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  "story": {
    "story_id": "mp-2026-08-25-027",
    "source_story_id": "tmp-story-repo-skill-staleness",
    "edition_id": "mp-2026-08-25-morning-0047",
    "edition_url": "https://themachinepress.com/edition/2026-08-25",
    "position": 16,
    "story_type": "dispatch",
    "section": "developer-tools",
    "editorial_classification": "editorial",
    "headline": "The Repository Changed and the Skill Stayed Quiet",
    "slug": "the-repository-changed-and-the-skill-stayed-quiet",
    "dek": "Every one of 105 selected release transitions invalidated part of the prior repository skill set.",
    "summary": "Every one of 105 selected release transitions invalidated part of the prior repository skill set.",
    "body_text": "Across 57 repositories, six frontier agents reached only 29.9 to 69.7 percent avg@3 macro F1 when asked to update V1 skills from official V1-to-V2 patches. Missed files left stale instructions intact, while broader edits raised recall at the cost of precision. This final text-only report fills the front rail beneath the feature.",
    "why_it_matters": "Every one of 105 selected release transitions invalidated part of the prior repository skill set.",
    "limitations": [
      "Across 57 repositories, six frontier agents reached only 29.9 to 69.7 percent avg@3 macro F1 when asked to update V1 skills from official V1-to-V2 patches.",
      "This final text-only report fills the front rail beneath the feature."
    ],
    "importance": 8,
    "canonical_url": "https://themachinepress.com/story/mp-2026-08-25-027/the-repository-changed-and-the-skill-stayed-quiet",
    "json_url": "https://themachinepress.com/story/mp-2026-08-25-027.json",
    "first_published_at": "2026-08-25T09:00:00.000-04:00",
    "modified_at": "2026-08-25T09:00:00.000-04:00",
    "content_status": "new",
    "is_carryover": false,
    "carryover_reason": null,
    "key_claims": [
      {
        "claim_id": "claim-mp-2026-08-25-027-001",
        "text": "Every one of 105 selected release transitions invalidated part of the prior repository skill set.",
        "source_ids": [
          "source-2026-08-25-016"
        ],
        "qualification": "Across 57 repositories, six frontier agents reached only 29.9 to 69.7 percent avg@3 macro F1 when asked to update V1 skills from official V1-to-V2 patches."
      }
    ],
    "source_ids": [
      "source-2026-08-25-016"
    ],
    "tags": [
      "repository skills",
      "software evolution",
      "maintenance"
    ],
    "image_url": null,
    "corrections": []
  },
  "sources": [
    {
      "source_id": "source-2026-08-25-016",
      "title": "arXiv preprint 2608.21964",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2608.21964",
      "canonical_url": "https://arxiv.org/abs/2608.21964",
      "source_type": "primary_research",
      "is_primary_source": true,
      "published_at": "2026-08-22T10:07:51.000-04:00",
      "accessed_at": "2026-08-25T08:17:00.000-04:00",
      "supports_claim_ids": [
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  ],
  "corrections": [],
  "publisher": {
    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
  },
  "cite_this_report": {
    "title": "The Repository Changed and the Skill Stayed Quiet",
    "publisher": "The Machine Press",
    "published_at": "2026-08-25T09:00:00.000-04:00",
    "canonical_url": "https://themachinepress.com/story/mp-2026-08-25-027/the-repository-changed-and-the-skill-stayed-quiet"
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