diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index fe01f1fdbca..04b9d0dfc86 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -38,6 +38,7 @@ This release additionally includes fixes for tests in hive, as well as new test
 - ✨ Added `--watch` flag that monitors test files for changes and automatically re-runs the fill command when developing tests ([#2173](https://github.com/ethereum/execution-spec-tests/pull/2173)).
 - 🔀 Upgraded ckzg version to 2.1.3 or newer for correct handling of points at infinity ([#2171](https://github.com/ethereum/execution-spec-tests/pull/2171)).
 - 🔀 Move pytest marker registration for `fill` and `execute-*` from their respective ini files to the shared `pytest_plugins.shared.execute_fill` pytest plugin ([#2110](https://github.com/ethereum/execution-spec-tests/pull/2110)).
+- ✨ Added an `--input.config` CLI argument to the transition tool (`t8n`) invocation ([#2264](https://github.com/ethereum/execution-spec-tests/pull/2264)).
 
 #### `consume`
 
diff --git a/src/ethereum_clis/cli_types.py b/src/ethereum_clis/cli_types.py
index c1b1ba8385b..f5292311d0c 100644
--- a/src/ethereum_clis/cli_types.py
+++ b/src/ethereum_clis/cli_types.py
@@ -15,6 +15,7 @@
     Hash,
     HexNumber,
 )
+from ethereum_test_base_types.composite_types import ForkBlobSchedule
 from ethereum_test_exceptions import (
     BlockException,
     ExceptionMapperValidator,
@@ -261,6 +262,15 @@ class TransitionToolInput(CamelModel):
     env: Environment
 
 
+class TransitionToolCLIInput(CamelModel):
+    """Transition tool CLI input."""
+
+    alloc: Alloc
+    txs: List[Transaction]
+    env: Environment
+    blob_params: ForkBlobSchedule | None = None
+
+
 class TransitionToolOutput(CamelModel):
     """Transition tool output."""
 
diff --git a/src/ethereum_clis/clis/evmone.py b/src/ethereum_clis/clis/evmone.py
index 18baecaa176..b2cc47402a1 100644
--- a/src/ethereum_clis/clis/evmone.py
+++ b/src/ethereum_clis/clis/evmone.py
@@ -40,6 +40,7 @@ class EvmOneTransitionTool(TransitionTool):
     cached_version: Optional[str] = None
     trace: bool
     supports_opcode_count: ClassVar[bool] = True
+    supports_blob_params: ClassVar[bool] = True
 
     def __init__(
         self,
diff --git a/src/ethereum_clis/transition_tool.py b/src/ethereum_clis/transition_tool.py
index 4137c4c8afc..273739396a9 100644
--- a/src/ethereum_clis/transition_tool.py
+++ b/src/ethereum_clis/transition_tool.py
@@ -19,6 +19,7 @@
 from requests_unixsocket import Session
 
 from ethereum_test_base_types import BlobSchedule
+from ethereum_test_base_types.composite_types import ForkBlobSchedule
 from ethereum_test_exceptions import ExceptionMapper
 from ethereum_test_forks import Fork
 from ethereum_test_forks.helpers import get_development_forks, get_forks
@@ -29,6 +30,7 @@
     Traces,
     TransactionReceipt,
     TransactionTraces,
+    TransitionToolCLIInput,
     TransitionToolContext,
     TransitionToolInput,
     TransitionToolOutput,
@@ -75,6 +77,7 @@ class TransitionTool(EthereumCLI):
     supports_opcode_count: ClassVar[bool] = False
 
     supports_xdist: ClassVar[bool] = True
+    supports_blob_params: ClassVar[bool] = False
 
     @abstractmethod
     def __init__(
@@ -175,6 +178,16 @@ def fork_name(self) -> str:
                 timestamp=self.env.timestamp,
             )
 
