fix issue pointed out by mike (#1986)

* fix issue pointed out by mike

* clean up

* Drop logger

* drop unused imports

pyproject.toml

@@ -36,6 +36,7 @@ dependencies = [
     "tomli-w>=1.1.0",
     "tomli>=2.0.2",
     "blinker>=1.9.0",
+    "json5>=0.10.0",
 ]
 
 [project.urls]

src/crewai/tools/tool_usage.py

@@ -1,12 +1,13 @@
 import ast
 import datetime
 import json
-import re
 import time
 from difflib import SequenceMatcher
+from json import JSONDecodeError
 from textwrap import dedent
-from typing import Any, Dict, List, Union
+from typing import Any, Dict, List, Optional, Union
 
+import json5
 from json_repair import repair_json
 
 import crewai.utilities.events as events
@@ -407,28 +408,55 @@ class ToolUsage:
                 )
             return self._tool_calling(tool_string)
 
-    def _validate_tool_input(self, tool_input: str) -> Dict[str, Any]:
+    def _validate_tool_input(self, tool_input: Optional[str]) -> Dict[str, Any]:
+        if tool_input is None:
+            return {}
+
+        if not isinstance(tool_input, str) or not tool_input.strip():
+            raise Exception(
+                "Tool input must be a valid dictionary in JSON or Python literal format"
+            )
+
+        # Attempt 1: Parse as JSON
         try:
-            # Replace Python literals with JSON equivalents
-            replacements = {
-                r"'": '"',
-                r"None": "null",
-                r"True": "true",
-                r"False": "false",
-            }
-            for pattern, replacement in replacements.items():
-                tool_input = re.sub(pattern, replacement, tool_input)
-
             arguments = json.loads(tool_input)
-        except json.JSONDecodeError:
+            if isinstance(arguments, dict):
-            # Attempt to repair JSON string
+                return arguments
-            repaired_input = repair_json(tool_input)
+        except (JSONDecodeError, TypeError):
-            try:
+            pass  # Continue to the next parsing attempt
-                arguments = json.loads(repaired_input)
-            except json.JSONDecodeError as e:
-                raise Exception(f"Invalid tool input JSON: {e}")
 
-        return arguments
+        # Attempt 2: Parse as Python literal
+        try:
+            arguments = ast.literal_eval(tool_input)
+            if isinstance(arguments, dict):
+                return arguments
+        except (ValueError, SyntaxError):
+            pass  # Continue to the next parsing attempt
+
+        # Attempt 3: Parse as JSON5
+        try:
+            arguments = json5.loads(tool_input)
+            if isinstance(arguments, dict):
+                return arguments
+        except (JSONDecodeError, ValueError, TypeError):
+            pass  # Continue to the next parsing attempt
+
+        # Attempt 4: Repair JSON
+        try:
+            repaired_input = repair_json(tool_input)
+            self._printer.print(
+                content=f"Repaired JSON: {repaired_input}", color="blue"
+            )
+            arguments = json.loads(repaired_input)
+            if isinstance(arguments, dict):
+                return arguments
+        except Exception as e:
+            self._printer.print(content=f"Failed to repair JSON: {e}", color="red")
+
+        # If all parsing attempts fail, raise an error
+        raise Exception(
+            "Tool input must be a valid dictionary in JSON or Python literal format"
+        )
 
     def on_tool_error(self, tool: Any, tool_calling: ToolCalling, e: Exception) -> None:
         event_data = self._prepare_event_data(tool, tool_calling)

tests/tools/test_tool_usage.py

@@ -231,3 +231,255 @@ def test_validate_tool_input_with_special_characters():
 
