diff --git a/app/agent/tools.py b/app/agent/tools.py
index 9717618..e65b31a 100644
--- a/app/agent/tools.py
+++ b/app/agent/tools.py
@@ -280,7 +280,7 @@ def search_datasets(query: str) -> str:
 
     Strategy: Start with broad terms like "censo", "ibge", "inep", "rais", then get specific if needed.
     Next step: Use `get_dataset_details()` with returned dataset IDs.
-    """  # noqa: E501
+    """
     response = _http_client.get(
         url=SEARCH_URL,
         params={"contains": "tables", "q": query, "page_size": PAGE_SIZE},
@@ -333,7 +333,7 @@ def get_dataset_details(dataset_id: str) -> str:
             - usage_guide: Provide key information and best practices for using the dataset.
 
     Next step: Use `execute_bigquery_sql()` to execute queries.
-    """  # noqa: E501
+    """
     response = _http_client.post(
         url=GRAPHQL_URL,
         json={
@@ -485,7 +485,7 @@ def execute_bigquery_sql(sql_query: str, config: RunnableConfig) -> str:
 
     Returns:
         str: Query results as JSON array. Empty results return "[]".
-    """  # noqa: E501
+    """
     client = get_bigquery_client()
 
     job_config = bq.QueryJobConfig(dry_run=True, use_query_cache=False)
@@ -544,14 +544,16 @@ def decode_table_values(
     Returns:
         str: JSON array with chave (code) and valor (meaning) mappings.
     """
-    # noqa: E501
+    if "`" in table_gcp_id:
+        table_gcp_id = table_gcp_id.replace("`", "")
+
     try:
         project_name, dataset_name, table_name = table_gcp_id.split(".")
     except ValueError:
         raise ToolError(
             message=f"Invalid table reference: '{table_gcp_id}'",
             error_type="INVALID_TABLE_REFERENCE",
-            instructions="Provide a valid table reference in the format `project.dataset.table`",
+            instructions="Provide a valid table reference in the format project.dataset.table",
         )
 
     client = get_bigquery_client()
diff --git a/tests/app/agent/test_tools.py b/tests/app/agent/test_tools.py
index fc669a1..f441018 100644
--- a/tests/app/agent/test_tools.py
+++ b/tests/app/agent/test_tools.py
@@ -634,14 +634,14 @@ def test_decode_all_columns(self, mocker: MockerFixture, mock_config: dict):
         assert len(output.results) == 2
         assert output.error_details is None
 
-        # Verify parameterized table filter was added to query
         call_args = mock_bigquery_client.query.call_args[0][0]
         assert "id_tabela = @table_name" in call_args
+        assert "nome_coluna = @column_name" not in call_args
 
-        # Verify query parameters include table_name
         job_config = mock_bigquery_client.query.call_args[1]["job_config"]
         param_names = {p.name for p in job_config.query_parameters}
         assert "table_name" in param_names
+        assert "nome_coluna = " not in param_names
 
     def test_decode_specific_column(self, mocker: MockerFixture, mock_config: dict):
         """Test decoding a specific column."""
@@ -670,13 +670,13 @@ def test_decode_specific_column(self, mocker: MockerFixture, mock_config: dict):
 
         assert output.status == "success"
 
-        # Verify parameterized column filter was added to query
         call_args = mock_bigquery_client.query.call_args[0][0]
+        assert "id_tabela = @table_name" in call_args
         assert "nome_coluna = @column_name" in call_args
 
-        # Verify query parameters include column_name
         job_config = mock_bigquery_client.query.call_args[1]["job_config"]
         param_names = {p.name for p in job_config.query_parameters}
+        assert "table_name" in param_names
         assert "column_name" in param_names
 
     def test_dictionary_not_found(self, mocker: MockerFixture, mock_config: dict):
@@ -722,7 +722,7 @@ def test_invalid_table_reference(self, mock_config: dict):
         assert output.error_details.message == "Invalid table reference: 'table'"
         assert (
             output.error_details.instructions
-            == "Provide a valid table reference in the format `project.dataset.table`"
+            == "Provide a valid table reference in the format project.dataset.table"
         )