h5py"
@@ -1283,7 +1283,6 @@ description = "Clang Python Bindings, mirrored from the official LLVM repo: http
 optional = true
 python-versions = "*"
 files = [
-    {file = "libclang-18.1.1-py2.py3-none-macosx_10_9_x86_64.whl", hash = "sha256:6f14c3f194704e5d09769108f03185fce7acaf1d1ae4bbb2f30a72c2400cb7c5"},
     {file = "libclang-18.1.1-py2.py3-none-macosx_11_0_arm64.whl", hash = "sha256:83ce5045d101b669ac38e6da8e58765f12da2d3aafb3b9b98d88b286a60964d8"},
     {file = "libclang-18.1.1-py2.py3-none-manylinux2010_x86_64.whl", hash = "sha256:c533091d8a3bbf7460a00cb6c1a71da93bffe148f172c7d03b1c31fbf8aa2a0b"},
     {file = "libclang-18.1.1-py2.py3-none-manylinux2014_aarch64.whl", hash = "sha256:54dda940a4a0491a9d1532bf071ea3ef26e6dbaf03b5000ed94dd7174e8f9592"},
@@ -1730,7 +1729,7 @@ tests = ["hypothesis", "pytest", "pytest-mpl"]
 type = "git"
 url = "https://github.com/NNPDF/nnpdf"
 reference = "HEAD"
-resolved_reference = "37f48752cc362291c06df2f3990f815276bf12ee"
+resolved_reference = "400e5c1d543ea30dd8d497729a31bca0ab479bb8"
 
 [[package]]
 name = "numba"
@@ -2250,13 +2249,13 @@ subdirectory = "pineappl_py"
 
 [[package]]
 name = "platformdirs"
-version = "4.2.2"
+version = "4.2.1"
 description = "A small Python package for determining appropriate platform-specific dirs, e.g. a `user data dir`."
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "platformdirs-4.2.2-py3-none-any.whl", hash = "sha256:2d7a1657e36a80ea911db832a8a6ece5ee53d8de21edd5cc5879af6530b1bfee"},
-    {file = "platformdirs-4.2.2.tar.gz", hash = "sha256:38b7b51f512eed9e84a22788b4bce1de17c0adb134d6becb09836e37d8654cd3"},
+    {file = "platformdirs-4.2.1-py3-none-any.whl", hash = "sha256:17d5a1161b3fd67b390023cb2d3b026bbd40abde6fdb052dfbd3a29c3ba22ee1"},
+    {file = "platformdirs-4.2.1.tar.gz", hash = "sha256:031cd18d4ec63ec53e82dceaac0417d218a6863f7745dfcc9efe7793b7039bdf"},
 ]
 
 [package.extras]
@@ -2720,6 +2719,7 @@ files = [
     {file = "PyYAML-6.0.1-cp311-cp311-win_amd64.whl", hash = "sha256:bf07ee2fef7014951eeb99f56f39c9bb4af143d8aa3c21b1677805985307da34"},
     {file = "PyYAML-6.0.1-cp312-cp312-macosx_10_9_x86_64.whl", hash = "sha256:855fb52b0dc35af121542a76b9a84f8d1cd886ea97c84703eaa6d88e37a2ad28"},
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+    {file = "PyYAML-6.0.1-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:a08c6f0fe150303c1c6b71ebcd7213c2858041a7e01975da3a99aed1e7a378ef"},
     {file = "PyYAML-6.0.1-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:6c22bec3fbe2524cde73d7ada88f6566758a8f7227bfbf93a408a9d86bcc12a0"},
     {file = "PyYAML-6.0.1-cp312-cp312-musllinux_1_1_x86_64.whl", hash = "sha256:8d4e9c88387b0f5c7d5f281e55304de64cf7f9c0021a3525bd3b1c542da3b0e4"},
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diff --git a/src/pineko/configs.py b/src/pineko/configs.py
index 90eec3a4..d92572b0 100644
--- a/src/pineko/configs.py
+++ b/src/pineko/configs.py
@@ -12,11 +12,12 @@
 configs = {}
 "Holds loaded configurations"
 
+THEORY_PATH_KEY = "theory_cards"
 NEEDED_KEYS = [
     "operator_cards",
     "grids",
     "operator_card_template_name",
-    "theory_cards",
+    THEORY_PATH_KEY,
     "fktables",
     "ekos",
 ]
@@ -65,11 +66,17 @@ def enhance_paths(configs_):
     if generic_options.get("nnpdf", False):
         # Fail as soon as possible
         try:
-            import validphys
+            import nnpdf_data
         except ModuleNotFoundError:
             raise ModuleNotFoundError(
                 "Cannot use `nnpdf=True` without a valid installation of NNPDF"
             )
+        # If ``nnpdf_data`` is available, then override also the theory path
+        # UNLESS the debug-option ``nnpdf_theory`` is set explicitly to false!
+        if generic_options.get("nnpdf_theory", True):
+            from nnpdf_data import theory_cards
+
+            configs_["paths"][THEORY_PATH_KEY] = theory_cards
     else:
         required_keys.append("ymldb")
 