     arguments = tool_usage._validate_tool_input(tool_input)
     assert arguments == expected_arguments
+
+
+def test_validate_tool_input_none_input():
+    tool_usage = ToolUsage(
+        tools_handler=MagicMock(),
+        tools=[],
+        original_tools=[],
+        tools_description="",
+        tools_names="",
+        task=MagicMock(),
+        function_calling_llm=None,
+        agent=MagicMock(),
+        action=MagicMock(),
+    )
+
+    arguments = tool_usage._validate_tool_input(None)
+    assert arguments == {}
+
+
+def test_validate_tool_input_valid_json():
+    tool_usage = ToolUsage(
+        tools_handler=MagicMock(),
+        tools=[],
+        original_tools=[],
+        tools_description="",
+        tools_names="",
+        task=MagicMock(),
+        function_calling_llm=None,
+        agent=MagicMock(),
+        action=MagicMock(),
+    )
+
+    tool_input = '{"key": "value", "number": 42, "flag": true}'
+    expected_arguments = {"key": "value", "number": 42, "flag": True}
+
+    arguments = tool_usage._validate_tool_input(tool_input)
+    assert arguments == expected_arguments
+
+
+def test_validate_tool_input_python_dict():
+    tool_usage = ToolUsage(
+        tools_handler=MagicMock(),
+        tools=[],
+        original_tools=[],
+        tools_description="",
+        tools_names="",
+        task=MagicMock(),
+        function_calling_llm=None,
+        agent=MagicMock(),
+        action=MagicMock(),
+    )
+
+    tool_input = "{'key': 'value', 'number': 42, 'flag': True}"
+    expected_arguments = {"key": "value", "number": 42, "flag": True}
+
+    arguments = tool_usage._validate_tool_input(tool_input)
+    assert arguments == expected_arguments
+
+
+def test_validate_tool_input_json5_unquoted_keys():
+    tool_usage = ToolUsage(
+        tools_handler=MagicMock(),
+        tools=[],
+        original_tools=[],
+        tools_description="",
+        tools_names="",
+        task=MagicMock(),
+        function_calling_llm=None,
+        agent=MagicMock(),
+        action=MagicMock(),
+    )
+
+    tool_input = "{key: 'value', number: 42, flag: true}"
+    expected_arguments = {"key": "value", "number": 42, "flag": True}
+
+    arguments = tool_usage._validate_tool_input(tool_input)
+    assert arguments == expected_arguments
+
+
+def test_validate_tool_input_with_trailing_commas():
+    tool_usage = ToolUsage(
+        tools_handler=MagicMock(),
+        tools=[],
+        original_tools=[],
+        tools_description="",
+        tools_names="",
+        task=MagicMock(),
+        function_calling_llm=None,
+        agent=MagicMock(),
+        action=MagicMock(),
+    )
+
+    tool_input = '{"key": "value", "number": 42, "flag": true,}'
+    expected_arguments = {"key": "value", "number": 42, "flag": True}
+
+    arguments = tool_usage._validate_tool_input(tool_input)
+    assert arguments == expected_arguments
+
+
+def test_validate_tool_input_invalid_input():
+    tool_usage = ToolUsage(
+        tools_handler=MagicMock(),
+        tools=[],
+        original_tools=[],
+        tools_description="",
+        tools_names="",
+        task=MagicMock(),
+        function_calling_llm=None,
+        agent=MagicMock(),
+        action=MagicMock(),
+    )
+
+    invalid_inputs = [
+        "Just a string",
+        "['list', 'of', 'values']",
+        "12345",
+        "",
+    ]
+
+    for invalid_input in invalid_inputs:
+        with pytest.raises(Exception) as e_info:
+            tool_usage._validate_tool_input(invalid_input)
+        assert (
+            "Tool input must be a valid dictionary in JSON or Python literal format"
+            in str(e_info.value)
+        )
+
+    # Test for None input separately
+    arguments = tool_usage._validate_tool_input(None)
+    assert arguments == {}  # Expecting an empty dictionary
+
+
+def test_validate_tool_input_complex_structure():
+    tool_usage = ToolUsage(
+        tools_handler=MagicMock(),
+        tools=[],
+        original_tools=[],
+        tools_description="",
+        tools_names="",
+        task=MagicMock(),
+        function_calling_llm=None,
+        agent=MagicMock(),
+        action=MagicMock(),
+    )
+
+    tool_input = """
+    {
+        "user": {
+            "name": "Alice",
+            "age": 30
+        },
+        "items": [
+            {"id": 1, "value": "Item1"},
+            {"id": 2, "value": "Item2",}
+        ],
+        "active": true,
+    }
+    """
+    expected_arguments = {
+        "user": {"name": "Alice", "age": 30},
+        "items": [
+            {"id": 1, "value": "Item1"},
+            {"id": 2, "value": "Item2"},
+        ],
+        "active": True,
+    }
+
+    arguments = tool_usage._validate_tool_input(tool_input)
+    assert arguments == expected_arguments
+
+
+def test_validate_tool_input_code_content():
+    tool_usage = ToolUsage(
+        tools_handler=MagicMock(),
+        tools=[],
+        original_tools=[],
+        tools_description="",
+        tools_names="",
+        task=MagicMock(),
+        function_calling_llm=None,
+        agent=MagicMock(),
+        action=MagicMock(),
+    )
+
+    tool_input = '{"filename": "script.py", "content": "def hello():\\n    print(\'Hello, world!\')"}'
+    expected_arguments = {
+        "filename": "script.py",
+        "content": "def hello():\n    print('Hello, world!')",
+    }
+
+    arguments = tool_usage._validate_tool_input(tool_input)
+    assert arguments == expected_arguments
+
+
+def test_validate_tool_input_with_escaped_quotes():
+    tool_usage = ToolUsage(
+        tools_handler=MagicMock(),
+        tools=[],
+        original_tools=[],
+        tools_description="",
+        tools_names="",
+        task=MagicMock(),
+        function_calling_llm=None,
+        agent=MagicMock(),
+        action=MagicMock(),
+    )
+
+    tool_input = '{"text": "He said, \\"Hello, world!\\""}'
+    expected_arguments = {"text": 'He said, "Hello, world!"'}
+
+    arguments = tool_usage._validate_tool_input(tool_input)
+    assert arguments == expected_arguments
+
+
+def test_validate_tool_input_large_json_content():
+    tool_usage = ToolUsage(
+        tools_handler=MagicMock(),
+        tools=[],
+        original_tools=[],
+        tools_description="",
+        tools_names="",
+        task=MagicMock(),
+        function_calling_llm=None,
+        agent=MagicMock(),
+        action=MagicMock(),
+    )
+
+    # Simulate a large JSON content
+    tool_input = (
+        '{"data": ' + json.dumps([{"id": i, "value": i * 2} for i in range(1000)]) + "}"
+    )
+    expected_arguments = {"data": [{"id": i, "value": i * 2} for i in range(1000)]}
+
+    arguments = tool_usage._validate_tool_input(tool_input)
+    assert arguments == expected_arguments
+
+
+def test_validate_tool_input_none_input():
+    tool_usage = ToolUsage(
+        tools_handler=MagicMock(),
+        tools=[],
+        original_tools=[],
+        tools_description="",
+        tools_names="",
+        task=MagicMock(),
+        function_calling_llm=None,
+        agent=MagicMock(),
+        action=MagicMock(),
+    )
+
+    arguments = tool_usage._validate_tool_input(None)
+    assert arguments == {}  # Expecting an empty dictionary

