NOSTOS

by nostos.market · remote · no sign-in to list tools · v1.1.0 · published by market.nostos

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

Changes · 1

Compare Registry entry

14 tools: 1 change things and 13 only read.

Scanned Oct 21, 2026

Deletes or cancels0Claude Code: deny
Can't be undone0Claude Code: ask
Changes things1Claude Code: ask: see these tools
Only reads13Claude Code: allow: see these tools

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

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

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

14 tools

Changes things 1Creates or changes something that can be changed back.Claude Code: ask

check_availabilityReal-time status for up to 50 SKUs: available (online and in the shop), available-in-store-only, reserved, sold, or invalid.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Real-time status for up to 50 SKUs: available (online and in the shop), available-in-store-only, reserved, sold, or invalid. The live source of truth; the catalog can lag a recent sale.
Annotations the server declares
- title: Live availability
- readOnlyHint: true
- openWorldHint: false

Only reads 13Looks things up and changes nothing.Claude Code: allow

get_buying_policyWhat 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.No findings
Why it is in this group
- The name "get_buying_policy" says "get": a word for reading.
Description, as the server wrote it
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.
Annotations the server declares
- title: Buying policy
- readOnlyHint: true
- openWorldHint: false
get_condition_grading_rubricThe NOSTOS condition grading vocabulary and the criteria for each grade, with region-code meanings.No findings
Why it is in this group
- The name "get_condition_grading_rubric" says "get": a word for reading.
Description, as the server wrote it
The NOSTOS condition grading vocabulary and the criteria for each grade, with region-code meanings. Optionally filter to one department.
Annotations the server declares
- title: Condition grading rubric
- readOnlyHint: true
- openWorldHint: false
get_credit_policyHow NOSTOS store credit works: the 15% uplift over cash, how it's earned, where it's spent (in person at the Duluth shop), and how long it lasts.No findings
Why it is in this group
- The name "get_credit_policy" says "get": a word for reading.
Description, as the server wrote it
How NOSTOS store credit works: the 15% uplift over cash, how it's earned, where it's spent (in person at the Duluth shop), and how long it lasts.
Annotations the server declares
- title: Store credit policy
- readOnlyHint: true
- openWorldHint: false
get_itemFull details for one SKU: description, condition notes, price, region, image, a direct product URL, how to buy it (online or in the shop only), and real-time availability.No findings
Why it is in this group
- The name "get_item" says "get": a word for reading.
Description, as the server wrote it
Full details for one SKU: description, condition notes, price, region, image, a direct product URL, how to buy it (online or in the shop only), and real-time availability.
Annotations the server declares
- title: Item details
- readOnlyHint: true
- openWorldHint: false
get_return_policyThe NOSTOS return policy: 14 days from delivery; NOSTOS pays return shipping on misrepresented, non-working or transit-damaged items; change-of-mind returns accepted with the buyer…No findings
Why it is in this group
- The name "get_return_policy" says "get": a word for reading.
Description, as the server wrote it
The NOSTOS return policy: 14 days from delivery; NOSTOS pays return shipping on misrepresented, non-working or transit-damaged items; change-of-mind returns accepted with the buyer paying return shipping; refund timing.
Annotations the server declares
- title: Return policy
- readOnlyHint: true
- openWorldHint: false
get_shipping_estimateThe NOSTOS shipping policy for a destination country (US, Canada, or not-yet-active international): the US rates and free-shipping rule, Canada's flat rate, and the free prepaid tr…No findings
Why it is in this group
- The name "get_shipping_estimate" says "get": a word for reading.
Description, as the server wrote it
The NOSTOS shipping policy for a destination country (US, Canada, or not-yet-active international): the US rates and free-shipping rule, Canada's flat rate, and the free prepaid trade-in label. Policy, not a live carrier rate.
Annotations the server declares
- title: Shipping policy
- readOnlyHint: true
- openWorldHint: false
get_store_infoNOSTOS store information: address, hours, contact, mission, tagline, categories, area served, social links, and current online and storefront status.No findings
Why it is in this group
- The name "get_store_info" says "get": a word for reading.
