← HORIZON SHIELDCONTENT HISTORY

Update to HORIZON SHIELD

Snapshot Oct 24, 2026 · 13:10 UTC · version 2.1.3

WHAT CHANGED

Declared capabilities changed

Declared skills — Now says: [{"description":"Audit whether a Japanese construction or renovation estimate is fair. Use when the user shares a construction or renovation quote, asks...

Observed in instructions or declared skills. Runtime behavior has not been tested.

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Declared skills

Before

Sep 30, 2026 · 23:00 UTC

[]

After

Oct 24, 2026 · 13:10 UTC

[{"description":"Audit whether a Japanese construction or renovation estimate is fair. Use when the user shares a construction or renovation quote, asks whether a price for work like exterior painting (外壁塗装), roof work, a bathroom remode...

Full description

Before

Sep 30, 2026 · 23:00 UTC

HORIZON SHIELD checks whether a Japanese construction or renovation estimate is fair. Give it a work type and a quoted price, and it compares the amount against fair-price ranges curated from 30 years of on-site construction experience, ...

After

Oct 24, 2026 · 13:10 UTC

Checks whether a Japanese construction or renovation estimate is fair. Give it a work type and a quoted price in JPY and it returns the typical range, a verdict (ok, watch, alert, or ambiguous when candidates disagree), known overcharge ...

Long description

Before

Sep 30, 2026 · 23:00 UTC

price, and it compares the amount against fair-price ranges curated from 30 years of on-site construction experience, flags overcharge risk, and explains unit prices. It also detects common high-pressure sales phrases. Backed by JCCDB, a...

After

Oct 24, 2026 · 13:10 UTC

price in JPY and it returns the typical price range, a verdict on the quote (ok, watch or alert, or ambiguous when candidates disagree), known overcharge and high-pressure sales tactics in the wording of an estimate or sales pitch, and c...

Version

Before

Sep 30, 2026 · 23:00 UTC

2.0.0

After

Oct 24, 2026 · 13:10 UTC

2.1.3

Compare saved observations

Download comparison JSON
Full technical diff · 19 changed fields

added /is_template_instance

BEFORE
Field was absent
AFTER
false

removed /release/app_manifest/apps/app-6a261701cf6c81918e4239980517ff3b

BEFORE
{
  "id": "asdk_app_6a261701cf6c81918e4239980517ff3b",
  "required": true
}
AFTER
Field is absent

added /release/app_manifest/apps/horizon-shield

BEFORE
Field was absent
AFTER
{
  "id": "asdk_app_6a261701cf6c81918e4239980517ff3b",
  "required": true
}

changed /release/description

BEFORE
"HORIZON SHIELD checks whether a Japanese construction or renovation estimate is fair. Give it a work type and a quoted price, and it compares the amount against fair-price ranges curated from 30 years of on-site construction experience, flags overcharge risk, and explains unit prices. It also detects common high-pressure sales phrases. Backed by JCCDB, an open construction-cost dataset of 65,729 items across 63 categories."
AFTER
"Checks whether a Japanese construction or renovation estimate is fair. Give it a work type and a quoted price in JPY and it returns the typical range, a verdict (ok, watch, alert, or ambiguous when candidates disagree), known overcharge and high-pressure sales tactics in the wording, and contractors in Japan that passed the same independent check. Every fair-price verdict carries a SHA-256 hash anyone can recompute, and price ranges come with the source row ids and formula. Built on JCCDB, an open construction-cost dataset (v5.1, 526,128 records, CC BY 4.0). Two tools append a public ledger record; the rest read."

changed /release/id

BEFORE
"pluginrel_246e52ac5ea08191bb0d6583d41b2c87"
AFTER
"pluginrel_85c6306b79bc8191860f26c847970dbd"

changed /release/interface/category

BEFORE
"Other"
AFTER
"Data & Analytics"

changed /release/interface/composer_icon_dark_url

BEFORE
"https://files.openai.com/content?id=file_00000000bae47209b4da8530fcf3ac36"
AFTER
null

changed /release/interface/composer_icon_url

BEFORE
"https://files.openai.com/content?id=file_00000000bae47209b4da8530fcf3ac36"
AFTER
null

changed /release/interface/default_prompt

BEFORE
null
AFTER
"Is 1.2 million yen fair for exterior wall painting on a 30 tsubo house in Kanagawa?"

changed /release/interface/default_prompts

BEFORE
null
AFTER
[
  "Is 1.2 million yen fair for exterior wall painting on a 30 tsubo house in Kanagawa?",
  "この見積もりの「一式」と「本日限りの値引き」は大丈夫?",
  "Find a verified roofing contractor in Hiratsuka."
]

changed /release/interface/developer_name

BEFORE
"The HORIZONs Inc."
AFTER
"The HORIZONs Co., Ltd."

