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QRCode.Pub tools

by qrcode.pub · remote · no sign-in to list tools · v1.0.0 · published by pub.qrcode

Free QR code images; paid web page → Markdown, page metadata and file hosting via x402 (no API key).

Changes · 2
CompareRegistry entry

4 tools: 2 change things and 2 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 tools https://qrcode.pub/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warnqr_code

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

    Matched text

    annotations: {"readOnlyHint":true,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "generate": a word for a change.

    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.

4 tools

Changes things 2Claude Code: ask
  • host_fileUpload a file (≤ 5 MB; png, jpeg, webp, gif, pdf, json, txt, md or csv) and get a stable public URL https://qrcode.pub/f/<id> that any agent, tool or browser can fetch for 30 days.No findings

    Why it is in this group

    • The description's first verb is "upload": a word for a change.
    Description, as the server wrote it
    Upload a file (≤ 5 MB; png, jpeg, webp, gif, pdf, json, txt, md or csv) and get a stable public URL https://qrcode.pub/f/<id> that any agent, tool or browser can fetch for 30 days. Nothing executable is accepted. The answer includes a delete token. Price: $0.01 USDC per call via x402 (USDC on Base or Solana, no account; nothing is charged for a bad input).

    Annotations the server declares

    • readOnlyHint: false
    • destructiveHint: false
    • openWorldHint: true
  • qr_codeGenerate a QR code image (PNG or SVG) for any text or link.1 finding

    Why it is in this group

    • The description's first verb is "generate": a word for a change.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

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

      Matched text

      annotations: {"readOnlyHint":true,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "generate": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Generate a QR code image (PNG or SVG) for any text or link. Free, no account. The answer carries the image and a permanent image URL you can embed or print.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
Only reads 2Claude Code: allow
  • page_metadataFetch a public web page and return its metadata: title, description, canonical URL, language, OpenGraph and Twitter card tags, icons and parsed JSON-LD blocks.No findings

    Why it is in this group

    • The description's first verb is "fetch": a word for reading.
    Description, as the server wrote it
    Fetch a public web page and return its metadata: title, description, canonical URL, language, OpenGraph and Twitter card tags, icons and parsed JSON-LD blocks. Price: $0.005 USDC per call via x402 (USDC on Base or Solana, no account; nothing is charged for a bad input).

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
  • page_to_markdownFetch a public web page and return its title, description, clean Markdown (scripts, styles, nav chrome removed) and the list of links.No findings

    Why it is in this group

    • The description's first verb is "fetch": a word for reading.
    Description, as the server wrote it
    Fetch a public web page and return its title, description, clean Markdown (scripts, styles, nav chrome removed) and the list of links. No model call, deterministic. Price: $0.01 USDC per call via x402 (USDC on Base or Solana, no account; nothing is charged for a bad input).

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true

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 tools https://qrcode.pub/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__tools__page_to_markdown",
      "mcp__tools__page_metadata"
    ],
    "ask": [
      "mcp__tools__qr_code",
      "mcp__tools__host_file"
    ],
    "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 tools. Review it before you use it.