MCP servers › com.brukledger › bruk

MCP server · registry snapshot 2026-10-23 · last tested 2026-10-23

com.brukledger/bruk

Verified XRP Ledger answers with proof: payment, send, and issuer checks. Pay per call via x402. — the publisher's description

1 of 2 record checks metRead-only · tools listed 2026-10-23Topic: finance-and-payments · AI-classifiedversion 0.8.0streamable HTTP14 tools

Summary

com.brukledger/bruk is a remote MCP server listed in the official MCP registry at version 0.8.0. On 2026-10-23 ProtocolProbe connected to it in read-only mode and read its inventory: 14 tools, 0 resources and 0 prompts.

Record checks

1 of 2 record checks met · 7 do not apply

met: Registry entry is active and says how to run it
not met: Source repository link opens
not applicable: Repository is not archived
not applicable: Code pushed to the repository in the 90 days before our check
not applicable: Repository publishes a security policy (SECURITY.md)
not applicable: Package names its licence with a standard (SPDX) identifier
not applicable: The version the registry lists can be installed and is not withdrawn
not applicable: npm package carries build provenance (attestation)
not applicable: No known critical or high advisory in the package or its dependencies

Not ranked by downloads: a remote server publishes no download figure
Not ranked by stars: no public GitHub repository

From public records, not a safety rating. Each check with its reason · Is it safe to install?

Key facts

Runs: remote (hosted by the publisher)
Transport: streamable HTTP
Sign-in: none needed to open a session
Tools: 14
Described as changing data: 1 of 14 toolsAI-classified
Topic: finance-and-paymentsAI-classified
Last tested: 2026-10-23

Add to your client

Worth knowing before you connect it

1 tool is described as changing something (payment_watch): our AI model's reading of the descriptions, not something we tested, and the server opened a session without any credential. We did not call it.

Each line comes from a section below, with its source and date.

How fresh this is

Live-tested: yes, a real session (not a text-only review)
Last tested: 2026-10-23
Mode: read-only (no tool calls)
Latest version: 0.8.0, published 2026-10-18 (registry, as of the 2026-10-23 snapshot)
First listed version: 2026-10-18 (earliest version still in the registry; older removed versions would be earlier)
Registry data: snapshot 2026-10-23
Package and repository: checked 2026-10-22
Engine: mcp-runtime-engine@0.1.0 · sdk@1.32.0

Changes since the last refresh

New in the registry: not in the list of 2026-10-04, listed on 2026-10-23 with version 0.8.0 (published 2026-10-18).

Source: the official MCP Registry list on 2026-10-04 and on 2026-10-23.

What it is

What does this server offer?

Observed inventory

14tools

0resources

0prompts

1 of 14 tools are described as changing something (creating, editing, deleting, sending or running).

ledger_pulsereads or searches
“XRP Ledger network health right now: latest validated ledger, close time, transactions and payments in it, fee levels, load, and rolling averages cross-checked against a direct ledger read.”
Publisher declares: read-only yes · open-world yes
Takes no inputs.
payment_checkreads or searches
“Verifies that an XRP Ledger payment settled as expected: validation, result code, destination, destination tag, currency, issuer, and the amount actually delivered, which exposes partial-payment tric…”
Publisher declares: read-only yes · open-world yes
7 inputs, 1 required
- txstringrequired“64-character transaction hash”
- networkstring“Default mainnet”
- destinationstring“XRP Ledger r-address”
- amountstring
- currencystring
- issuerstring“XRP Ledger r-address”
- destination_taginteger
issuer_checkreads or searches
“Checks whether an XRP Ledger token issuer is who it claims to be: two-way domain verification (on-ledger Domain field against the domain's xrp-ledger.toml), tokens issued and outstanding, and control…”
Publisher declares: read-only yes · open-world yes
1 input, 1 required
- accountstringrequired“XRP Ledger r-address”
token_checkon 5 other serversreads or searches
“Identifies one XRP Ledger token from the validated ledger: a trust-line token (currency code plus issuer) or a multi-purpose token (48-hex issuance id).”
Publisher declares: read-only yes · open-world yes
3 inputs
- mpt_issuance_idstring“48-hex multi-purpose token issuance id.”
- currencystring“Trust-line token code, with issuer.”
- issuerstring“XRP Ledger r-address”
large_paymentsreads or searches
“Lists large XRP Ledger payments (50,000+ XRP or major stablecoins) in a recent window of up to 120 minutes, each independently re-checked on the ledger, with an explicit note when the window is not f…”
Publisher declares: read-only yes · open-world yes
3 inputs
- minutesinteger
- min_valuestring“At least 50000”
- limitinteger
send_checkreads or searches
“Pre-send check for an XRP Ledger payment: whether the destination is activated, requires a destination tag, blocks or pre-approves senders, can hold the token (trust line, or MPT opt-in and issuer ap…”
Publisher declares: read-only yes · open-world yes
8 inputs, 1 required
- destinationstringrequired“XRP Ledger r-address”
- amountstring
- currencystring
- issuerstring“XRP Ledger r-address”
- destination_taginteger
- sourcestring“XRP Ledger r-address”
- networkstring“Default mainnet”
- mpt_issuance_idstring“48-hex MPT issuance id.”
payment_watchsends messagesdescribed as changing data
“Payment arrival alert: watches an XRP Ledger address for up to 24 hours and POSTs a signed webhook when a matching payment is final (validated, tesSUCCESS, delivered amount checked), or a watch.expir…”
Publisher declares: read-only no · open-world yes
8 inputs, 2 required
- addressstringrequired“XRP Ledger r-address”
- webhookstringrequired“Public https URL for signed events”
- destination_taginteger
- min_amountstring
- currencystring
- issuerstring“XRP Ledger r-address”
- hoursinteger
- networkstring“Default mainnet”
receipt_cardgenerates content
“Verified payment receipt image (1200x675 PNG) for an XRP Ledger payment, drawn only from the validated ledger: delivered amount, sender, recipient, destination tag, ledger, close time, result, option…”
Publisher declares: read-only yes · open-world yes
7 inputs, 1 required
- txstringrequired“64-character transaction hash”
- networkstring“Default mainnet”
- destinationstring“XRP Ledger r-address”
- amountstring
- currencystring
- issuerstring“XRP Ledger r-address”
- destination_taginteger
ledger_momentgenerates content
“Ledger moment image (1200x675 PNG): one validated XRP Ledger ledger drawn as one tile per transaction in ledger order, colored by type (payments, DEX offers, trust lines, AMM, NFTs, other), failed tr…”
Publisher declares: read-only yes · open-world yes
2 inputs
- ledger_indexinteger
- networkstring“Default mainnet”
list_serviceson 162 other serversreads or searches
“Free.”
Publisher declares: read-only yes
Takes no inputs.
get_sampleon 24 other serversreads or searches
“Free.”
Publisher declares: read-only yes · open-world yes
1 input, 1 required
- servicestringrequired
free_send_checkreads or searches
“Free, one per user per day.”
Publisher declares: read-only yes · open-world yes
7 inputs, 1 required
- destinationstringrequired“XRP Ledger r-address”
- amountstring
- currencystring
- issuerstring“XRP Ledger r-address”
- destination_taginteger
- sourcestring“XRP Ledger r-address”
- networkstring“Default mainnet”