changed /release/interface/logo_url

BEFORE
"https://files.openai.com/content?id=file_00000000afb081f7a5e385f87bdc1087"
AFTER
"https://files.openai.com/content?id=file_00000000a2f08206b21c56af1a4863e2"

changed /release/interface/logo_url_dark

BEFORE
"https://files.openai.com/content?id=file_00000000ecc472069f38c4cd6080f9d1"
AFTER
null

changed /release/interface/long_description

BEFORE
"HORIZON SHIELD checks whether a Japanese construction or renovation estimate is fair. Give it a work type and a quoted price, and it compares the amount against fair-price ranges curated from 30 years of on-site construction experience, flags overcharge risk, and explains unit prices. It also detects common high-pressure sales phrases. Backed by JCCDB, an open construction-cost dataset of 65,729 items across 63 categories."
AFTER
"HORIZON SHIELD checks whether a Japanese construction or renovation estimate is fair. Give it a work type and a quoted price in JPY and it returns the typical price range, a verdict on the quote (ok, watch or alert, or ambiguous when candidates disagree), known overcharge and high-pressure sales tactics in the wording of an estimate or sales pitch, and contractors in Japan that passed the same independent check.\n\nEvery fair-price verdict carries a SHA-256 hash that anyone can recompute, and price ranges come with the source row ids and the formula. The ranges are built on JCCDB, an open construction-cost dataset (v5.1, 526,128 records, CC BY 4.0) curated by Toshikatsu Oga from thirty years of site experience.\n\nIntended for homeowners and the people helping them read a quote. Limits: fair-price verdicts cover Japan only, in JPY; work names match best in Japanese; a verdict is a reference range for the homeowner to act on and does not declare a contractor dishonest. Two tools (verify_fair_price and create_ap2_fairness_attestation) append a record to a public ledger; every other tool only reads. Detailed public cost data for Japan and the U.S. is served by a separate server, HORIZON SHIELD Construction Cost Data."

changed /release/interface/plugin_category_id

BEFORE
"other"
AFTER
"data & analytics"

changed /release/keywords

BEFORE
[]
AFTER
[
  "construction",
  "renovation",
  "estimate",
  "japan",
  "fair-price",
  "verifiable",
  "contractor",
  "open-data"
]

changed /release/mcp_servers

BEFORE
[]
AFTER
[
  {
    "key": "horizon-shield",
    "metadata": {
      "type": "http",
      "url": "https://hs-mcp.oga-surf-project.workers.dev"
    }
  }
]

changed /release/skills

BEFORE
[]
AFTER
[
  {
    "description": "Audit whether a Japanese construction or renovation estimate is fair. Use when the user shares a construction or renovation quote, asks whether a price for work like exterior painting (外壁塗装), roof work, a bathroom remodel or a water heater is reasonable, asks 相場 / 適正価格 / この見積もりは高いか, wants overcharge red flags checked in an estimate or sales pitch, wants an independently verifiable fair-price receipt, or asks who to hire in Japan.",
    "interface": {
      "brand_color": null,
      "default_prompt": null,
      "display_name": "horizon-shield",
      "icon_large_url": null,
      "icon_small_url": null,
      "iconography": "chart",
      "short_description": "Audit whether a Japanese construction or renovation estimate is fair. Use when the user shares a construction or renovation quote, asks whether a price for work like exterior painting (外壁塗装), roof work, a bathroom remodel or a water heater is reasonable, asks 相場 / 適正価格 / この見積もりは高いか, wants overcharge red flags checked in an estimate or sales pitch, wants an independently verifiable fair-price receipt, or asks who to hire in Japan."
    },
    "name": "horizon-shield",
    "plugin_release_skill_id": "pluginrsk_6ad1613cf9048191800dec60e18dae94"
  }
]

