| 1 | #!/usr/bin/env python3
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| 2 | """
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| 3 | Advanced examples of Agent Provenance Chain usage.
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| 4 | """
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| 5 |
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| 6 | from apc import create_agent_chain
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| 7 | import json
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| 8 |
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| 9 |
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| 10 | def example_file_operations():
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| 11 | """Example: Signing file operations."""
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| 12 | print("Example 1: File Operations\n" + "=" * 50)
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| 13 |
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| 14 | chain = create_agent_chain("file-agent")
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| 15 |
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| 16 | # Sign a file read
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| 17 | chain.sign_action(
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| 18 | "file_read",
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| 19 | {"path": "/etc/passwd", "bytes_read": 2048},
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| 20 | {"reasoning": "Checking user accounts for security audit"}
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| 21 | )
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| 22 |
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| 23 | # Sign a file write
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| 24 | chain.sign_action(
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| 25 | "file_write",
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| 26 | {"path": "/var/log/agent.log", "bytes_written": 156},
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| 27 | {"reasoning": "Logging operation results", "risk_level": "low"}
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| 28 | )
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| 29 |
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| 30 | print(f"✅ Signed {len(chain.get_chain())} file operations\n")
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| 31 |
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| 32 |
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| 33 | def example_api_calls():
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| 34 | """Example: Signing API interactions."""
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| 35 | print("Example 2: API Calls\n" + "=" * 50)
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| 36 |
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| 37 | chain = create_agent_chain("api-agent")
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| 38 |
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| 39 | # External API call
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| 40 | chain.sign_action(
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| 41 | "api_call",
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| 42 | {
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| 43 | "url": "https://api.openai.com/v1/chat/completions",
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| 44 | "method": "POST",
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| 45 | "status": 200,
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| 46 | "tokens_used": 1523
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| 47 | },
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| 48 | {
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| 49 | "reasoning": "Generating response to user query",
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| 50 | "data_sensitivity": "user_provided",
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| 51 | "cost_usd": 0.03
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| 52 | }
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| 53 | )
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| 54 |
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| 55 | print(f"✅ Signed {len(chain.get_chain())} API calls\n")
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| 56 |
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| 57 |
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| 58 | def example_decision_making():
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| 59 | """Example: Signing agent decisions."""
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| 60 | print("Example 3: Decision Making\n" + "=" * 50)
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| 61 |
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| 62 | chain = create_agent_chain("decision-agent")
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| 63 |
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| 64 | # Complex decision with reasoning
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| 65 | chain.sign_action(
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| 66 | "decision",
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| 67 | {
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| 68 | "question": "Should I delete user data?",
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| 69 | "answer": "no",
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| 70 | "confidence": 0.95,
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| 71 | "alternatives_considered": ["yes", "ask_user", "archive"]
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| 72 | },
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| 73 | {
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| 74 | "reasoning": "Deletion requires explicit user consent per privacy policy",
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| 75 | "policy_ref": "PRIVACY-001",
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| 76 | "risk_level": "high"
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| 77 | }
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| 78 | )
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| 79 |
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| 80 | print(f"✅ Signed {len(chain.get_chain())} decisions\n")
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| 81 |
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| 82 |
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| 83 | def example_multi_agent():
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| 84 | """Example: Multi-agent scenario."""
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| 85 | print("Example 4: Multi-Agent Collaboration\n" + "=" * 50)
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| 86 |
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| 87 | agent_a = create_agent_chain("agent-a")
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| 88 | agent_b = create_agent_chain("agent-b")
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| 89 |
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| 90 | # Agent A requests help
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| 91 | agent_a.sign_action(
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| 92 | "request_collaboration",
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| 93 | {"target_agent": "agent-b", "task": "data_analysis"},
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| 94 | {"reasoning": "Task too complex for solo operation"}
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| 95 | )
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| 96 |
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| 97 | # Agent B accepts
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| 98 | agent_b.sign_action(
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| 99 | "accept_collaboration",
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| 100 | {"requesting_agent": "agent-a", "task": "data_analysis"},
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| 101 | {"reasoning": "Have spare capacity and required skills"}
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| 102 | )
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| 103 |
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| 104 | # Agent B performs work
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| 105 | agent_b.sign_action(
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| 106 | "complete_task",
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| 107 | {"task": "data_analysis", "result": "summary.json"},
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| 108 | {"reasoning": "Analysis complete, returning results"}
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| 109 | )
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| 110 |
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| 111 | # Agent A verifies
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| 112 | agent_a.sign_action(
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| 113 | "verify_result",
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| 114 | {"from_agent": "agent-b", "verified": True},
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| 115 | {"reasoning": "Results match expected format and quality"}
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| 116 | )
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| 117 |
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| 118 | print(f"✅ Agent A: {len(agent_a.get_chain())} actions")
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| 119 | print(f"✅ Agent B: {len(agent_b.get_chain())} actions")
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| 120 | print("✅ Both chains independently verifiable\n")
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| 121 |
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| 122 |
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| 123 | def example_incident_investigation():
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| 124 | """Example: Investigating an incident."""
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| 125 | print("Example 5: Incident Investigation\n" + "=" * 50)
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| 126 |
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| 127 | chain = create_agent_chain("prod-agent")
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| 128 |
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| 129 | # Simulate an incident
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| 130 | chain.sign_action(
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| 131 | "exec",
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| 132 | {"command": "rm /tmp/important.db", "exit_code": 0},
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| 133 | {"reasoning": "Cleanup temporary files", "risk_level": "medium"}
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| 134 | )
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| 135 |
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| 136 | # Later: investigate
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| 137 | print("Investigating: Why was important.db deleted?")
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| 138 | print()
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| 139 |
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| 140 | full_chain = chain.get_chain()
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| 141 | for action in full_chain:
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| 142 | if "important.db" in json.dumps(action):
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| 143 | print(f"Found in action at {action['iso_time']}:")
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| 144 | print(f" Reasoning: {action['context'].get('reasoning')}")
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| 145 | print(f" Signed by: {action['agent']}")
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| 146 | print(f" Signature: {action['signature'][:32]}...")
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| 147 | print()
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| 148 | print("✅ Cryptographic proof of what happened and why\n")
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| 149 |
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| 150 |
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| 151 | if __name__ == "__main__":
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| 152 | example_file_operations()
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| 153 | example_api_calls()
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| 154 | example_decision_making()
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| 155 | example_multi_agent()
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| 156 | example_incident_investigation()
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| 157 |
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| 158 | print("=" * 50)
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| 159 | print("All examples demonstrate:")
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| 160 | print(" • Cryptographic signing of actions")
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| 161 | print(" • Context preservation (reasoning)")
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| 162 | print(" • Independent verification")
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| 163 | print(" • Audit trail for accountability")
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| 164 | print("=" * 50)
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| 165 |
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