Show 2 more tools

token_typesreads or searches
“Free guide, not a live check.”
Publisher declares: read-only yes
Takes no inputs.
learn_about_brukreads or searches
“Free.”
Publisher declares: read-only yes
Takes no inputs.

Each quoted sentence is the first sentence of the publisher’s own description. The kind of tool and the “changes data” mark are our AI model’s reading of that description, not something we tested: two differently worded runs had to agree, otherwise no label is shown, and nobody has checked them by hand. A tool without the “changes data” mark is described as only reading, searching or calculating, or the two runs did not agree. No tool was called. Read the publisher’s full description before relying on it. “Publisher declares” lists the hints the server itself sends with the tool (MCP annotations: read-only, destructive, idempotent, open-world); they are the publisher's claims, not checked by us. Inputs are the parameters in the tool's own input schema: name, declared type, whether it is required, and the first sentence of its description. Read 2026-10-23.

How well are its tools described?

Features #4 and #5

How clearly this server's own tool descriptions say what a tool does, and how consistent its tool list is. The first part is an AI model's yes/no reading of each description; the second part is counted. We do not turn it into a grade.

Descriptions

AI reading of each description

Says what the tool does: 100% of 14 tools
Says what it returns: 100% of 14 tools
States limits, defaults or errors: 45% of 11 tools
Says when to use it: 77% of 13 tools
Items covered per tool: 3.3 of 4 on average

Counted from the listing

Parameters with a description: 57% of 47
Tools with a description: 100% of 14
Typical description length: 441 characters

The tool set

Counted from the listing

Tools: 14
Size of the list: about 3,276 tokens for an agent to load (characters ÷ 4)
Naming: 14 of 14 names use snake_case

AI reading: easy to mix up

No pair found.

The AI items cover 14 of 14 tools: for a tool where two differently worded runs disagreed, that item is left out. They were not checked by hand, and no tool was called. “Easy to mix up” means two tools whose names or descriptions overlap without saying how they differ; the AI found none. We do not rate whether the tool set is complete or whether side effects are spelled out, because our AI reading of those was not reliable enough.

How do I add it to my client?

Config from the registry entry

From the remote endpoint (Streamable HTTP)

We connected to this URL on 2026-10-23 (a read-only session: no tool was called).

Add to CursorAn install link in the format Cursor documents, holding the Cursor config below.