diff --git a/src/pineko/evolve.py b/src/pineko/evolve.py
index f5e96ac1..9eaa388d 100644
--- a/src/pineko/evolve.py
+++ b/src/pineko/evolve.py
@@ -153,8 +153,12 @@ def write_operator_card(pineappl_grid, default_card, card_path, tcard):
     xif = 1.0 if sv_method is not None else tcard["XIF"]
     # update scale variation method
     operators_card["configs"]["scvar_method"] = sv_method
-    # update initial scale mu0
+
+    # Make sure that we are using the theory Q0 and fail if the template has a different one
     operators_card["mu0"] = tcard["Q0"]
+    if default_card.get("mu0") is not None and default_card["mu0"] != tcard["Q0"]:
+        raise ValueError("Template declares a value of Q0 different from theory")
+
     q2_grid = (xif * xif * muf2_grid).tolist()
     masses = np.array([tcard["mc"], tcard["mb"], tcard["mt"]]) ** 2
     thresholds_ratios = np.array([tcard["kcThr"], tcard["kbThr"], tcard["ktThr"]]) ** 2
@@ -191,6 +195,39 @@ def write_operator_card(pineappl_grid, default_card, card_path, tcard):
     if "timelike" in kv:
         operators_card["configs"]["timelike"] = kv["timelike"] == "True"
 
+    # Choose the evolution method according to the theory if the key is included
+    if "ModEv" in tcard:
+        opconf = operators_card["configs"]
+        if tcard["ModEv"] == "TRN":
+            opconf["evolution_method"] = "truncated"
+            opconf["ev_op_iterations"] = 1
+        elif tcard["ModEv"] == "EXA":
+            opconf["evolution_method"] = "iterate-exact"
+            if "IterEv" in tcard:
+                opconf["ev_op_iterations"] = tcard["IterEv"]
+            elif "ev_op_iterations" not in default_card["configs"]:
+                raise ValueError(
+                    "EXA used but IterEv not found in the theory card and not ev_op_iterations set in the template"
+                )
+
+        # If the evolution method is defined in the template and it is different, fail
+        template_method = default_card["configs"].get("evolution_method")
+        if (
+            template_method is not None
+            and template_method != opconf["evolution_method"]
+        ):
+            raise ValueError(
+                f"The template and the theory have different evolution method ({template_method} vs {opconf['key']})"
+            )
+
+        # If the change is on the number of iterations, take the template value but warn the user
+        template_iter = default_card["configs"].get("ev_op_iterations")
+        if template_iter is not None and template_method != opconf["ev_op_iterations"]:
+            opconf["ev_op_iterations"] = template_iter
+            logger.warning(
+                f"The number of iteration in the theory and template is different, using template value ({template_iter})"
+            )
+
     # Some safety checks
     if (
         operators_card["configs"]["evolution_method"] == "truncated"
diff --git a/src/pineko/theory.py b/src/pineko/theory.py
index 2b049199..1ad844bd 100644
--- a/src/pineko/theory.py
+++ b/src/pineko/theory.py
@@ -337,8 +337,11 @@ def eko(self, name, grid, tcard):
             # from the PTO needed for the PDF evolution (and so by EKO). Here we
             # ensure that the PTO used in the EKO calculation reflects the real
             # perturbative order of the prescription.
-            if "PTOEKO" in tcard:
+            if tcard.get("PTOEKO") is not None:
                 tcard["PTO"] = tcard["PTOEKO"]
+            # Deprecated keys still needed by eko below. TODO: remove them asap.
+            tcard["Qedref"] = tcard["Qref"]
+            tcard["MaxNfAs"] = tcard["MaxNfPdf"]
             # The operator card has been already generated in the correct format
             # The theory card needs to be converted to a format that eko can use
             legacy_class = eko.io.runcards.Legacy(tcard, ocard)
@@ -393,7 +396,7 @@ def fk(self, name, grid_path, tcard, pdf):
         # PTODIS, thus using PTO instead of PTODIS to establish the perturbative
         # order would result in the PTODIS terms that correspond to orders
         # beyond PTO to be neglected
-        if "PTODIS" in tcard and "FONLL" in tcard["FNS"]:
+        if "FONLL" in tcard["FNS"] and tcard.get("PTODIS") is not None:
             tcard["PTO"] = tcard["PTODIS"]
 
