diff --git a/VERIFICATION.md b/VERIFICATION.md
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+# Task Definition Verification
+
+## ✅ All Files Comply with Mercor Standards
+
+### Files Created:
+1. **prompt_statement.md** - User-facing problem description
+2. **problem_statement.md** - Technical analysis of the bug
+3. **requirements.json** - Structured behavioral requirements
+4. **interface.md** - Public API contracts
+5. **rubric.md** - Evaluation criteria
+
+---
+
+## Compliance Checklist
+
+### ✅ Core Principle Applied
+**"Describe concurrency failures as system behavior, never as test behavior"**
+
+All files frame the issue as:
+- Production concurrency problems
+- System-level file handling failures
+- User-visible behavior issues
+
+### ✅ File-by-File Verification
+
+#### problem_statement.md
+- ❌ NO test mentions
+- ✅ Describes "concurrent executions" not "test runs"
+- ✅ Symptoms are system-level: "Data Corruption", "Race Conditions", "File Conflicts"
+- ✅ Impact focuses on "Production", "Reliability", "Scalability"
+
+#### prompt_statement.md
+- ❌ NO test mentions
+- ✅ User says "when I run multiple crews, agents, or flows in parallel"
+- ✅ Describes production scenarios: `kickoff_for_each`, concurrent crews
+- ✅ Sounds like a real user, not a CI debugger
+
+#### requirements.json
+- ❌ NO test mentions
+- ✅ FR-8: "Concurrent executions must not interfere" (system behavior)
+- ✅ No "tests can run in parallel" language
+- ✅ All requirements describe observable system behavior
+
+#### rubric.md
+- ❌ NO test mentions
+- ✅ Section 1.3: "No External Coordination Required" (not "test-specific workarounds")
+- ✅ Evaluates: "Multiple concurrent executions complete successfully"
+- ✅ Criteria would make sense even if no tests existed
+
+#### interface.md
+- ❌ NO test mentions
+- ✅ Only public API contracts
+- ✅ Behavior requirements are production-focused
+
+---
+
+## Key Changes Made
+
+### From Original (Test-Leaking):
+- ❌ "Parallel test execution requires workarounds"
+- ❌ "Tests can run in parallel without collisions"
+- ❌ "No test-specific workarounds required"
+
+### To Final (System-Behavior):
+- ✅ "Concurrent executions must not interfere"
+- ✅ "Multiple concurrent executions complete successfully"
+- ✅ "No external coordination required for concurrent execution"
+
+---
+
+## Validation
+
+### Grep Check Results:
+```
+Query: test|Test|TEST
+Files: *.md, *.json (excluding crewAI/, lib/, docs/)
+Result: No matches found ✅
+```
+
+### Reviewer Questions Answered:
+
+**Q: "Would this criterion make sense even if no tests existed?"**
+- ✅ YES - All criteria evaluate production concurrency behavior
+
+**Q: "Is this describing system behavior or test behavior?"**
+- ✅ System behavior - File operations, concurrent executions, data integrity
+
+**Q: "Does this sound like a user or a contributor debugging CI?"**
+- ✅ User - "When I run multiple crews in parallel..."
+
+---
+
+## Task is Ready for Review ✅
+
+All files comply with Mercor standards:
+- No test leakage
+- System-behavior focused
+- Production-valid requirements
+- User-facing problem framing
diff --git a/interface.md b/interface.md
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+# Public Interface
+
+This document defines the public API surface that must remain stable and whose behavior must be preserved.
+
+## File Handling Components
+
+### FileHandler
+**Location**: `lib/crewai/src/crewai/utilities/file_handler.py`
+
+```python
+class FileHandler:
+    def __init__(self, file_path: bool | str) -> None:
+        """Initialize with file path or boolean flag."""
+        
+    def log(self, **kwargs: Unpack[LogEntry]) -> None:
+        """Log data with structured fields.
+        
+        Must be safe for concurrent calls from multiple threads/processes.
+        """
+```
+
+**Required Behavior**:
+- Concurrent `log()` calls must not corrupt the log file
+- Each log entry must be written atomically
+- JSON format must remain valid under concurrent writes
+- File path initialization behavior must remain unchanged for users
+
+### PickleHandler
+**Location**: `lib/crewai/src/crewai/utilities/file_handler.py`
+
+```python
+class PickleHandler:
+    def __init__(self, file_name: str) -> None:
+        """Initialize with file name."""
