QWED Open Responses: verified tool calls for AI agents

AI Agent Output → Guards → Verified? → Execute
                           │
                    YES ───┘
                    NO ────→ Block + Error

┌─────────────────────────────────────────────────────────────────┐
│                    AI Agent (GPT, Claude, etc.)                  │
│                                                                  │
│  "Call calculator with x=150, y=10, result=1600"                 │
└──────────────────────────┬───────────────────────────────────────┘
                           │
                           │ Tool Call / Structured Output
                           ▼
┌─────────────────────────────────────────────────────────────────┐
│                QWED Open Responses Verifier                      │
├─────────────────────────────────────────────────────────────────┤
│                                                                  │
│  ┌─────────────┐  ┌─────────────┐  ┌───────────────────────────┐│
│  │ SchemaGuard │  │  ToolGuard  │  │       MathGuard          ││
│  │  JSON Valid │  │  Blocklist  │  │  150 × 10 ≠ 1600 ❌      ││
│  └─────────────┘  └─────────────┘  └───────────────────────────┘│
│                                                                  │
│  ┌─────────────┐  ┌─────────────┐  ┌───────────────────────────┐│
│  │ StateGuard  │  │ArgumentGuard│  │      SafetyGuard         ││
│  │ Transitions │  │ Type Check  │  │  PII, Injection, Budget  ││
│  └─────────────┘  └─────────────┘  └───────────────────────────┘│
│                                                                  │
│               MathGuard Failed: 150 × 10 = 1500, not 1600       │
│                                                                  │
└──────────────────────────┬───────────────────────────────────────┘
                           │
                           ▼
                  ┌─────────────────┐
                  │  ❌ BLOCKED     │
                  │  Return error   │
                  └─────────────────┘

pip install qwed-open-responses

# OpenAI
pip install qwed-open-responses[openai]

# LangChain
pip install qwed-open-responses[langchain]

# All integrations
pip install qwed-open-responses[all]

from qwed_open_responses import ResponseVerifier
from qwed_open_responses.guards import ToolGuard, MathGuard, SafetyGuard

verifier = ResponseVerifier()

# Verify a tool call before execution
result = verifier.verify_tool_call(
    tool_name="calculator",
    arguments={
        "operation": "multiply",
        "x": 150,
        "y": 10,
        "result": 1500  # Correct!
    },
    guards=[ToolGuard(), MathGuard(), SafetyGuard()]
)

if result.verified:
    print("✅ Safe to execute")
    execute_tool(result.tool_name, result.arguments)
else:
    print(f"❌ Blocked: {result.block_reason}")
    print(f"   Failed guard: {result.failed_guard}")

from qwed_open_responses.guards import SchemaGuard

# Define expected schema
order_schema = {
    "type": "object",
    "required": ["order_id", "total", "items"],
    "properties": {
        "order_id": {"type": "string"},
        "total": {"type": "number", "minimum": 0},
        "items": {"type": "array", "minItems": 1}
    }
}

result = verifier.verify_structured_output(
    output={
        "order_id": "ORD-123",
        "total": 99.99,
        "items": [{"name": "Widget", "price": 99.99}]
    },
    guards=[SchemaGuard(schema=order_schema)]
)

from langchain_openai import ChatOpenAI
from langchain.agents import create_tool_calling_agent, AgentExecutor
from qwed_open_responses.middleware.langchain import QWEDCallbackHandler

# Create callback with guards
callback = QWEDCallbackHandler(
    guards=[ToolGuard(), SafetyGuard()],
    block_on_failure=True,  # Stop execution if guard fails
)

# Add to agent
llm = ChatOpenAI(model="gpt-4")
agent = create_tool_calling_agent(llm, tools, prompt)
executor = AgentExecutor(
    agent=agent,
    tools=tools,
    callbacks=[callback]
)

# Every tool call is now verified!
result = executor.invoke({"input": "Calculate 25% of 500"})

from qwed_open_responses.middleware.openai_sdk import VerifiedOpenAI
from qwed_open_responses.guards import SchemaGuard, SafetyGuard

# Create verified client
client = VerifiedOpenAI(
    api_key="sk-...",
    guards=[
        SchemaGuard(schema=my_schema),
        SafetyGuard(block_pii=True)
    ]
)

# Use normally - verification is automatic
response = client.chat.completions.create(
    model="gpt-4",
    messages=[{"role": "user", "content": "Generate an order"}],
    tools=my_tools
)

# Tool calls are verified before returning
for tool_call in response.choices[0].message.tool_calls:
    print(f"Verified tool call: {tool_call.function.name}")

from qwed_open_responses.middleware.streaming_interceptor import OpenResponsesMiddleware
from qwed_open_responses.guards import ToolGuard, SafetyGuard

middleware = OpenResponsesMiddleware(
    guards=[ToolGuard(), SafetyGuard()],
    block_on_failure=True,       # Replace blocked items with system_intervention
    on_blocked=my_callback,      # Optional callback when an item is blocked
)

# Wrap any async stream of Open Responses items
async for item in middleware.verify_stream(response_stream):
    process(item)

# Check runtime stats
print(middleware.get_stats())
# {"total": 12, "verified": 10, "blocked": 2}

{
  "type": "system_intervention",
  "status": "blocked",
  "tool_name": "execute_shell",
  "reason": "QWED blocked execute_shell: dangerous tool call",
  "verification": {
    "guards_passed": ["SafetyGuard"],
    "guards_failed": ["ToolGuard"],
    "mechanism": "QWED Open Responses Streaming Interceptor"
  }
}

from qwed_open_responses.guards import ToolGuard, SafetyGuard

# Custom tool blocklist
tool_guard = ToolGuard(
    blocklist=["execute_shell", "delete_database", "send_email"],
    allow_unknown=False  # Block tools not in whitelist
)

# Custom safety settings
safety_guard = SafetyGuard(
    block_pii=True,
    block_injection=True,
    max_budget=50.0,  # $50 limit
    harmful_patterns=["password", "secret", "token"]
)

verifier = ResponseVerifier(guards=[tool_guard, safety_guard])