# HORIZON SHIELD — AI Connector

Fair-price check on Japanese construction quotes. HORIZON SHIELD is listed under Other in the ChatGPT apps directory, built by The HORIZONs Inc..

Source: https://node8.ai/ai-connectors/other/horizon-shield/

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[AI Connectors](https://node8.ai/ai-connectors/) · [Other](https://node8.ai/ai-connectors/other/)

# HORIZON SHIELD

Fair-price check on Japanese construction quotes

Listed in ChatGPT

[ChatGPT listing](https://chatgpt.com/plugins/horizon-shield?open_in_app) [shield.the-horizons-innovation.com](https://shield.the-horizons-innovation.com)

Overview

## What HORIZON SHIELD does

HORIZON SHIELD assesses whether a quoted price for construction or renovation work in Japan is reasonable. The inputs are a work type and the amount quoted. The app then places that figure against expected price ranges, marks where the risk of overcharging lies, and breaks down the unit prices behind the total.

It also scans the wording of an estimate for the sort of pressure tactics that turn up in sales pitches.

Two sources sit behind the price ranges. One is JCCDB, a construction-cost dataset published openly, which the record puts at 65,729 line items sorted into 398 categories. The other is three decades of on-site building experience, which the developer describes as the basis for how the ranges were curated.

### Who it is for

A homeowner or property manager in Japan holding a construction or renovation quote and wanting a second opinion on the number.

### What stands out

Alongside the price comparison it looks for high-pressure sales language in the quote itself, which is a separate question from whether the arithmetic is fair.

Availability

## Where HORIZON SHIELD is listed

HORIZON SHIELD is listed in the ChatGPT apps directory only. The HORIZONs Inc. has no connector under the same domain in the Claude directory; 392 of the 3,150 products here are on both marketplaces, and this is not one of them.

ChatGPT apps are built on MCP, and the same server can back a Claude connector, so the absence is a distribution decision rather than a technical one.

ChatGPT listing

## In the ChatGPT apps directory

Developer

The HORIZONs Inc.

Filed under

Other

Listed since

June 2026

Authentication

Authenticates when installed

Website

[shield.the-horizons-innovation.com](https://shield.the-horizons-innovation.com)

Policies published

Privacy policy · Terms of service

Official listing

[Open in ChatGPT](https://chatgpt.com/plugins/horizon-shield?open_in_app)

Snapshot

August 2026

Nearby

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[All 351 Other connectors](https://node8.ai/ai-connectors/other/)

This is an independent catalogue entry compiled by Node8 from HORIZON SHIELD's public marketplace listing as it stood in August 2026. Listing facts come from the marketplaces; the comparisons against the rest of the directory and any live-endpoint measurements are Node8's. Node8 is not affiliated with The HORIZONs Inc., and inclusion here is not an endorsement.

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