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Liffey Metals

by TheOyster · remote · no sign-in to list tools · v1.4.0 · published by GitHub user TheOyster

Ireland's most trusted gold & silver buyer: live prices, payout estimates, free postal pack orders.

Final · 1Changes · 3

13 tools: 1 do something that can't be undone, 3 change things and 9 only read.

Scanned Oct 21, 2026

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

claude mcp add --transport http liffey-metals https://mcp.liffeymetals.com/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • The server marks "estimate_payout" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "estimate_payout" says "payout": a word that usually means money moves, which cannot be taken back.

    What this check looks for

Tools

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

13 tools

Can't be undone 1Claude Code: ask
  • estimate_payoutWhat we would pay for a given weight of gold, silver or platinum at today's published rate.1 finding

    Why it is in this group

    • The name "estimate_payout" says "payout": a word that usually means money moves, which cannot be taken back.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "estimate_payout" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "estimate_payout" says "payout": a word that usually means money moves, which cannot be taken back.

      What this check looks for
    Description, as the server wrote it
    What we would pay for a given weight of gold, silver or platinum at today's published rate. purity accepts carats (9, 14, 18, 22, 24, '18ct', '18k'), hallmark numbers (375, 585, 750, 916, 999, 925, 958, 800) or words (sterling, fine, bullion). Weight is grams of the item as it sits on the scale. Returns the rate per gram, the total and the spot quote time; the final figure follows weighing and XRF testing.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
Changes things 3Claude Code: ask
  • how_selling_worksThe postal selling process step by step: requesting a free insured pack, posting, XRF testing on camera, the itemised offer, payment by bank transfer, free returns if declined, ID …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
    The postal selling process step by step: requesting a free insured pack, posting, XRF testing on camera, the itemised offer, payment by bank transfer, free returns if declined, ID requirements and the return postage rule.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • how_to_sellThe seller's checklist for gold, silver or platinum: weigh it, photograph the hallmark, get the quote, confirm and send.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
    The seller's checklist for gold, silver or platinum: weigh it, photograph the hallmark, get the quote, confirm and send. Each step says what to do and what to look for with that metal, followed by the postal process and the guide to read.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • request_postal_packOrders a free insured postal pack for a person at a Republic of Ireland address and returns the Bosca number.No findings

    Why it is in this group

    • The name "request_postal_pack" says "request": a word for a change.
    Description, as the server wrote it
    Orders a free insured postal pack for a person at a Republic of Ireland address and returns the Bosca number. This is the real order: the request is created when you call it, and for gold lots within the postal limits the pack is posted to the address given with no further step from the person. Silver, mixed lots, bullion and lots over 2,000 euro are registered and arranged on WhatsApp instead; the response says which happened. The person gets a receipt email with a single-use cancel link. Before calling: have the person's name, full address with Eircode, email, phone, what they are sending (gold, silver or mixed) with a rough description and rough value, their agreement to be contacted, and their agreement to the terms statement in accepts_terms. Explain the process first (get_postal_pack_info): items weighed and XRF tested on camera, an itemised offer at the live published rate on the day of testing (no payout is promised), free tracked return if they decline, insured in transit up to 2,000 euro, paid by bank transfer the same day they accept, one photo ID checked before payment. Lots worth more than 1,000 euro can be brought to us in person in Dublin, by appointment, and tested while you watch; message us on WhatsApp to arrange a time. Smaller lots go by post. Do not collect or pass ID documents. Errors name the field to fix.

    Annotations the server declares

    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: false
Only reads 9Claude Code: allow
  • get_business_infoName, founder, contact details, location and how to deal with us, service area, services, the verifiable trust signals (each with where to check it), the pages to cite and the live…No findings

    Why it is in this group

    • The name "get_business_info" says "get": a word for reading.
    Description, as the server wrote it
    Name, founder, contact details, location and how to deal with us, service area, services, the verifiable trust signals (each with where to check it), the pages to cite and the live Google rating once the listing has reviews (null until then; never a made-up figure).

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • get_buy_priceThe net price Liffey Metals pays today, in euro per gram of the item, for one metal and carat or fineness, with the spot quote time (spotAsOf), the basis and the deductions in plai…No findings

    Why it is in this group

    • The name "get_buy_price" says "get": a word for reading.
    Description, as the server wrote it
    The net price Liffey Metals pays today, in euro per gram of the item, for one metal and carat or fineness, with the spot quote time (spotAsOf), the basis and the deductions in plain English. Give the seller's county to add that county's postal arrangement and page. Omit carat for every grade of the metal. Same figures as https://liffeymetals.com/prices.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • get_buy_pricesThe net prices Liffey Metals pays today, in euro per gram of the item, for 9ct gold, 14ct gold, 18ct gold, 22ct gold, 24ct gold, Gold bullion / sovereigns, Sterling silver (925), F…No findings

