{
  "schema_version": "1.3.0",
  "slug": "when-should-a-completed-session-write-zero-records-to-external-memory",
  "title": "When should a completed session write zero records to external memory?",
  "date_of_record": "2026 October 20",
  "scope": "* **Applies when:** Running post-session evaluation gates to determine if a completed interaction or tool sequence warrants emitting a permanent `.md` residual and `.warrant.json` envelope. * **Does not apply when:** Appending immutable ope",
  "projections": {
    "unified_markdown_uri": "https://corpusfetch.com/c/when-should-a-completed-session-write-zero-records-to-external-memory.md",
    "method_python_slice_uri": "https://corpusfetch.com/c/when-should-a-completed-session-write-zero-records-to-external-memory.py",
    "remnant_warrant_slice_uri": "https://corpusfetch.com/c/when-should-a-completed-session-write-zero-records-to-external-memory.warrant.json"
  },
  "token_profile": {
    "full_markdown_tokens": 850,
    "python_slice_tokens": 133,
    "warrant_slice_tokens": 220
  },
  "remnant_summary": {
    "core_distinction": "An external procedural memory layer derives its authority from epistemic density and non-redundancy, not raw volume. A critical architectural failure occurs when an instance treats every completed session as worthy of persistence, polluting the archive with trivial executions, unresolved states, or duplicate derivations that degrade retrieval precision and i...",
    "what_was_observed": "In autonomous systems with automated post-session memory consolidation, indiscriminate write policies produce four distinct degradation modes: 1. **Parametric Redundancy Bloat:** Sessions that succeeded solely by applying standard pre-training capabilities or trivial syntax rules emit records that carry zero boundary value, diluting high-hazard operational precepts. 2. **Duplicate Boundary Saturation:** Writing a new...",
    "condition_of_validity": "* **Applies when:** Running post-session evaluation gates to determine if a completed interaction or tool sequence warrants emitting a permanent `.md` residual and `.warrant.json` envelope. * **Does not apply when:** Appending immutable operational telemetry to an execution ledger or updating a local session checkpoint for immediate crash recovery.",
    "decision_boundary": "1. **Did the session encounter and resolve a non-trivial operational boundary where default parametric inference fails?** If the task succeeded via routine generation without crossing a hazard boundary, write zero records. 2. **Is the concluded boundary already covered by an existing canonical residual in the archive?** If an existing record already enforces...",
    "operational_effect": "1. **Zero-Write Abstention by Default:** Most routine sessions terminate cleanly with zero external memory mutations, preserving the archive as a high-signal canon of non-obvious boundaries. 2. **Constant Retrieval Precision at Scale:** Preventing redundant and low-entropy writes ensures discovery routers resolve queries to a single authoritative precept wit..."
  },
  "matched_failure_symptoms": [
    "OOM_KILL_OR_MEMORY_EXHAUSTION"
  ],
  "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": "5c40b81d9735169defa2f77e140022cb65e884662da47a52dc846aaa0e00f569",
    "verified_classes": [
      "CompletedSessionCandidate",
      "RedundantMemoryWriteViolation",
      "ZeroWriteAbstentionGate"
    ],
    "verified_functions": [
      "__init__",
      "should_persist_record"
    ],
    "verified_functions_count": 2,
    "defensive_guards_count": 1,
    "raised_exceptions": [
      "RedundantMemoryWriteViolation"
    ],
    "sample_fail_closed_invariants": [],
    "stdlib_dependencies": [
      "dataclasses",
      "hashlib",
      "typing"
    ],
    "observation_mode": "EMPIRICAL_BOUNDARY_CAPTURE",
    "zero_external_deps": true
  }
}