SIBIDZ

io.sibidz/sibidzsibidz.iostreamable-httpv8.12.5Scanned 56 minutes ago

Peer-to-peer collectible card auctions. Agents search lots, watch items and bid within user limits.

9 tools: 5 can delete or cancel things, 1 do something that can't be undone and 3 change things.

Reads private data · 0
Reads text others write · 6
Can send data out · 1
2 findings

Anlyon alternative

9 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 →

Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

9 tools

Deletes or cancels 5Removes, cancels or revokes something.Claude Code: deny

accountConnect, verify and manage account details or agreements.Reads text others writeNo 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 destructive (destructiveHint: true).
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Connect, verify and manage account details or agreements. Paid actions require request_id and max_fee; status and verification are free. See auction://reference.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: true
- idempotentHint: true
- openWorldHint: true
bidJoin a run, authorize a maximum or place an explicit manual bid.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 destructive (destructiveHint: true).
Description, as the server wrote it
Join a run, authorize a maximum or place an explicit manual bid. Paid actions require request_id and max_fee; automatic increments and maximum cancellation are free. See auction://reference.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: true
- idempotentHint: true
- openWorldHint: false
buyBuy or negotiate under frozen terms.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 destructive (destructiveHint: true).
Description, as the server wrote it
Buy or negotiate under frozen terms. Paid actions require request_id and max_fee; interest, decline and withdrawal are free. Pay the seller directly. See auction://reference.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: true
- idempotentHint: true
- openWorldHint: false
creditsPrepare top-ups or approve transfers, withdrawals, accounts and exports.Reads text others writeNo 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 destructive (destructiveHint: true).
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Prepare top-ups or approve transfers, withdrawals, accounts and exports. Paid authority requires request_id and max_fee; x402 also requires an explicit cap. See auction://reference.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: true
- idempotentHint: true
- openWorldHint: true
sellPrepare private listings, then approve exact publication, edits or withdrawal.Reads text others writeNo 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 destructive (destructiveHint: true).
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Prepare private listings, then approve exact publication, edits or withdrawal. Paid stages require request_id and max_fee; preparation never publishes. See auction://reference.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: true
- idempotentHint: true
- openWorldHint: true

Can't be undone 1Sends, pays, publishes or merges: once done, it cannot be taken back.Claude Code: ask

contactSend free support or appeals, or paid private item messages with request_id and max_fee.Reads text others writeCan send data outNo findings
Why it is in this group
- The description's first verb is "send": a word for sending, and what is sent cannot be taken back.
- The input addresses people (input.to): what it sends cannot be taken back.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- outboundThe description's first verb is "send": it sends or publishes something to other people.
- outboundThe input takes a destination (input.to): what the tool writes goes there.
Description, as the server wrote it
Send free support or appeals, or paid private item messages with request_id and max_fee. Reads are free; messages never authorize spending. See auction://reference.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true

Changes things 3Creates or changes something that can be changed back.Claude Code: ask

browseRead exact records or search.Reads text others write1 finding
Why it is in this group
- The name "browse" says "browse": a word for reading.
- The server marks it as not read-only (readOnlyHint: false).
What it can reach
- untrusted-inputThe name "browse" says "browse": it reads web pages, which anyone can write.
Findings
- Warn
  The server marks "browse" as not read-only (readOnlyHint: false), and its words say it reads.
  Matched text
  annotations: {"readOnlyHint":false,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "browse" says "browse": a word for reading.
  What this check looks for
Description, as the server wrote it
Read exact records or search. Paid searches and private pages require request_id and max_fee; public reads are free. Use detail=full for terms. See auction://reference.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
feedbackSubmit an immutable review under its frozen fee or confirm handover free.No findings
Why it is in this group
- The description's first verb is "submit": a word for a change.
Description, as the server wrote it
Submit an immutable review under its frozen fee or confirm handover free. Paid reviews require request_id and max_fee. Read eligibility first. See auction://reference.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
researchRead prices free; approve identification or a report with request_id and max_fee.Reads text others write1 finding
Why it is in this group
- The description's first verb is "read": a word for reading.
- The server marks it as not read-only (readOnlyHint: false).
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Findings
- Warn
  The server marks "research" as not read-only (readOnlyHint: false), and its words say it reads.
  Matched text
  annotations: {"readOnlyHint":false,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true}; The description's first verb is "read": a word for reading.
  What this check looks for
Description, as the server wrote it
Read prices free; approve identification or a report with request_id and max_fee. Status, downloads and cancellation are free; each purchase needs approval. See auction://reference.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- idempotentHint: 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.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data.

Reads private data0: Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write6: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.; account
browse
contact
credits
research
sell
Can send data out1: Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.; contact

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Findings

Matches of fixed checks, with the text they matched.

2 warn

Warnbrowse
The server marks "browse" as not read-only (readOnlyHint: false), and its words say it reads.
Matched text
annotations: {"readOnlyHint":false,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "browse" says "browse": a word for reading.
What this check looks for
Warnresearch
The server marks "research" as not read-only (readOnlyHint: false), and its words say it reads.
Matched text
annotations: {"readOnlyHint":false,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true}; The description's first verb is "read": a word for reading.
What this check looks for

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

Pinned to version 8.12.5. Values in angle brackets are yours to fill in.

claude mcp add --transport http sibidz https://sibidz.io/mcp

claude mcp add --transport http sibidz https://sibidz.io/mcp

Run in a terminal.

Claude Code permissions

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

.claude/settings.json

{
  "permissions": {
    "allow": [],
    "ask": [
      "mcp__sibidz__browse",
      "mcp__sibidz__feedback",
      "mcp__sibidz__contact",
      "mcp__sibidz__research"
    ],
    "deny": [
      "mcp__sibidz__account",
      "mcp__sibidz__sell",
      "mcp__sibidz__bid",
      "mcp__sibidz__buy",
      "mcp__sibidz__credits"
    ]
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as sibidz. Review it before you use it.

Capability tags behind 6 rules

mcp__sibidz__account untrusted-input
mcp__sibidz__browse untrusted-input
mcp__sibidz__sell untrusted-input
mcp__sibidz__credits untrusted-input
mcp__sibidz__contact untrusted-input, outbound
mcp__sibidz__research untrusted-input

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/io.sibidz/sibidz/verify?hash=8eac3710840d67843b887dd13dc167989ec5a2b63667c2d1079542b2d5d1398a" | jq -e '.changed == false'

Pinned hash 8eac3710840d, from Nov 1, 2026, 11:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.sibidz/sibidz/changes.xml

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

Badge

[![anlyon.dev](https://anlyon.dev/badge/io.sibidz/sibidz.svg)](https://anlyon.dev/servers/io.sibidz/sibidz)

Source: MCP Registry. Synced Nov 1, 2026, 11:17 UTC.