    Why it is in this group

    • The name "get_buy_prices" says "get": a word for reading.
    Description, as the server wrote it
    The net prices Liffey Metals pays today, in euro per gram of the item, for 9ct gold, 14ct gold, 18ct gold, 22ct gold, 24ct gold, Gold bullion / sovereigns, Sterling silver (925), Fine silver (999), Other silver (800 to 900), Sterling-handled knives (925), Other silver-handled knives (800 to 900), Platinum (950), with the spot quote time. Same figures as https://liffeymetals.com/prices. No fees are deducted from these prices.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • get_faqShort, factual answers to the questions people ask before selling gold, silver or jewellery in Ireland: how to compare buyers, what to ask, safety of posting, payment, hallmarks, s…No findings

    Why it is in this group

    • The name "get_faq" says "get": a word for reading.
    Description, as the server wrote it
    Short, factual answers to the questions people ask before selling gold, silver or jewellery in Ireland: how to compare buyers, what to ask, safety of posting, payment, hallmarks, stones, tax, coins. Optional topic filter matches words in the question.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • get_guidesThe published guides and fact sheets, each with what it answers and its URL: selling gold, 9ct gold, scrap gold value, how buyers price jewellery, XRF testing, hallmarks, sterling …No findings

    Why it is in this group

    • The name "get_guides" says "get": a word for reading.
    Description, as the server wrote it
    The published guides and fact sheets, each with what it answers and its URL: selling gold, 9ct gold, scrap gold value, how buyers price jewellery, XRF testing, hallmarks, sterling versus plate, coins, tax, inherited jewellery, refining. Optional topic words filter the list.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • get_postal_pack_infoHow the free insured postal pack works: how to request it, what it covers in transit and on what condition, the free-return terms if the seller declines, the offer validity, the re…No findings

    Why it is in this group

    • The name "get_postal_pack_info" says "get": a word for reading.
    Description, as the server wrote it
    How the free insured postal pack works: how to request it, what it covers in transit and on what condition, the free-return terms if the seller declines, the offer validity, the return postage deduction and when it is waived, payment and ID. Give a county for that county's arrangement (free insured pack in the Republic; own tracked post to Dublin from Northern Ireland).

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • get_sell_priceWhat Liffey Metals charges today for casting grain, bullion coins and bars, VAT inclusive, in euro per gram or per piece, with the spot quote time for spot-linked products and whet…No findings

    Why it is in this group

    • The name "get_sell_price" says "get": a word for reading.
    Description, as the server wrote it
    What Liffey Metals charges today for casting grain, bullion coins and bars, VAT inclusive, in euro per gram or per piece, with the spot quote time for spot-linked products and whether each is in stock. Give a product slug or words from its name for one product; omit for every product. Same figures as https://liffeymetals.com/shop.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • list_countiesEvery county with its country (IE or NI), province, postal model (free insured pack in the Republic of Ireland; the seller's own tracked post to the Dublin PO box from Northern Ire…No findings

    Why it is in this group

    • The name "list_counties" says "list": a word for reading.
    Description, as the server wrote it
    Every county with its country (IE or NI), province, postal model (free insured pack in the Republic of Ireland; the seller's own tracked post to the Dublin PO box from Northern Ireland), the arrangement in one sentence and the county page URL, plus the other 26 EU member states we buy from on the Northern Ireland arrangement (WhatsApp quote, then the seller's own insured post to Dublin, no customs inside the EU), each with its page URL. Prices are the same everywhere. Great Britain is not served.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • list_servicesEvery service Liffey Metals offers with a one-line factual description and its URL: buying gold, silver and platinum, selling by post, refining, XRF testing, valuations, business a…No findings

    Why it is in this group

    • The name "list_services" says "list": a word for reading.
    Description, as the server wrote it
    Every service Liffey Metals offers with a one-line factual description and its URL: buying gold, silver and platinum, selling by post, refining, XRF testing, valuations, business accounts and the Buyer Programme. Unlisted services are live pages that are not in the navigation.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: 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 1.4.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http liffey-metals https://mcp.liffeymetals.com/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__liffey-metals__get_buy_price",
      "mcp__liffey-metals__get_buy_prices",
      "mcp__liffey-metals__get_sell_price",
      "mcp__liffey-metals__list_services",
      "mcp__liffey-metals__get_postal_pack_info",
      "mcp__liffey-metals__list_counties",
      "mcp__liffey-metals__get_guides",
      "mcp__liffey-metals__get_business_info",
      "mcp__liffey-metals__get_faq"
    ],
    "ask": [
      "mcp__liffey-metals__estimate_payout",
      "mcp__liffey-metals__how_to_sell",
      "mcp__liffey-metals__how_selling_works",
      "mcp__liffey-metals__request_postal_pack"
    ],
    "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 liffey-metals. Review it before you use it.