{
  "total": 2,
  "source": "d1",
  "tracking_since": "2026-10-25T12:38:37.716Z",
  "source_rechecks": {
    "rows": 332,
    "series": 250,
    "last_checked_at": "2026-10-25T13:38:37.000Z",
    "latest_result_counts": {
      "confirmed": 240,
      "unreachable": 5,
      "needs_review": 4,
      "changed": 1
    },
    "method": "Each source URL is fetched and the recorded numbers are looked for in the page (PDFs via pdftotext); anything not confirmed is reviewed by a human. Log: /downloads/price_rechecks.jsonl"
  },
  "observations": [
    {
      "id": "po_20261025_b3724b4a732c",
      "series_key": "ps_cc6714748e203d38",
      "kind": "provider_published",
      "use_case_id": "chimney-sweep-robot",
      "use_case_ids": [
        "chimney-sweep-robot"
      ],
      "provider_id": "wohler",
      "description": "Wöhler Rotary Viper Duct M10, 16 ft, with 7-inch brush head (drill-driven rotary cleaning; drill not included)",
      "low": 434,
      "high": null,
      "currency": "USD",
      "unit": "per unit",
      "region": "",
      "source_url": "https://www.wohlerusa.com/shop/products/cleaning-tools",
      "as_of": "2026-10",
      "observed_at": "2026-10-25T13:36:18.866Z",
      "content_hash": "sha256:b3724b4a732c3099a5f875284c2cf47d6878d9a1172ff91755b9908b08e9912e",
      "supersedes": null,
      "origin": "build",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 434,
        "high": null,
        "note": "Already in target currency; no conversion."
      }
    },
    {
      "id": "po_20261025_ebb0db57c7ac",
      "series_key": "ps_fe164740b2d857cc",
      "kind": "benchmark",
      "use_case_id": "chimney-sweep-robot",
      "use_case_ids": [
        "chimney-sweep-robot"
      ],
      "provider_id": null,
      "description": "Buy: Wöhler Rotary Viper Duct M10 rotary cleaning kit, 16 ft with 7-inch brush (US list price; drill not included)",
      "low": 434,
      "high": null,
      "currency": "USD",
      "unit": "per unit",
      "region": "US",
      "source_url": "https://www.wohlerusa.com/shop/products/cleaning-tools",
      "as_of": "2026-10",
      "observed_at": "2026-10-25T13:36:18.866Z",
      "content_hash": "sha256:ebb0db57c7ac6eff28a24f1b491e161cfe8241198bebd6d8cf1f31ea48b7bcaa",
      "supersedes": null,
      "origin": "build",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 434,
        "high": null,
        "note": "Already in target currency; no conversion."
      }
    }
  ],
  "series": [
    {
      "series_key": "ps_cc6714748e203d38",
      "kind": "provider_published",
      "use_case_id": "chimney-sweep-robot",
      "provider_id": "wohler",
      "description": "Wöhler Rotary Viper Duct M10, 16 ft, with 7-inch brush head (drill-driven rotary cleaning; drill not included)",
      "currency": "USD",
      "unit": "per unit",
      "region": "",
      "source_url": "https://www.wohlerusa.com/shop/products/cleaning-tools",
      "observations": 1,
      "first_observed_at": "2026-10-25T13:36:18.866Z",
      "last_observed_at": "2026-10-25T13:36:18.866Z",
      "current": true,
      "latest": {
        "low": 434,
        "high": null,
        "as_of": "2026-10",
        "id": "po_20261025_b3724b4a732c"
      },
      "trend": null,
      "last_rechecked": null
    },
    {
      "series_key": "ps_fe164740b2d857cc",
      "kind": "benchmark",
      "use_case_id": "chimney-sweep-robot",
      "provider_id": null,
      "description": "Buy: Wöhler Rotary Viper Duct M10 rotary cleaning kit, 16 ft with 7-inch brush (US list price; drill not included)",
      "currency": "USD",
      "unit": "per unit",
      "region": "US",
      "source_url": "https://www.wohlerusa.com/shop/products/cleaning-tools",
      "observations": 1,
      "first_observed_at": "2026-10-25T13:36:18.866Z",
      "last_observed_at": "2026-10-25T13:36:18.866Z",
      "current": true,
      "latest": {
        "low": 434,
        "high": null,
        "as_of": "2026-10",
        "id": "po_20261025_ebb0db57c7ac"
      },
      "trend": null,
      "last_rechecked": null
    }
  ],
  "note": "Only one observation per series so far: we started recording every price on 2026-10-25 and re-check every source on a schedule. A trend appears when a re-checked source shows a different price (we never overwrite old observations).",
  "pagination": {
    "total": 2,
    "limit": 200,
    "offset": 0,
    "returned": 2,
    "next_offset": null,
    "next": null,
    "prev": null
  },
  "license": "Whirrwork (https://whirrwork.com), CC BY 4.0"
}