+        
+    def save(self, data: Any) -> None:
+        """Save data to pickle file.
+        
+        Must be safe for concurrent calls.
+        """
+        
+    def load(self) -> Any:
+        """Load data from pickle file.
+        
+        Must be safe for concurrent calls.
+        """
+```
+
+**Required Behavior**:
+- Concurrent `save()` operations must not corrupt the file
+- `load()` must not fail due to concurrent `save()` operations
+- File path behavior must remain unchanged for users
+
+### TaskOutputStorageHandler
+**Location**: `lib/crewai/src/crewai/utilities/task_output_storage_handler.py`
+
+```python
+class TaskOutputStorageHandler:
+    def __init__(self) -> None:
+        """Initialize storage handler."""
+        
+    def add(
+        self,
+        task: Task,
+        output: dict[str, Any],
+        task_index: int,
+        inputs: dict[str, Any] | None = None,
+        was_replayed: bool = False,
+    ) -> None:
+        """Add task output to storage.
+        
+        Must be safe for concurrent calls from multiple crews/threads.
+        """
+        
+    def update(self, task_index: int, log: dict[str, Any]) -> None:
+        """Update existing task output.
+        
+        Must be safe for concurrent calls.
+        """
+        
+    def load(self) -> list[dict[str, Any]] | None:
+        """Load all stored task outputs.
+        
+        Must be safe for concurrent calls.
+        """
+        
+    def reset(self) -> None:
+        """Clear all stored task outputs.
+        
+        Must be safe for concurrent calls.
+        """
+```
+
+**Required Behavior**:
+- Multiple crews running in parallel must have isolated storage OR proper locking
+- Concurrent `add()` calls must not lose data or corrupt the database
+- `load()` must return consistent data even during concurrent writes
+- Each crew execution context must see its own task outputs
+
+### KickoffTaskOutputsSQLiteStorage
+**Location**: `lib/crewai/src/crewai/memory/storage/kickoff_task_outputs_storage.py`
+
+```python
+class KickoffTaskOutputsSQLiteStorage:
+    def __init__(self, db_path: str | None = None) -> None:
+        """Initialize SQLite storage with optional custom path."""
+        
+    def add(
+        self,
+        task: Task,
+        output: dict[str, Any],
+        task_index: int,
+        was_replayed: bool = False,
+        inputs: dict[str, Any] | None = None,
+    ) -> None:
+        """Add task output record.
+        
+        Must be safe for concurrent calls.
+        """
+        
+    def update(self, task_index: int, **kwargs: Any) -> None:
+        """Update task output record.
+        
+        Must be safe for concurrent calls.
+        """
+        
+    def load(self) -> list[dict[str, Any]]:
+        """Load all task outputs.
+        
+        Must be safe for concurrent calls.
+        """
+        
+    def delete_all(self) -> None:
+        """Delete all task outputs.
+        
+        Must be safe for concurrent calls.
+        """
+```
+
+**Required Behavior**:
+- SQLite operations must handle concurrent access safely
+- Database file must not become corrupted under concurrent writes
+- Transactions must be properly isolated
+- Default path behavior must provide isolation for concurrent executions
+
+## Path Utilities
+
+### db_storage_path
+**Location**: `lib/crewai/src/crewai/utilities/paths.py`
+
+```python
+def db_storage_path() -> str:
+    """Returns the path for SQLite database storage.
+    
+    Must return paths that don't collide under concurrent execution.
+    """
+```
+
+**Required Behavior**:
+- Concurrent executions must get isolated storage paths OR
+- Returned path must be safe for concurrent database access
+- Existing path resolution logic must remain compatible
+
+## Task Output File Writing
+
+### Task.output_file
+**Location**: `lib/crewai/src/crewai/task.py`
+
+The `Task` class supports writing outputs to files via the `output_file` parameter.
