Stockmarket Loans: broker margin rates
loans.stockmarket/stockmarket-loansstockmarket.loansstreamable-httpv1.2026.1101.1Scanned
Published US broker margin rates by tier, ranked at any balance, with borrowing-cost math.
3 tools: 1 change things and 2 only read.
- Reads private data · 1
- Reads text others write · 1
- Can send data out · 0
- No findings
Tools listed without sign-in. Remote posture
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 →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.
3 tools
Changes things 1Claude Code: ask
borrowing_costWhat a margin loan costs over a number of months at every compared broker's published rate, as the site's margin interest calculator works it: rate, interest per month, total over …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 What a margin loan costs over a number of months at every compared broker's published rate, as the site's margin interest calculator works it: rate, interest per month, total over the period and the extra cost versus the lowest rate, simple interest on a flat balance. Optionally adds a rate you were quoted (an SBLOC offer or a negotiated margin rate) or narrows the table to one broker.
Annotations the server declares
- title: Cost of borrowing against stocks
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
Only reads 2Show 2 read-only tools
compare_brokersEvery compared broker's published annual margin rate on one loan balance, ranked from lowest to highest (ties shared), with the tier that applies, the yearly interest at that rate,…No findings
Why it is in this group
- The name "compare_brokers" says "compare": a word for reading.
Description, as the server wrote it Every compared broker's published annual margin rate on one loan balance, ranked from lowest to highest (ties shared), with the tier that applies, the yearly interest at that rate, schedule dates and source links. Brokers that print no rate at that balance are listed separately with the reason.
Annotations the server declares
- title: Compare broker margin rates at a balance
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
get_margin_ratesOne broker's published margin rate schedule: every balance tier with its annual rate and the broker's own wording for how it is set, the base rate and its date, whether tiers blend…Reads private dataReads text others writeNo findings
Why it is in this group
- The name "get_margin_rates" says "get": a word for reading.
What it can reach
- private-dataThe description's first sentence says "note": it reads notes.
- untrusted-inputThe description's first sentence says "url": it reads web pages, which anyone can write.
Description, as the server wrote it One broker's published margin rate schedule: every balance tier with its annual rate and the broker's own wording for how it is set, the base rate and its date, whether tiers blend, maintenance and minimum-equity notes, the schedule date, our check date and the broker's source URL. A family name like "Interactive Brokers" returns each of its plans.
Annotations the server declares
- title: Margin rates for a broker
- 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.
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 outbound.
- Reads private data1
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write1
- Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
- Can send data out0
- Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.
Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.
Remote posture
What anyone on the internet sees at the remote endpoint: an anonymous initialize and tools/list, and the public OAuth metadata.
Looked at Nov 2, 2026, 00:20 UTC, unchanged since Nov 2, 2026. No credentials were sent and no tool was called. What is looked at.
- Reachable
- yes
- HTTP status of an anonymous initialize
- 200
- tools/list served without credentials
- yes
- Tools that change things, listed without credentials
- 1
- Protocol version
- 2025-06-18
- WWW-Authenticate on 401
- not observed
- resource_metadata in WWW-Authenticate
- not observed
- RFC 9728 protected resource metadata
- not observed
- Authorization servers
- not observed
- Legacy HTTP+SSE transport
- no
- Dynamic client registration
- not observed
- Client ID metadata documents
- not observed
- WarnThe whole server
The endpoint served tools/list without credentials, and the list has 1 tool that changes things (1 write). Whether a call also works without credentials was not tested: tools are never called.
What this check looks forMatched text
https://stockmarket.loans/mcp: tools/list returned 3 tools to an anonymous client, including borrowing_cost (write)
Findings
Matches of fixed checks, with the text they matched.
No check matched anything in these tool definitions. That is not a safety guarantee.
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.
Install
Pinned to version 1.2026.1101.1. Values in angle brackets are yours to fill in.
claude mcp add --transport http stockmarket-loans https://stockmarket.loans/mcpclaude mcp add --transport http stockmarket-loans https://stockmarket.loans/mcpRun 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.
{
"permissions": {
"allow": [
"mcp__stockmarket-loans__get_margin_rates",
"mcp__stockmarket-loans__compare_brokers"
],
"ask": [
"mcp__stockmarket-loans__borrowing_cost"
],
"deny": []
}
}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 stockmarket-loans. Review it before you use it.
Capability tags behind 1 rule
- mcp__stockmarket-loans__get_margin_rates private-data, untrusted-input
Pin
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/loans.stockmarket/stockmarket-loans/verify?hash=b005342ed38e7520b60b584326ba3ab28aeef686d59e714f6e5943b813be3ac0" | jq -e '.changed == false'Pinned hash b005342ed38e, from Nov 1, 2026, 22:18 UTC.
Watch
Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/loans.stockmarket/stockmarket-loans/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/loans.stockmarket/stockmarket-loans)Source: MCP Registry. Synced Nov 1, 2026, 23:18 UTC.