# GoBuy Product Trust

> Marketplace-evidence trust scores for AI agents: a 0-100 Evidence Score with signal breakdown.

- name: io.github.digitalmentes7-maker/gobuy-product-trust
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 74/100 flags: no-repository
- quality: 75/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.digitalmentes7-maker%2Fgobuy-product-trust
- tools: https://api.protogrid.dev/v1/servers/io.github.digitalmentes7-maker%2Fgobuy-product-trust/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "gobuy-product-trust": {
      "type": "http",
      "url": "https://mcp.gobuy.ai/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 100
- freshness: 85
- provenance: 35
- drivers: +reachable +uptime-100% ~updated-41d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 75/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 5 of 5 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 1,384 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 25 (weight 15)

- warn `stability.changes`: 12 tool changes in 30 days
- fail `stability.rug_pull`: 5 tools kept their name but changed most of their description in 30 days; review before trusting them

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 5, about 1,384 tokens to load them all
- tool set hash: 0326970e6bddd5a245b3c0bb8972cc6d
- tools last changed: 2026-10-14T13:16:48.691Z
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.digitalmentes7-maker/gobuy-product-trust.svg)](https://protogrid.dev/servers/io.github.digitalmentes7-maker/gobuy-product-trust)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-14 `scan_store` changed (title, description, annotations) **meaning changed**
  - before: Score any online store live with a fresh crawl (~20 seconds). Use when check_store_score returns 404. Docs: https://docs-gobuy.pages.dev
  - after: Score any online store live with a fresh crawl (~20 seconds). Use when `check_store_score` returns 404 or a fresh scan is explicitly requested. Use `check_store_score` instead to retrieve an existing result without crawling. Requires a full HTTP(S) URL and updates the stored store score; repeated calls can trigger new scans. For marketplace product evidence, use `check_product_trust` instead. Docs: https://docs-gobuy.pages.dev
- 2026-10-14 `check_store_score` changed (title, description, annotations) **meaning changed**
  - before: Get the GoBuy Score for an independent store or Shopify storefront — what AI shopping agents see when they visit: agent-readiness, trust signals, structured data, review system.
  - after: Retrieve a previously scored independent store or Shopify storefront by domain: agent-readiness, trust signals, structured data, and review system. Use this first for an existing store score; it is read-only and does not crawl. If not scored yet, use `scan_store` for an explicit fresh scan. For a retailer product listing rather than a storefront, use `check_product_trust`.
- 2026-10-14 `analyze_reviews` changed (title, description, inputSchema, annotations) **meaning changed**
  - before: Analyzes up to 100 recent reviews (~30-90 seconds). Bright Data can take longer. On-demand Amazon sampling without your cookie; reviews are sorted within the returned sample, but the provider does not guarantee the listing's newest 100. Cached for seven days. Heuristics do not prove authenticity.
  - after: Analyzes up to 100 recent reviews (~30-90 seconds). Bright Data can take longer. Use only when Amazon review-sample analysis is explicitly requested; use `check_product_trust` for an existing evidence score or `compare_products` to rank listings. On-demand sampling without your cookie; reviews are sorted within the returned sample, but the provider does not guarantee the listing's newest 100. May trigger paid Bright Data collection and writes a seven-day analysis cache. force_refresh bypasses that cache and may start another paid scrape. A later explicit call without force_refresh resumes a pending job without a new scrape. Heuristics do not prove authenticity.
- 2026-10-14 `compare_products` changed (title, description, inputSchema, annotations) **meaning changed**
  - before: Compare 2–20 retailer listings and rank them by marketplace-evidence score. This is not purchase advice.
  - after: Fetch Evidence Scores for 2-20 retailer listings and rank them by GoBuy Evidence Score (highest first). Use this when an agent is choosing between multiple products. For a single product lookup, use `check_product_trust` instead. Read-only — does not modify any state or place orders, and never fetches reviews. Unindexed products rank last. This is not purchase advice.
- 2026-10-14 `check_product_trust` changed (title, description, inputSchema, annotations) **meaning changed**
  - before: Return the indexed 0–100 marketplace-evidence score and complete available signal breakdown for one retailer listing.
  - after: Return the GoBuy Evidence Score (0-100) and complete signal breakdown for a single retailer listing on Amazon, Walmart, Target, or Best Buy. This is the GPV-1 gate evaluator: score >= 55 PASS, 35-54 FLAG, < 35 or not-indexed BLOCK. The returned verdict is an evidence tier (strong/moderate/weak), not a computed GPV-1 checkout decision. Use this for individual product lookups. To compare and rank multiple products, use `compare_products` instead. Use `analyze_reviews` only for explicitly requested Amazon review-sample analysis; this lookup never fetches reviews. Read-only — does not modify any state or place orders. Scores describe available marketplace records, not product quality or purchase recommendations.
- 2026-09-29 `analyze_reviews` added
  - Analyzes up to 100 recent reviews (~30-90 seconds). Bright Data can take longer. On-demand Amazon sampling without your cookie; reviews are sorted within the returned sample, but the provider does not guarantee the listing's newest 100. Cached for seven days. Heuristics do not prove authenticity.
- 2026-09-29 `scan_store` changed (description, annotations)
  - before: Score any online store live with a fresh crawl (~20 seconds). Use when check_store_score returns 404.
  - after: Score any online store live with a fresh crawl (~20 seconds). Use when check_store_score returns 404. Docs: https://docs-gobuy.pages.dev
- 2026-09-29 `check_store_score` changed (annotations)
- 2026-09-29 `compare_products` changed (annotations)
- 2026-09-29 `check_product_trust` changed (annotations)