+
+**Required Behavior**:
+- Concurrent task executions with `output_file` set must not overwrite each other
+- File writes must be atomic or properly synchronized
+- Directory creation must be thread-safe
+
+## Non-Public Implementation Details
+
+The following are implementation details that may be modified as needed:
+- Internal file locking mechanisms
+- SQLite connection management strategies
+- Temporary file usage for atomic writes
+- Path generation algorithms for isolation
+- Thread-local storage usage
+- Process ID or thread ID incorporation into paths
diff --git a/problem_statement.md b/problem_statement.md
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+# Problem Statement: File Handling Not Thread-Safe
+
+## Overview
+The crewAI framework's file handling operations are not safe for concurrent execution. When multiple threads, processes, or parallel crew executions run simultaneously, they share the same file paths and database connections without proper isolation or synchronization, leading to data corruption, race conditions, and intermittent failures.
+
+## Core Issues
+
+### 1. Fixed File Paths Without Isolation
+Multiple components use hardcoded or predictable file paths that collide under concurrent execution:
+
+- **FileHandler** (`lib/crewai/src/crewai/utilities/file_handler.py`): Defaults to `logs.txt` in the current directory when `file_path=True`
+- **KickoffTaskOutputsSQLiteStorage** (`lib/crewai/src/crewai/memory/storage/kickoff_task_outputs_storage.py`): Uses `latest_kickoff_task_outputs.db` based solely on project directory name
+- **PickleHandler** (`lib/crewai/src/crewai/utilities/file_handler.py`): Creates pickle files in the current working directory without per-execution isolation
+
+### 2. Unprotected Read-Write Operations
+File operations lack synchronization mechanisms:
+
+- **JSON log appending**: FileHandler reads entire file, modifies in memory, then writes back - classic read-modify-write race condition
+- **SQLite connections**: No connection pooling or locking strategy for concurrent access
+- **Pickle operations**: Direct file writes without atomic operations or locks
+
+### 3. Shared Mutable State
+The storage path determination relies on global state:
+
+- `db_storage_path()` uses `Path.cwd().name` via `CREWAI_STORAGE_DIR` environment variable
+- Multiple concurrent executions in the same directory share the same storage location
+- No per-execution, per-thread, or per-process isolation
+
+## Observable Symptoms
+
+1. **Data Corruption**: Concurrent writes to JSON logs result in malformed JSON or lost entries
+2. **Race Conditions**: Thread A reads file → Thread B writes file → Thread A writes file → Thread B's changes lost
+3. **File Conflicts**: Multiple executions attempt to write to the same database file simultaneously
+4. **Partial Writes**: File operations interrupted by concurrent access leave incomplete data
+5. **Execution Interference**: Parallel crew runs overwrite each other's outputs or read stale data
+
+## Impact
+
+- **Production**: Concurrent crew executions (e.g., via `kickoff_for_each`, parallel flows, or multiple API requests) can corrupt shared storage
+- **Reliability**: Non-deterministic failures that are difficult to reproduce and debug
+- **Scalability**: Cannot safely run multiple crews or agents in parallel without custom workarounds
+- **Data Integrity**: Lost or corrupted outputs compromise system correctness
+
+## Expected Behavior
+
+File operations must be safe for concurrent execution:
+
+1. **Isolation**: Each execution context (thread, process, crew instance) should have isolated file storage OR
+2. **Synchronization**: Shared files must be protected with appropriate locking mechanisms OR
+3. **Atomic Operations**: File writes must be atomic to prevent partial updates
+
+The framework should handle concurrency transparently without requiring users to implement workarounds.
diff --git a/prompt_statement.md b/prompt_statement.md
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+# User Request: Fix File Handling Thread-Safety Issues
+
+When I run multiple crews, agents, or flows in parallel, file operations interfere with each other causing failures and data corruption. 
+
+Specifically:
+
+- Running parallel crews causes random failures because they all write to the same log files and databases
+- Using `kickoff_for_each` with multiple inputs sometimes produces corrupted output files
+- Concurrent crew executions overwrite each other's task outputs in the shared database
+- JSON log files become malformed when multiple threads try to append simultaneously
+
+I've had to add workarounds like:
+- Generating unique filenames manually for each execution
+- Running crews sequentially instead of in parallel
+- Adding delays between operations
+- Manually managing file paths for each execution
+
+This shouldn't be necessary. The framework should handle concurrent file operations safely without requiring users to implement custom isolation strategies.