uv.lock

@@ -659,6 +659,7 @@ dependencies = [
     { name = "click" },
     { name = "instructor" },
     { name = "json-repair" },
+    { name = "json5" },
     { name = "jsonref" },
     { name = "litellm" },
     { name = "openai" },
@@ -737,6 +738,7 @@ requires-dist = [
     { name = "fastembed", marker = "extra == 'fastembed'", specifier = ">=0.4.1" },
     { name = "instructor", specifier = ">=1.3.3" },
     { name = "json-repair", specifier = ">=0.25.2" },
+    { name = "json5", specifier = ">=0.10.0" },
     { name = "jsonref", specifier = ">=1.1.0" },
     { name = "litellm", specifier = "==1.57.4" },
     { name = "mem0ai", marker = "extra == 'mem0'", specifier = ">=0.1.29" },
@@ -2077,6 +2079,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/23/38/34cb843cee4c5c27aa5c822e90e99bf96feb3dfa705713b5b6e601d17f5c/json_repair-0.30.0-py3-none-any.whl", hash = "sha256:bda4a5552dc12085c6363ff5acfcdb0c9cafc629989a2112081b7e205828228d", size = 17641 },
 ]
 
+[[package]]
+name = "json5"
+version = "0.10.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/85/3d/bbe62f3d0c05a689c711cff57b2e3ac3d3e526380adb7c781989f075115c/json5-0.10.0.tar.gz", hash = "sha256:e66941c8f0a02026943c52c2eb34ebeb2a6f819a0be05920a6f5243cd30fd559", size = 48202 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/aa/42/797895b952b682c3dafe23b1834507ee7f02f4d6299b65aaa61425763278/json5-0.10.0-py3-none-any.whl", hash = "sha256:19b23410220a7271e8377f81ba8aacba2fdd56947fbb137ee5977cbe1f5e8dfa", size = 34049 },
+]
+
 [[package]]
 name = "jsonlines"
 version = "3.1.0"