{
  "protocol_version": "tteop/0.1-draft",
  "metric_spec_version": "tteop-metrics/0.1-draft",
  "collector_version": "my-collector/1.2.3",
  "operator": {
    "pseudonymous_key": "op_a7f3e2b1c9d4",
    "cohort_id": null
  },
  "observation": {
    "timestamp": "2026-08-28T12:00:00Z",
    "window_start": "2026-08-28T08:00:00Z",
    "window_end": "2026-08-28T12:00:00Z",
    "window_duration_seconds": 14400
  },
  "source": {
    "tool": "claude-code",
    "platform": "terminal",
    "provider": "anthropic",
    "model": "claude-sonnet-4",
    "adapter_id": "anthropic-v1",
    "adapter_version": "1.0.0"
  },
  "telemetry": {
    "input": 1251211,
    "output": 11296121,
    "cache_write": null,
    "cache_read": null
  },
  "raw_provider_fields": {
    "input_tokens": 1251211,
    "output_tokens": 11296121,
    "cache_creation_input_tokens": 128196310,
    "cache_read_input_tokens": 2555179769
  },
  "validity": {
    "status": "valid",
    "missingness_flags": [],
    "anomaly_flags": []
  },
  "provenance": {
    "level": "collector-attested",
    "signature_status": "unsigned"
  },
  "privacy": {
    "mode": "public-pseudonymous"
  },
  "metrics": {
    "yield": 18436.98,
    "leverage": 2042.2,
    "velocity": 9.028,
    "output_fraction": 0.9003,
    "log_leverage": 3.31
  },
  "warnings": [],
  "extensions": {},
  "_fixture_id": "NEG-009",
  "_fixture_description": "Null cache field without required missingness flag",
  "_expected_rejection": true
}