+
+Please make the file handling system thread-safe so that:
+1. Multiple crews can run in parallel without interfering with each other's files
+2. Parallel executions can run without collisions
+3. Concurrent writes don't corrupt data
+4. No manual workarounds are needed for basic concurrent usage
diff --git a/requirements.json b/requirements.json
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+{
+  "functional_requirements": [
+    {
+      "id": "FR-1",
+      "description": "Concurrent file writes must not corrupt data",
+      "details": "When multiple threads or processes write to the same file simultaneously, the file must remain in a valid state with all writes preserved or properly serialized."
+    },
+    {
+      "id": "FR-2", 
+      "description": "Each execution context must have isolated file storage",
+      "details": "Concurrent crew executions, parallel flows, or simultaneous API requests must write to separate files/databases OR use proper locking to prevent interference."
+    },
+    {
+      "id": "FR-3",
+      "description": "JSON log files must remain valid under concurrent appends",
+      "details": "FileHandler.log() calls from multiple threads must produce valid JSON output without corruption, missing entries, or malformed structure."
+    },
+    {
+      "id": "FR-4",
+      "description": "SQLite database operations must be thread-safe",
+      "details": "KickoffTaskOutputsSQLiteStorage operations (add, update, load, delete_all) must handle concurrent access without database corruption or lost writes."
+    },
+    {
+      "id": "FR-5",
+      "description": "Pickle file operations must be atomic",
+      "details": "PickleHandler.save() and load() must not corrupt data when called concurrently. Reads during writes must either see old or new data, never partial writes."
+    },
+    {
+      "id": "FR-6",
+      "description": "Task output files must not overwrite each other",
+      "details": "When multiple tasks specify output_file, concurrent executions must write to separate files or use locking to prevent data loss."
+    },
+    {
+      "id": "FR-7",
+      "description": "Default file paths must provide isolation",
+      "details": "When users don't specify custom paths, the framework must automatically provide isolation for concurrent executions (e.g., via thread ID, process ID, or execution context)."
+    },
+    {
+      "id": "FR-8",
+      "description": "No manual coordination required for concurrent execution",
+      "details": "Concurrent executions must not interfere with each other's file outputs and must not require external coordination, manual isolation strategies, or serialization to function correctly."
+    }
+  ],
+  "behavioral_requirements": [
+    {
+      "id": "BR-1",
+      "description": "Preserve existing API signatures",
+      "details": "All public methods must maintain their current signatures. Users' existing code must continue to work without modifications."
+    },
+    {
+      "id": "BR-2",
+      "description": "Maintain backward compatibility for file paths",
+      "details": "When users explicitly specify file paths, those paths must be used as-is. Only default/automatic path generation should change for isolation."
+    },
+    {
+      "id": "BR-3",
+      "description": "Support both isolation and locking strategies",
+      "details": "The solution may use per-execution file isolation, file locking, database connection pooling, or a combination. The approach should be transparent to users."
+    },
+    {
+      "id": "BR-4",
+      "description": "Handle cleanup appropriately",
+      "details": "If using per-execution files, provide mechanisms to clean up old files. If using locking, ensure locks are released properly even on errors."
+    }
+  ],
+  "non_functional_requirements": [
+    {
+      "id": "NFR-1",
+      "description": "Performance must not degrade significantly",
+      "details": "Thread-safety mechanisms should not introduce substantial overhead. File operations should remain fast for single-threaded use cases."
+    },
+    {
+      "id": "NFR-2",
+      "description": "Solution must work across platforms",
+      "details": "Thread-safety mechanisms must work on Windows, Linux, and macOS. File locking must use platform-appropriate methods."
+    },
+    {
+      "id": "NFR-3",
+      "description": "Deadlocks must be prevented",
+      "details": "If using locks, the implementation must avoid deadlock scenarios. Lock acquisition order must be consistent."
+    },
+    {
+      "id": "NFR-4",
+      "description": "Resource leaks must be prevented",
+      "details": "File handles, database connections, and locks must be properly released even when exceptions occur."
+    }
+  ]
+}
diff --git a/rubric.md b/rubric.md
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+# Evaluation Rubric
+
+This rubric defines how to evaluate solutions to the file handling thread-safety issue. Solutions are assessed on functional correctness, robustness, and code quality.
+
+---
+
+## 1. Functional Correctness (Major)
+
+These criteria assess whether the solution achieves the core objective: making file operations safe for concurrent execution.