Description, as the server wrote it
NOSTOS store information: address, hours, contact, mission, tagline, categories, area served, social links, and current online and storefront status.
Annotations the server declares
- title: Store info
- readOnlyHint: true
- openWorldHint: false
get_trade_in_offer_estimateCash and store-credit totals for up to 25 items someone wants to sell.No findings
Why it is in this group
- The name "get_trade_in_offer_estimate" says "get": a word for reading.
Description, as the server wrote it
Cash and store-credit totals for up to 25 items someone wants to sell. Name each item, its platform and its condition; NOSTOS prices every line itself, reports any it isn't buying, and says whether the free prepaid label applies and whether the basket goes to a personal review. An estimate that saves nothing.
Annotations the server declares
- title: Trade-in offer estimate
- readOnlyHint: true
- openWorldHint: false
list_departmentsList the store departments currently in stock (e.g.No findings
Why it is in this group
- The name "list_departments" says "list": a word for reading.
Description, as the server wrote it
List the store departments currently in stock (e.g. 'VG - Software', 'Apparel'), each with a count of available items.
Annotations the server declares
- title: Departments in stock
- readOnlyHint: true
- openWorldHint: false
list_platformsList the console platforms currently in stock, each with a count of available items.No findings
Why it is in this group
- The name "list_platforms" says "list": a word for reading.
Description, as the server wrote it
List the console platforms currently in stock, each with a count of available items.
Annotations the server declares
- title: Platforms in stock
- readOnlyHint: true
- openWorldHint: false
list_recent_dropsList the most recently added in-stock items, newest first.No findings
Why it is in this group
- The name "list_recent_drops" says "list": a word for reading.
Description, as the server wrote it
List the most recently added in-stock items, newest first. The answer to what's new at NOSTOS.
Annotations the server declares
- title: Recent drops
- readOnlyHint: true
- openWorldHint: false
lookup_market_priceWhat NOSTOS would pay for one game or console, in cash and in store credit, by condition (loose, CIB, box and game, new), from NOSTOS's own pricing engine.No findings
Why it is in this group
- The name "lookup_market_price" says "lookup": a word for reading.
Description, as the server wrote it
What NOSTOS would pay for one game or console, in cash and in store credit, by condition (loose, CIB, box and game, new), from NOSTOS's own pricing engine. Says when NOSTOS isn't buying a line, or prices it in person at the counter, and why. An estimate, not an offer.
Annotations the server declares
- title: What NOSTOS would pay
- readOnlyHint: true
- openWorldHint: false
search_inventorySearch the live NOSTOS catalog of retro games, consoles, and vintage apparel.No findings
Why it is in this group
- The name "search_inventory" says "search": a word for reading.
Description, as the server wrote it
Search the live NOSTOS catalog of retro games, consoles, and vintage apparel. Free-text query (accents optional) plus platform, department, region, condition, and price filters. Returns items for sale online and in the Duluth shop, title matches first; each says how to buy it (howToBuy). Every item is individually graded.
Annotations the server declares
- title: Search the catalog
- readOnlyHint: true
- openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.1.0. Values in angle brackets are yours to fill in.

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

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__nostos__search_inventory",
      "mcp__nostos__get_item",
      "mcp__nostos__list_platforms",
      "mcp__nostos__list_departments",
      "mcp__nostos__list_recent_drops",
      "mcp__nostos__get_store_info",
      "mcp__nostos__get_condition_grading_rubric",
      "mcp__nostos__get_buying_policy",
      "mcp__nostos__get_return_policy",
      "mcp__nostos__get_credit_policy",
      "mcp__nostos__get_shipping_estimate",
      "mcp__nostos__lookup_market_price",
      "mcp__nostos__get_trade_in_offer_estimate"
    ],
    "ask": [
      "mcp__nostos__check_availability"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as nostos. Review it before you use it.

Keep track

Get told when this server's tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/market.nostos/nostos/changes.xml

An Atom feed. Works in any feed reader or Slack's RSS app.

Anlyon alternative

1 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

Import an OpenAPI spec →

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Source: MCP Registry. Synced Oct 21, 2026, 18:53 UTC.

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