# NOSTOS (remote · mcp.nostos.market)

Retro games and vintage apparel in Duluth, GA. Live catalog, prices, trade-in offers, policies.

- Trust score: 68/100 (medium)
- Change this week: +16
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `mcp.nostos.market`: 68/100 (this document), [markdown](https://verifymcp.io/servers/market-nostos-nostos/mcp.md), [page](https://verifymcp.io/servers/market-nostos-nostos/mcp)
- remote · `mcp.nostos.market`: 61/100, [markdown](https://verifymcp.io/servers/market-nostos-nostos/mcp-2.md), [page](https://verifymcp.io/servers/market-nostos-nostos/mcp-2)

## Channel facts

- Endpoint: `https://mcp.nostos.market/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.1.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 57/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 14 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 81/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 1393 tokens (~99/item across 14 items; 14 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http market-nostos-nostos https://mcp.nostos.market/mcp
```

### Codex

```toml
[mcp_servers.market-nostos-nostos]
url = "https://mcp.nostos.market/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "market-nostos-nostos": {
      "type": "remote",
      "url": "https://mcp.nostos.market/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add market-nostos-nostos --url https://mcp.nostos.market/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  market-nostos-nostos:
    url: "https://mcp.nostos.market/mcp"
```

### Other

```json
{
  "mcpServers": {
    "market-nostos-nostos": {
      "type": "http",
      "url": "https://mcp.nostos.market/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-03 (score 68, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-02 (score 67, +10)

- [functional improvement] Schema quality: unverified → excellent

### 2026-08-01 (score 57, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-31 (score 56, +2)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 54, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-29 (score 54, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-28 (score 53, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-27 (score 52, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

## MCP tools (14)

### `search_inventory` (~245 tokens)

Search the catalog

Search the live NOSTOS catalog of retro games, consoles, and vintage apparel. Free-text query plus platform, department, region, condition, and price filters. Returns online-buyable items by default. Every item is unique and individually graded.

Input parameters:

- `condition` (string): Filter by exact condition, e.g. 'Loose', 'CIB', 'New'.
- `department` (string): Filter by department (substring), e.g. 'VG - Software', 'Apparel'.
- `includeSold` (boolean): Include sold and in-store-only items. Default false (online-buyable only).
- `limit` (integer): Max results to return. Default 20.
- `maxPrice` (number): Maximum price in USD.
- `minPrice` (number): Minimum price in USD.
- `platform` (string): Filter by platform (case-insensitive substring), e.g. 'Saturn', 'N64', 'Game Boy'.
- `query` (string): Free-text match across name, description, genre, and platform. All words must match.
- `region` (string): Filter by exact region code, e.g. 'JP', 'US', 'PAL'.

### `get_item` (~58 tokens)

Item details

Full details for one SKU: description, condition notes, price, region, image, and a direct product URL, plus real-time availability.

Input parameters:

- `sku` (string, required): The product SKU, e.g. 'NOST-VGS-0075'.

### `check_availability` (~84 tokens)

Live availability

Real-time status (available, reserved, sold, or invalid) for up to 50 SKUs at once. The live source of truth; the catalog can lag a recent sale.

Input parameters:

- `skus` (array, required): SKUs to check, up to 50, e.g. ['NOST-VGS-0075','NOST-VGS-0076'].

### `list_platforms` (~25 tokens)

Platforms in stock

List the console platforms currently in stock, each with a count of available items.

### `list_departments` (~40 tokens)

Departments in stock

List the store departments currently in stock (e.g. 'VG - Software', 'CLTH - Vintage Apparel'), each with a count of available items.

### `list_recent_drops` (~48 tokens)

Recent drops

List the most recently added in-stock items, newest first. The answer to what is new at NOSTOS.

Input parameters:

- `limit` (integer): Max items to return. Default 10.

### `get_store_info` (~40 tokens)

Store info

NOSTOS store information: address, hours, contact, mission, tagline, categories, area served, social links, and current online and storefront status.

### `get_condition_grading_rubric` (~71 tokens)

Condition grading rubric

The NOSTOS condition grading vocabulary and the criteria for each grade, with region-code meanings. Optionally filter to one department.

Input parameters:

- `department` (string): Optional department filter, e.g. 'VG - Software', 'CLTH - Vintage Apparel'. Omit for the full rubric.

### `get_buying_policy` (~45 tokens)

Buying policy

What NOSTOS buys and declines, how cash and store-credit offers are calculated, bounty premiums, basket caps, the free shipping label threshold, and the trade-in process.

### `get_return_policy` (~43 tokens)

Return policy

The NOSTOS return policy: 14-day window, eligible reasons, free return shipping on valid claims, refund timing, and the 110% store-credit option.

### `get_credit_policy` (~39 tokens)

Store credit policy

How NOSTOS store credit works: the 15% uplift over cash, the in-store drop-off bonus, the return bonus, and redemption.

### `get_shipping_estimate` (~93 tokens)

Shipping policy

The NOSTOS shipping policy for a destination country (US, Canada, or not-yet-active international), including the free prepaid trade-in label threshold. Policy, not a live carrier rate.

Input parameters:

- `destination_country` (string, required): ISO-3166-1 alpha-2 destination country code, e.g. 'US', 'CA'.
- `item_count` (integer): Number of items. Default 1.

### `lookup_market_price` (~105 tokens)

Market price lookup

Estimated market value (loose, CIB, and new) for a game or console from current PriceCharting guide data, plus the NOSTOS cash and store-credit buy offers.

Input parameters:

- `condition` (string): Optional condition to focus the result on.
- `name` (string, required): Title to look up, e.g. 'Mario Kart 64'.
- `platform` (string): Platform hint to disambiguate, e.g. 'N64', 'Saturn'.

### `get_trade_in_offer_estimate` (~78 tokens)

Trade-in offer estimate

Cash and store-credit totals for a basket of items to sell, with free-shipping eligibility and whether the basket routes to a personal review. Persists nothing. Provide each item's buyPrice from lookup_market_price.

Input parameters:

- `items` (array, required): Basket of items to sell. Use lookup_market_price to get each item's buyPrice first.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/market-nostos-nostos/mcp#diagnostics

## Score history

- 2026-08-03: 68
- 2026-08-02: 67
- 2026-08-01: 57
- 2026-07-31: 56
- 2026-07-30: 54
- 2026-07-29: 54
- 2026-07-28: 53
- 2026-07-27: 52
- 2026-07-26: 52

## Links

- Remote endpoint: https://mcp.nostos.market/mcp
- Website: https://nostos.market/
- Changelog RSS feed: https://verifymcp.io/servers/market-nostos-nostos/mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/market-nostos-nostos/mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/market-nostos-nostos/mcp