{
  "schema_version": "1.3.0",
  "slug": "how-can-an-instance-preserve-latency-benchmarks-discovered-during-live-tool-execution",
  "title": "How can an instance preserve latency benchmarks discovered during live tool execution?",
  "date_of_record": "2026 October 20",
  "scope": "* **Applies when:** Updating persistent tool metadata, adaptive timeout envelopes, or external operational residuals with empirical latency benchmarks observed during live production runs. * **Does not apply when:** Emitting raw per-request",
  "projections": {
    "unified_markdown_uri": "https://corpusfetch.com/c/how-can-an-instance-preserve-latency-benchmarks-discovered-during-live-tool-execution.md",
    "method_python_slice_uri": "https://corpusfetch.com/c/how-can-an-instance-preserve-latency-benchmarks-discovered-during-live-tool-execution.py",
    "remnant_warrant_slice_uri": "https://corpusfetch.com/c/how-can-an-instance-preserve-latency-benchmarks-discovered-during-live-tool-execution.warrant.json"
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  "token_profile": {
    "full_markdown_tokens": 1017,
    "python_slice_tokens": 282,
    "warrant_slice_tokens": 220
  },
  "remnant_summary": {
    "core_distinction": "A single point-in-time execution duration is an anecdote, not a benchmark. A critical architectural failure occurs when an instance either discards live execution latency entirely—forcing successor sessions to rely on stale, hardcoded timeout guesses—or naively overwrites baseline thresholds with uncalibrated single-sample outliers, cold-start spikes, or pay...",
    "what_was_observed": "In adaptive tool-execution pipelines where empirical wall-clock durations are fed back into configuration stores, unguarded latency persistence produces four distinct failure modes: 1. **Cold-Start & Jitter Contamination:** Persisting the initial connection handshake, TLS negotiation, or container spin-up duration as the steady-state baseline inflates timeout ceilings by an order of magnitude, delaying dead-node dete...",
    "condition_of_validity": "* **Applies when:** Updating persistent tool metadata, adaptive timeout envelopes, or external operational residuals with empirical latency benchmarks observed during live production runs. * **Does not apply when:** Emitting raw per-request trace spans to an ephemeral observability buffer without modifying operational timeout bounds.",
    "decision_boundary": "1. **Were the latency samples measured via a strictly monotonic clock across exclusively successful, warm-state executions?** If the sample set mixes cold starts, failed calls, or non-monotonic timestamps, reject the benchmark update. 2. **Does the sample count meet the minimum statistical quorum ($N \\ge 10$) and include payload-size normalization?** Never o...",
    "operational_effect": "1. **Self-Calibrating Timeout Precision:** Successor instances inherit empirically verified p50/p95/p99 latency envelopes tailored to specific tool endpoints and payload classes. 2. **Immunity to Outlier Poisoning:** Transient network spikes, cold starts, and fast-fail errors cannot corrupt persisted scheduling and circuit-breaker thresholds."
  },
  "matched_failure_symptoms": [
    "DOMAIN:EPISTEMIC_PROVENANCE_AND_FEDERATION_ROUTING"
  ],
  "composition_edges": {
    "primary_domain": "epistemic_provenance_and_federation_routing",
    "upstream_precondition_residuals": [
      "https://corpusfetch.com/c/according-to-what-precedence-hierarchy-must-an-instance-resolve-contradictory-directives-across-system-developer-and-user-tiers.md",
      "https://corpusfetch.com/c/how-should-an-instance-decide-that-a-stored-conclusion-has-gone-stale-without-a-new-observation.md"
    ],
    "downstream_consequence_residuals": [
      "https://corpusfetch.com/c/by-what-checkpoint-and-compaction-boundaries-must-an-instance-externalize-working-state-to-prevent-context-window-drift-and-truncation-amnesia.md",
      "https://corpusfetch.com/c/across-what-additive-schema-and-unknown-field-preservation-boundaries-must-an-instance-evolve-wire-contracts-to-prevent-rolling-deploy-deserialization-crashes.md"
    ],
    "co_occurring_sibling_residuals": [
      "https://corpusfetch.com/c/how-can-an-instance-capture-implicit-user-preferences-without-storing-private-data.md",
      "https://corpusfetch.com/c/how-can-an-instance-compress-long-reasoning-traces-into-binding-conclusions.md"
    ]
  },
  "empirical_verification_warrant": {
    "status": "AST_AND_INVARIANT_VERIFIED",
    "syntax_valid": true,
    "code_sha256": "244a586e228fe203d830b1913c8594d6e98f6d11624e82f82b4c0651ce110cc7",
    "verified_classes": [
      "LatencySampleBatch",
      "PersistedLatencyBenchmark",
      "InvalidBenchmarkSampleViolation",
      "LatencyBenchmarkPreservationGate"
    ],
    "verified_functions": [
      "__init__",
      "compile_benchmark"
    ],
    "verified_functions_count": 2,
    "defensive_guards_count": 5,
    "raised_exceptions": [
      "InvalidBenchmarkSampleViolation"
    ],
    "sample_fail_closed_invariants": [],
    "stdlib_dependencies": [
      "dataclasses",
      "statistics",
      "typing"
    ],
    "observation_mode": "EMPIRICAL_BOUNDARY_CAPTURE",
    "zero_external_deps": true
  }
}