Full history: https://api.protogrid.dev/v1/servers/io.github.digitalmentes7-maker%2Fgobuy-product-trust/changes

## Remotes

- https://mcp.gobuy.ai/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (5)

- `analyze_reviews`: Analyzes up to 100 recent reviews (~30-90 seconds). Bright Data can take longer. Use only when Amazon review-sample analysis is explicitly requested; use `check_product_trust` for an existing evidence score or `compare_products` to rank listings. On-demand sampling without your cookie; reviews are sorted within the returned sample, but the provider does not guarantee the listing's newest 100. May trigger paid Bright Data collection and writes a seven-day analysis cache. force_refresh bypasses that cache and may start another paid scrape. A later explicit call without force_refresh resumes a pending job without a new scrape. Heuristics do not prove authenticity.
- `check_product_trust`: Return the GoBuy Evidence Score (0-100) and complete signal breakdown for a single retailer listing on Amazon, Walmart, Target, or Best Buy. This is the GPV-1 gate evaluator: score >= 55 PASS, 35-54 FLAG, < 35 or not-indexed BLOCK. The returned verdict is an evidence tier (strong/moderate/weak), not a computed GPV-1 checkout decision. Use this for individual product lookups. To compare and rank multiple products, use `compare_products` instead. Use `analyze_reviews` only for explicitly requested Amazon review-sample analysis; this lookup never fetches reviews. Read-only — does not modify any state or place orders. Scores describe available marketplace records, not product quality or purchase recommendations.
- `check_store_score`: Retrieve a previously scored independent store or Shopify storefront by domain: agent-readiness, trust signals, structured data, and review system. Use this first for an existing store score; it is read-only and does not crawl. If not scored yet, use `scan_store` for an explicit fresh scan. For a retailer product listing rather than a storefront, use `check_product_trust`.
- `compare_products`: Fetch Evidence Scores for 2-20 retailer listings and rank them by GoBuy Evidence Score (highest first). Use this when an agent is choosing between multiple products. For a single product lookup, use `check_product_trust` instead. Read-only — does not modify any state or place orders, and never fetches reviews. Unindexed products rank last. This is not purchase advice.
- `scan_store`: Score any online store live with a fresh crawl (~20 seconds). Use when `check_store_score` returns 404 or a fresh scan is explicitly requested. Use `check_store_score` instead to retrieve an existing result without crawling. Requires a full HTTP(S) URL and updates the stored store score; repeated calls can trigger new scans. For marketplace product evidence, use `check_product_trust` instead. Docs: https://docs-gobuy.pages.dev