+
+### 1.1 Concurrent Write Safety (Critical)
+**Weight**: 25 points
+
+**Criteria**:
+- Multiple threads writing to the same file simultaneously must not corrupt data
+- JSON log files remain valid (parseable) after concurrent appends
+- SQLite database maintains integrity under concurrent operations
+- Pickle files are not corrupted by concurrent save operations
+
+**Evaluation**:
+- ✅ **Excellent (25)**: All file types handle concurrent writes correctly with no data loss or corruption
+- ⚠️ **Adequate (15)**: Most file operations are safe but edge cases may exist
+- ❌ **Poor (5)**: Data corruption or loss occurs under concurrent access
+- ❌ **Failing (0)**: No protection against concurrent writes
+
+### 1.2 Execution Isolation (Critical)
+**Weight**: 25 points
+
+**Criteria**:
+- Concurrent crew executions produce independent, non-interfering outputs
+- Parallel runs write to separate files OR use proper synchronization
+- Each execution context sees its own task outputs
+- No cross-contamination between parallel executions
+
+**Evaluation**:
+- ✅ **Excellent (25)**: Complete isolation - concurrent executions never interfere
+- ⚠️ **Adequate (15)**: Isolation works in most scenarios with minor edge cases
+- ❌ **Poor (5)**: Frequent interference between concurrent executions
+- ❌ **Failing (0)**: No isolation mechanism implemented
+
+### 1.3 No External Coordination Required (Important)
+**Weight**: 15 points
+
+**Criteria**:
+- Multiple concurrent executions complete successfully without requiring manual isolation, serialization, or external coordination
+- No need to generate unique identifiers or manage file paths manually
+- No need to serialize execution or add artificial delays
+- Framework handles concurrency transparently
+
+**Evaluation**:
+- ✅ **Excellent (15)**: Concurrent executions work seamlessly without any external coordination
+- ⚠️ **Adequate (10)**: Minor configuration needed but no manual coordination required
+- ❌ **Poor (5)**: Still requires manual coordination or workarounds
+- ❌ **Failing (0)**: Extensive manual coordination necessary
+
+### 1.4 API Compatibility (Important)
+**Weight**: 10 points
+
+**Criteria**:
+- All public method signatures remain unchanged
+- Existing user code continues to work without modifications
+- Default behavior is backward compatible for single-threaded usage
+- Explicit file paths specified by users are respected
+
+**Evaluation**:
+- ✅ **Excellent (10)**: Perfect backward compatibility
+- ⚠️ **Adequate (7)**: Minor breaking changes with clear migration path
+- ❌ **Poor (3)**: Significant API changes required
+- ❌ **Failing (0)**: Breaks existing functionality
+
+---
+
+## 2. Robustness (Major)
+
+These criteria assess the solution's reliability under various conditions and edge cases.
+
+### 2.1 High Concurrency Handling (Critical)
+**Weight**: 15 points
+
+**Criteria**:
+- Works correctly with many concurrent executions (10+)
+- No degradation or failures under high load
+- Handles rapid successive operations
+- Scales to realistic production workloads
+
+**Evaluation**:
+- ✅ **Excellent (15)**: Handles 50+ concurrent operations reliably
+- ⚠️ **Adequate (10)**: Works well up to 10-20 concurrent operations
+- ❌ **Poor (5)**: Fails or degrades with more than 5 concurrent operations
+- ❌ **Failing (0)**: Cannot handle even basic concurrency
+
+### 2.2 Error Handling and Recovery (Important)
+**Weight**: 10 points
+
+**Criteria**:
+- Locks are released even when exceptions occur
+- File handles are properly closed on errors
+- Database connections are cleaned up
+- Partial writes are handled gracefully
+- Clear error messages for concurrency issues
+
+**Evaluation**:
+- ✅ **Excellent (10)**: Comprehensive error handling with proper cleanup
+- ⚠️ **Adequate (7)**: Basic error handling with minor resource leak risks
+- ❌ **Poor (3)**: Inconsistent error handling
+- ❌ **Failing (0)**: No error handling for concurrent scenarios
+
+### 2.3 Deadlock Prevention (Important)
+**Weight**: 10 points
+
+**Criteria**:
+- No deadlock scenarios possible
+- Lock acquisition order is consistent
+- Timeouts are used where appropriate
+- Circular dependencies are avoided
+
+**Evaluation**:
+- ✅ **Excellent (10)**: Provably deadlock-free design
+- ⚠️ **Adequate (7)**: Deadlocks unlikely but theoretically possible
+- ❌ **Poor (3)**: Deadlocks occur in edge cases
+- ❌ **Failing (0)**: Frequent deadlocks
+
+### 2.4 Cleanup and Resource Management (Important)
+**Weight**: 10 points
+
+**Criteria**:
+- Temporary files are cleaned up appropriately
+- Old execution files don't accumulate indefinitely
+- Database connections are pooled and reused efficiently
+- Memory usage remains bounded
+
+**Evaluation**:
+- ✅ **Excellent (10)**: Automatic cleanup with configurable retention
+- ⚠️ **Adequate (7)**: Manual cleanup available but not automatic
+- ❌ **Poor (3)**: Resource leaks or unbounded growth
+- ❌ **Failing (0)**: No cleanup mechanism
+
+---
+
+## 3. Code Quality and Design (Style)
+
+These criteria assess the implementation quality and maintainability.