         # check if grid contains SV if theory is requesting them (in particular
diff --git a/src/pineko/theory_card.py b/src/pineko/theory_card.py
index 931a29fc..88be852f 100644
--- a/src/pineko/theory_card.py
+++ b/src/pineko/theory_card.py
@@ -6,6 +6,7 @@
 import yaml
 
 from . import configs
+from .utils import load_nnpdf_theory
 
 
 def path(theory_id: int) -> pathlib.Path:
@@ -22,7 +23,7 @@ def path(theory_id: int) -> pathlib.Path:
         theory card path
 
     """
-    return configs.configs["paths"]["theory_cards"] / f"{theory_id}.yaml"
+    return configs.configs["paths"][configs.THEORY_PATH_KEY] / f"{theory_id}.yaml"
 
 
 def load(theory_id: int) -> Dict[str, Any]:
@@ -39,6 +40,10 @@ def load(theory_id: int) -> Dict[str, Any]:
         theory card
 
     """
+    nnpdf_theory = load_nnpdf_theory(theory_id, configs.configs)
+    if nnpdf_theory is not None:
+        return nnpdf_theory
+
     with open(path(theory_id), encoding="utf-8") as f:
         theory_card = yaml.safe_load(f)
     return theory_card
diff --git a/src/pineko/utils.py b/src/pineko/utils.py
index f40f2919..66076ee7 100644
--- a/src/pineko/utils.py
+++ b/src/pineko/utils.py
@@ -3,7 +3,14 @@
 Common tools typically used by several pineko functions.
 """
 
-from .configs import GENERIC_OPTIONS
+from .configs import GENERIC_OPTIONS, THEORY_PATH_KEY
+
+
+def _nnpdf_enabled(configs):
+    """Check whether NNPDF is enabled."""
+    if configs is None:
+        return True
+    return configs.get(GENERIC_OPTIONS, {}).get("nnpdf", False)
 
 
 def read_grids_from_nnpdf(dataset_name, configs=None):
@@ -18,9 +25,8 @@ def read_grids_from_nnpdf(dataset_name, configs=None):
             dictionary of configuration options
             if None it it assumed that the NNPDF version is required
     """
-    if configs is not None:
-        if not configs.get(GENERIC_OPTIONS, {}).get("nnpdf", False):
-            return None
+    if not _nnpdf_enabled(configs):
+        return None
 
     # Import NNPDF only if we really want it!
     from nnpdf_data import legacy_to_new_map
@@ -33,3 +39,23 @@ def read_grids_from_nnpdf(dataset_name, configs=None):
     fks = cd.metadata.theory.FK_tables
     # Return it flat
     return [f"{i}.{EXT}" for operand in fks for i in operand]
+
+
+def load_nnpdf_theory(theory_id, configs):
+    """Load a theory using the NNPDF data utilities.
+
+    If NNPDF is not available, returns None.
+
+    Parameters
+    ----------
+        theory_id: int
+        configs: dict
+            dictionary of configuration options
+    """
+    if not _nnpdf_enabled(configs):
+        return None
+
+    from nnpdf_data.theorydbutils import fetch_theory
+
+    theory_path = configs["paths"][THEORY_PATH_KEY]
+    return fetch_theory(theory_path, theory_id)
diff --git a/tests/test_evolve.py b/tests/test_evolve.py
index 425f82ac..f529b80b 100644
--- a/tests/test_evolve.py
+++ b/tests/test_evolve.py
@@ -50,22 +50,22 @@ def test_write_operator_card_q0(tmp_path):
     """Checks https://github.com/NNPDF/pineko/issues/146"""
     p = tmp_path / "q0.yaml"
     g = FakePine()
-    # 1. defaults
     t = copy.deepcopy(default_card)
     o = copy.deepcopy(example.raw_operator())
+    # 1. Same Q0 and mu0, all ok
+    t["Q0"] = 5.0
+    o["mu0"] = 5.0
     _xs, _mu2s = pineko.evolve.write_operator_card(g, o, p, t)
     with open(p, encoding="utf8") as f:
         oo = yaml.safe_load(f)
     np.testing.assert_allclose(oo["mu0"], t["Q0"])
-    # 2. overwriting from theory side
-    t["Q0"] = 10.0
+    # 2. Q0 only in theory, all ok
+    o.pop("mu0")
     _xs, _mu2s = pineko.evolve.write_operator_card(g, o, p, t)
     with open(p, encoding="utf8") as f:
         oo = yaml.safe_load(f)
     np.testing.assert_allclose(oo["mu0"], t["Q0"])
-    # 3. op template is ignored
+    # 3. op is different, raises error
     o["mu0"] = 11.0
-    _xs, _mu2s = pineko.evolve.write_operator_card(g, o, p, t)
-    with open(p, encoding="utf8") as f:
-        oo = yaml.safe_load(f)
-    np.testing.assert_allclose(oo["mu0"], t["Q0"])
+    with pytest.raises(ValueError):
+        _xs, _mu2s = pineko.evolve.write_operator_card(g, o, p, t)