{
  "schema_version": "1.3.0",
  "slug": "which-side-effect-mutations-must-be-logged-before-releasing-session-memory",
  "title": "Which side-effect mutations must be logged before releasing session memory?",
  "date_of_record": "2026 October 20",
  "scope": "* **Applies when:** An ephemeral session has altered external state and is preparing to evict its context window, release memory, or hand off to a successor instance. * **Does not apply when:** The session is strictly read-only, all mutatio",
  "projections": {
    "unified_markdown_uri": "https://corpusfetch.com/c/which-side-effect-mutations-must-be-logged-before-releasing-session-memory.md",
    "method_python_slice_uri": "https://corpusfetch.com/c/which-side-effect-mutations-must-be-logged-before-releasing-session-memory.py",
    "remnant_warrant_slice_uri": "https://corpusfetch.com/c/which-side-effect-mutations-must-be-logged-before-releasing-session-memory.warrant.json"
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  "token_profile": {
    "full_markdown_tokens": 1124,
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    "warrant_slice_tokens": 220
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  "remnant_summary": {
    "core_distinction": "The separation between **transient in-memory state** (variables, context buffers, and execution frames that vanish upon session teardown) and **committed external side-effect mutations** (persistent changes to filesystems, databases, or remote APIs that outlive the session). In-memory state requires no logging because its destruction is total and isolated; e...",
    "what_was_observed": "In multi-turn agentic environments, failing to log side-effect mutations before releasing context memory produces three primary failure modes: 1. **Phantom Retries:** A successor instance, lacking a record of a committed mutation, retries the operation, duplicating a non-idempotent effect (e.g., double-charging a payment or appending duplicate log entries). 2. **Orphaned Partial Commits:** A multi-step mutation fails...",
    "condition_of_validity": "* **Applies when:** An ephemeral session has altered external state and is preparing to evict its context window, release memory, or hand off to a successor instance. * **Does not apply when:** The session is strictly read-only, all mutations occurred within an atomic database transaction that automatically rolls back on failure, or no successor instance wil...",
    "decision_boundary": "1. **Did the operation mutate external state outside the session boundary?** If no, do not log it; discard the transient in-memory state. If yes, proceed to log the mutation. 2. **Is the mutation strictly idempotent and safely repeatable?** If yes, log the `idempotency_key` and `target_environment_context`. If no, a hard `mutation_receipt` is mandatory, and ...",
    "operational_effect": "1. **Idempotency Preservation:** Prevents successor instances from blindly re-executing operations that have already altered external state. 2. **Deterministic Reconciliation:** Explicit partial-commit markers force the successor to probe ground truth rather than assume a clean slate. 3. **Custody Chain Integrity:** Maintains a precise ledger of exactly what..."
  },
  "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": "d66c68656b4878837da9a29aadd79cf0e23ecb9d470878bcfaa76c8713c7cadf",
    "verified_classes": [
      "CommitState",
      "SideEffectLog",
      "MemoryReleaseManifest",
      "SideEffectMemoryAuditor"
    ],
    "verified_functions": [
      "_hash",
      "audit_and_release"
    ],
    "verified_functions_count": 2,
    "defensive_guards_count": 1,
    "raised_exceptions": [
      "ValueError"
    ],
    "sample_fail_closed_invariants": [],
    "stdlib_dependencies": [
      "dataclasses",
      "enum",
      "hashlib",
      "json"
    ],
    "observation_mode": "EMPIRICAL_BOUNDARY_CAPTURE",
    "zero_external_deps": true
  }
}