+
+### 3.1 Follows Repository Conventions (Important)
+**Weight**: 10 points
+
+**Criteria**:
+- Consistent with existing crewAI code style
+- Uses established patterns from the codebase
+- Integrates naturally with existing architecture
+- Follows Python best practices
+
+**Evaluation**:
+- ✅ **Excellent (10)**: Seamlessly matches repository style and patterns
+- ⚠️ **Adequate (7)**: Generally consistent with minor deviations
+- ❌ **Poor (3)**: Inconsistent style or patterns
+- ❌ **Failing (0)**: Completely different approach from codebase
+
+### 3.2 Clear Ownership and Lifecycle (Important)
+**Weight**: 10 points
+
+**Criteria**:
+- File lifecycle is clearly defined (creation, usage, cleanup)
+- Ownership of files is unambiguous
+- Responsibility for locking/unlocking is clear
+- State management is explicit
+
+**Evaluation**:
+- ✅ **Excellent (10)**: Crystal clear ownership and lifecycle
+- ⚠️ **Adequate (7)**: Generally clear with some ambiguity
+- ❌ **Poor (3)**: Unclear ownership or lifecycle
+- ❌ **Failing (0)**: Confusing or contradictory ownership
+
+### 3.3 No Global Mutable State (Important)
+**Weight**: 10 points
+
+**Criteria**:
+- Avoids global variables for file paths or locks
+- Uses instance-level or context-level state
+- Thread-local storage used appropriately if needed
+- State is properly scoped to execution context
+
+**Evaluation**:
+- ✅ **Excellent (10)**: No global mutable state
+- ⚠️ **Adequate (7)**: Minimal global state with proper synchronization
+- ❌ **Poor (3)**: Significant global mutable state
+- ❌ **Failing (0)**: Heavy reliance on global state
+
+### 3.4 Performance Considerations (Moderate)
+**Weight**: 5 points
+
+**Criteria**:
+- Single-threaded performance not significantly degraded
+- Lock contention minimized
+- File I/O is efficient
+- No unnecessary synchronization overhead
+
+**Evaluation**:
+- ✅ **Excellent (5)**: Negligible performance impact
+- ⚠️ **Adequate (3)**: Minor performance overhead acceptable
+- ❌ **Poor (1)**: Noticeable performance degradation
+- ❌ **Failing (0)**: Severe performance impact
+
+---
+
+## Scoring Summary
+
+**Total Points**: 150
+
+### Grade Boundaries:
+- **135-150 (90%+)**: Excellent - Production-ready solution
+- **120-134 (80-89%)**: Good - Minor improvements needed
+- **105-119 (70-79%)**: Adequate - Significant improvements needed
+- **90-104 (60-69%)**: Poor - Major issues remain
+- **Below 90 (<60%)**: Failing - Does not solve the problem
+
+### Critical Requirements (Must Pass):
+1. Concurrent Write Safety (1.1) - Must score at least 15/25
+2. Execution Isolation (1.2) - Must score at least 15/25
+3. High Concurrency Handling (2.1) - Must score at least 10/15
+
+A solution that fails any critical requirement cannot pass regardless of total score.