changed /release/version

BEFORE
"2.0.0"
AFTER
"2.1.3"
Full snapshot data
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  "created_at": "2026-06-23T03:36:43.394477Z",
  "discoverability": "LISTED",
  "id": "plugin_asdk_app_6a261701cf6c81918e4239980517ff3b",
  "is_template": false,
  "is_template_instance": false,
  "name": "app-6a261701cf6c81918e4239980517ff3b",
  "release": {
    "app_ids": [
      "asdk_app_6a261701cf6c81918e4239980517ff3b"
    ],
    "app_manifest": {
      "apps": {
        "horizon-shield": {
          "id": "asdk_app_6a261701cf6c81918e4239980517ff3b",
          "required": true
        }
      }
    },
    "app_templates": [],
    "description": "Checks whether a Japanese construction or renovation estimate is fair. Give it a work type and a quoted price in JPY and it returns the typical range, a verdict (ok, watch, alert, or ambiguous when candidates disagree), known overcharge and high-pressure sales tactics in the wording, and contractors in Japan that passed the same independent check. Every fair-price verdict carries a SHA-256 hash anyone can recompute, and price ranges come with the source row ids and formula. Built on JCCDB, an open construction-cost dataset (v5.1, 526,128 records, CC BY 4.0). Two tools append a public ledger record; the rest read.",
    "display_name": "HORIZON SHIELD",
    "id": "pluginrel_85c6306b79bc8191860f26c847970dbd",
    "interface": {
      "brand_color": null,
      "capabilities": [],
      "category": "Data & Analytics",
      "composer_icon_dark_url": null,
      "composer_icon_url": null,
      "default_prompt": "Is 1.2 million yen fair for exterior wall painting on a 30 tsubo house in Kanagawa?",
      "default_prompts": [
        "Is 1.2 million yen fair for exterior wall painting on a 30 tsubo house in Kanagawa?",
        "この見積もりの「一式」と「本日限りの値引き」は大丈夫?",
        "Find a verified roofing contractor in Hiratsuka."
      ],
      "developer_name": "The HORIZONs Co., Ltd.",
      "logo_url": "https://files.openai.com/content?id=file_00000000a2f08206b21c56af1a4863e2",
      "logo_url_dark": null,
      "long_description": "HORIZON SHIELD checks whether a Japanese construction or renovation estimate is fair. Give it a work type and a quoted price in JPY and it returns the typical price range, a verdict on the quote (ok, watch or alert, or ambiguous when candidates disagree), known overcharge and high-pressure sales tactics in the wording of an estimate or sales pitch, and contractors in Japan that passed the same independent check.\n\nEvery fair-price verdict carries a SHA-256 hash that anyone can recompute, and price ranges come with the source row ids and the formula. The ranges are built on JCCDB, an open construction-cost dataset (v5.1, 526,128 records, CC BY 4.0) curated by Toshikatsu Oga from thirty years of site experience.\n\nIntended for homeowners and the people helping them read a quote. Limits: fair-price verdicts cover Japan only, in JPY; work names match best in Japanese; a verdict is a reference range for the homeowner to act on and does not declare a contractor dishonest. Two tools (verify_fair_price and create_ap2_fairness_attestation) append a record to a public ledger; every other tool only reads. Detailed public cost data for Japan and the U.S. is served by a separate server, HORIZON SHIELD Construction Cost Data.",
      "plugin_category_id": "data & analytics",
      "privacy_policy_url": "https://shield.the-horizons-innovation.com/privacy",
      "screenshot_urls": [],
      "short_description": "Check Japan reform estimates",
      "terms_of_service_url": "https://shield.the-horizons-innovation.com/tos",
      "website_url": "https://shield.the-horizons-innovation.com"
    },
    "keywords": [
      "construction",
      "renovation",
      "estimate",
      "japan",
      "fair-price",
      "verifiable",
      "contractor",
      "open-data"
    ],
    "mcp_servers": [
      {
        "key": "horizon-shield",
        "metadata": {
          "type": "http",
          "url": "https://hs-mcp.oga-surf-project.workers.dev"
        }
      }
    ],
    "onboarding_skill_name": null,
    "requires_local_executor": false,
    "skills": [
      {
        "description": "Audit whether a Japanese construction or renovation estimate is fair. Use when the user shares a construction or renovation quote, asks whether a price for work like exterior painting (外壁塗装), roof work, a bathroom remodel or a water heater is reasonable, asks 相場 / 適正価格 / この見積もりは高いか, wants overcharge red flags checked in an estimate or sales pitch, wants an independently verifiable fair-price receipt, or asks who to hire in Japan.",
        "interface": {
          "brand_color": null,
          "default_prompt": null,
          "display_name": "horizon-shield",
          "icon_large_url": null,
          "icon_small_url": null,
          "iconography": "chart",
          "short_description": "Audit whether a Japanese construction or renovation estimate is fair. Use when the user shares a construction or renovation quote, asks whether a price for work like exterior painting (外壁塗装), roof work, a bathroom remodel or a water heater is reasonable, asks 相場 / 適正価格 / この見積もりは高いか, wants overcharge red flags checked in an estimate or sales pitch, wants an independently verifiable fair-price receipt, or asks who to hire in Japan."
        },
        "name": "horizon-shield",
        "plugin_release_skill_id": "pluginrsk_6ad1613cf9048191800dec60e18dae94"
      }
    ],
    "version": "2.1.3"
  },
  "scope": "GLOBAL",
  "share_url": "https://chatgpt.com/plugins/horizon-shield?open_in_app",
  "status": "ENABLED"
}

SHA-256 of public snapshot: 9ea5aa5b420237e630185f1afac3084e7357744ff80fdb6ba48f7c42494717df