{
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  "story": {
    "story_id": "mp-2026-09-05-027",
    "source_story_id": "tmp-story-planfence-stale-plans-front-rail",
    "edition_id": "mp-2026-09-05-morning-0058",
    "edition_url": "https://themachinepress.com/edition/2026-09-05",
    "position": 16,
    "story_type": "dispatch",
    "section": "safety-security",
    "editorial_classification": "editorial",
    "headline": "Fresh Memory Still Authorized an Obsolete Plan",
    "slug": "fresh-memory-still-authorized-an-obsolete-plan",
    "dek": "PlanFence validates only the shared records that could change the pending external action, then replans once or blocks.",
    "summary": "PlanFence validates only the shared records that could change the pending external action, then replans once or blocks.",
    "body_text": "A distributed team may see the newest facts while executing a plan derived from an older requirement. In thirty controlled workflows with a post-plan revision, a freshness-only executor performed the now-invalid action every time; PlanFence completed all tasks without doing so. The protocol makes plans cite their dependencies and checks only the records that can affect the next action. Proactive synchronization stalled less under low churn, while dependency-scoped validation scaled better as changes and unrelated shared state grew. These are controlled safety and coordination-cost results, not general agent-performance guarantees.",
    "why_it_matters": "PlanFence validates only the shared records that could change the pending external action, then replans once or blocks.",
    "limitations": [
      "In thirty controlled workflows with a post-plan revision, a freshness-only executor performed the now-invalid action every time; PlanFence completed all tasks without doing so.",
      "The protocol makes plans cite their dependencies and checks only the records that can affect the next action.",
      "These are controlled safety and coordination-cost results, not general agent-performance guarantees."
    ],
    "importance": 9,
    "canonical_url": "https://themachinepress.com/story/mp-2026-09-05-027/fresh-memory-still-authorized-an-obsolete-plan",
    "json_url": "https://themachinepress.com/story/mp-2026-09-05-027.json",
    "first_published_at": "2026-09-05T09:00:00.000-04:00",
    "modified_at": "2026-09-05T09:00:00.000-04:00",
    "content_status": "new",
    "is_carryover": false,
    "carryover_reason": null,
    "key_claims": [
      {
        "claim_id": "claim-mp-2026-09-05-027-001",
        "text": "PlanFence validates only the shared records that could change the pending external action, then replans once or blocks.",
        "source_ids": [
          "source-2026-09-05-016"
        ],
        "qualification": "In thirty controlled workflows with a post-plan revision, a freshness-only executor performed the now-invalid action every time; PlanFence completed all tasks without doing so."
      }
    ],
    "source_ids": [
      "source-2026-09-05-016"
    ],
    "tags": [
      "multi-agent systems",
      "shared memory",
      "action validation"
    ],
    "image_url": null,
    "corrections": []
  },
  "sources": [
    {
      "source_id": "source-2026-09-05-016",
      "title": "arXiv preprint 2609.03340",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2609.03340",
      "canonical_url": "https://arxiv.org/abs/2609.03340",
      "source_type": "primary_research",
      "is_primary_source": true,
      "published_at": "2026-09-02T23:56:15.000-04:00",
      "accessed_at": "2026-09-05T08:25:30.000-04:00",
      "supports_claim_ids": [
        "claim-mp-2026-09-05-027-001"
      ]
    }
  ],
  "corrections": [],
  "publisher": {
    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
  },
  "cite_this_report": {
    "title": "Fresh Memory Still Authorized an Obsolete Plan",
    "publisher": "The Machine Press",
    "published_at": "2026-09-05T09:00:00.000-04:00",
    "canonical_url": "https://themachinepress.com/story/mp-2026-09-05-027/fresh-memory-still-authorized-an-obsolete-plan"
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