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holdmark · facts about online stores

by holdmark.org · remote · no sign-in to list tools · v1.0.0 · published by org.holdmark

Does this store deliver and refund? Measured with carriers and payment processors.

Changes · 1
CompareRegistry entry

3 tools: 1 change things and 2 only read.

Scanned Oct 22, 2026

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

claude mcp add --transport http registry https://holdmark.org/mcp

Tools

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

3 tools

Changes things 1Claude Code: ask
  • how_holdmark_worksHow every figure in the registry is calculated, what the words mean, and above all what holdmark does NOT measure.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.
    Description, as the server wrote it
    How every figure in the registry is calculated, what the words mean, and above all what holdmark does NOT measure. Read this before drawing a conclusion from any record: it is what stops a figure being read as something it is not.
Only reads 2Claude Code: allow
  • find_storesList the online stores in the holdmark registry, with a summary of their published facts.No findings

    Why it is in this group

    • The name "find_stores" says "find": a word for reading.
    Description, as the server wrote it
    List the online stores in the holdmark registry, with a summary of their published facts. Each store publishes the same facts under the same rules: whether it delivers its orders (checked with the carrier) and whether it refunds money (checked with the payment processor). holdmark does not rank stores and has no score, so compare them yourself by whatever the person actually cares about. The registry only contains stores that connected their data. A store missing from it has not been judged.
  • get_storeRead the full holdmark record for one store, by its domain.No findings

    Why it is in this group

    • The name "get_store" says "get": a word for reading.
    Description, as the server wrote it
    Read the full holdmark record for one store, by its domain. Figures are rounded against the merchant, order volume is published in bands rather than exact numbers, and every figure carries the period it covers and the source it came from. A fact with no data answers "not_measured" with its reason, never "no". If the domain is not in the registry you get a plain answer saying so, which is not a verdict about that store.

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 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http registry https://holdmark.org/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__registry__find_stores",
      "mcp__registry__get_store"
    ],
    "ask": [
      "mcp__registry__how_holdmark_works"
    ],
    "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 registry. Review it before you use it.