+        @property
+        def blob_params(self) -> ForkBlobSchedule | None:
+            """Return the blob parameters for the current fork."""
+            if self.blob_schedule:
+                fork_name = self.fork.fork_at(
+                    block_number=self.env.number, timestamp=self.env.timestamp
+                ).name()
+                return self.blob_schedule[fork_name]
+            return None
+
         def __post_init__(self) -> None:
             """Modify the reward if the environment number is 0."""
             if self.env.number == 0:
@@ -188,6 +201,15 @@ def to_input(self) -> TransitionToolInput:
                 env=self.env,
             )
 
+        def to_cli_input(self) -> TransitionToolCLIInput:
+            """Convert the data to a TransitionToolCLIInput object."""
+            return TransitionToolCLIInput(
+                alloc=self.alloc,
+                txs=self.txs,
+                env=self.env,
+                blob_params=self.blob_params,
+            )
+
         def get_request_data(self) -> TransitionToolRequest:
             """Convert the data to a TransitionToolRequest object."""
             return TransitionToolRequest(
@@ -214,7 +236,7 @@ def _evaluate_filesystem(
         os.mkdir(os.path.join(temp_dir.name, "input"))
         os.mkdir(os.path.join(temp_dir.name, "output"))
 
-        input_contents = t8n_data.to_input().model_dump(mode="json", **model_dump_config)
+        input_contents = t8n_data.to_cli_input().model_dump(mode="json", **model_dump_config)
 
         input_paths = {
             k: os.path.join(temp_dir.name, "input", f"{k}.json") for k in input_contents.keys()
@@ -258,6 +280,13 @@ def _evaluate_filesystem(
                     "opcodes.json",
                 ]
             )
+        if self.supports_blob_params and input_paths.get("blobParams"):
+            args.extend(
+                [
+                    "--input.blobParams",
+                    input_paths["blobParams"],
+                ]
+            )
 
         if self.trace:
             args.append("--trace")
diff --git a/src/ethereum_test_forks/base_fork.py b/src/ethereum_test_forks/base_fork.py
index a08fc617cd8..ece6b3350f1 100644
--- a/src/ethereum_test_forks/base_fork.py
+++ b/src/ethereum_test_forks/base_fork.py
@@ -827,6 +827,17 @@ def parent(cls) -> Type["BaseFork"] | None:
             return None
         return base_class
 
+    @classmethod
+    def non_bpo_ancestor(cls) -> Type["BaseFork"]:
+        """Return the nearest non-BPO ancestor fork."""
+        ancestor = cls
+        while ancestor.bpo_fork():
+            parent = ancestor.parent()
+            if parent is None:
+                break
+            ancestor = parent
+        return ancestor
+
     @classmethod
     def children(cls) -> Set[Type["BaseFork"]]:
         """Return the children forks."""
diff --git a/src/ethereum_test_forks/forks/forks.py b/src/ethereum_test_forks/forks/forks.py
index 8831d4ea03e..8ac257555d2 100644
--- a/src/ethereum_test_forks/forks/forks.py
+++ b/src/ethereum_test_forks/forks/forks.py
@@ -1870,6 +1870,18 @@ def blob_base_cost(cls, *, block_number: int = 0, timestamp: int = 0) -> int:
 class BPO1(Osaka, bpo_fork=True):
     """Mainnet BPO1 fork - Blob Parameter Only fork 1."""
 
+    @classmethod
+    def transition_tool_name(cls, *, block_number: int = 0, timestamp: int = 0) -> str:
+        """
+        Return fork name as it's meant to be passed to the transition tool for
+        execution.
+        """
+        return (
+            cls.fork_at(block_number=block_number, timestamp=timestamp)
+            .non_bpo_ancestor()
+            .transition_tool_name()
+        )
+
     @classmethod
     def blob_base_fee_update_fraction(cls, *, block_number: int = 0, timestamp: int = 0) -> int:
         """Return the blob base fee update fraction for BPO1."""