Claude Desktop or claude.ai

Settings → Connectors → Add custom connector, then paste:
https://bruk-agent-api.fly.dev/mcp

Cursor · .cursor/mcp.json in a project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "bruk": {
      "url": "https://bruk-agent-api.fly.dev/mcp"
    }
  }
}

VS Code · .vscode/mcp.json

{
  "servers": {
    "bruk": {
      "type": "http",
      "url": "https://bruk-agent-api.fly.dev/mcp"
    }
  }
}

VS Code (command line) · Bash or zsh terminal (macOS, Linux)

code --add-mcp '{"name":"bruk","type":"http","url":"https://bruk-agent-api.fly.dev/mcp"}'

Claude Code

claude mcp add --transport http bruk https://bruk-agent-api.fly.dev/mcp

Try it in the MCP Inspector · runs on your machine, opens in your browser · Node 22.19+

npx @modelcontextprotocol/inspector@2.11.0 --server-url https://bruk-agent-api.fly.dev/mcp --transport http

The server runs on the operator's infrastructure; it may ask you to sign in when you first connect.
The MCP Inspector lists the server's tools, resources and prompts; a tool you call there runs for real.

Built from the server's registry entry with each client's documented format (checked 2026-10-14; the Cursor link and the VS Code command 2026-10-19; the MCP Inspector command 2026-10-21). Values in < > are yours to fill in; this page never contains a key. Where the server needs a setting the entry does not declare, it can still fail to start.

Does the registry listing match what we found?

Feature #6

The registry verifies a package once, when it is published, and does not re-check it. A difference below is about the listing, not a judgement of the publisher.

Registry says	We found	Result	Source · date
Remote endpoint bruk-agent-api.fly.dev/mcp	Session opened	matches	our test · 2026-10-23
No credential declared as required	Opened a session without any credential	matches	our test · 2026-10-23

Choosing

Record checks

Public records · not a safety rating

1 of 2 record checks met · 7 do not apply

Not ranked by downloads: a remote server publishes no download figure
Not ranked by stars: no public GitHub repository

MetRegistry entry is active and says how to run itActive, with a package or a remote address.
Not metSource repository link opensThe registry entry gives no repository link.
Does not applyRepository is not archivedNo public GitHub repository to read.
Does not applyCode pushed to the repository in the 90 days before our checkNo public GitHub repository to read.
Does not applyRepository publishes a security policy (SECURITY.md)No public GitHub repository to read.
Does not applyPackage names its licence with a standard (SPDX) identifierRemote server: it ships no package.
Does not applyThe version the registry lists can be installed and is not withdrawnRemote server: it ships no package.
Does not applynpm package carries build provenance (attestation)Remote server: it ships no package.
Does not applyNo known critical or high advisory in the package or its dependenciesRemote server: it ships no package.

Read from public records only: the registry entry, npm/PyPI, GitHub and advisory databases, checked 2026-10-22. No tool was called. Only “met” and “not met” are counted, so the total differs between servers; a check that does not apply or that we could not run is listed, never counted against it. It is not a safety rating. How each check works · Leaderboards

Common questions about com.brukledger/bruk

Answered from the data above

Is com.brukledger/bruk safe to install?

We do not rate servers as safe or unsafe. 1 of its 2 applicable record checks are met (facts from public records, each listed on this page). What the records show: 1 of its tools describes changing data (our AI model's reading of the descriptions). These are facts with their sources on this page, not a safety guarantee, and we did not run its tools.

Does com.brukledger/bruk need an API key or sign-in?

It opened a session without any credential on 2026-10-23. The registry entry declares no required credential; no declaration is not a guarantee.

Has com.brukledger/bruk been security tested?

Partly. 2 of the 14 checks that apply to it were exercised. We connected and read what the server declares, but did not call its tools: ProtocolProbe calls no server's tools for anything it publishes. This is our choice, not a block by the server. No security verdict is published before verification.

What can com.brukledger/bruk do?

It lists 14 tools. In our AI model's reading of their descriptions (two runs had to agree, nobody checked it by hand), they include tools that read or search, send messages and generate content. We did not call any tool, so this describes the text, not the behaviour.

Can com.brukledger/bruk change or delete data?

1 of its tools says in its description that it creates, edits, deletes, sends or runs something (our AI model's reading). We did not call any tool, so we cannot say what actually happens.

Found this page useful?

Anonymous · no sign-in

A quick, anonymous reaction — no account, no email. One per kind from your browser. The tally updates when the page is next refreshed, and it is only a rough count, never a safety rating or a measured number of people.

Similar servers

Same topic · AI-read

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io.github.cmendezs/mcp-ksef-plalso has tools that generates content, reads or searches, sends messagescompare with this one
io.github.cmendezs/mcp-einvoicing-aealso has tools that generates content, reads or searches, sends messagescompare with this one
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io.github.cnghockey/sats4aiSats4AI - Bitcoin-Powered AI Toolsalso has tools that generates content, reads or searches, sends messagescompare with this one

Active servers whose topic is also “finance-and-payments” and that have at least one tool of the same kind; most kinds in common first, then most GitHub stars. The topic and the tool kinds are an AI model's reading of the publishers' descriptions, not checked by hand. Similar is not a recommendation.

Compare with another server

Side by side: registry entry, our read-only session, the tools and the 18 classification fields. Same values as each page; no score.

Security testing

What did we test, and what did we leave out?

18 checks · features #1, #2

Not probed (we call no server's tools)

We connected and read what the server declares, but did not call its tools: ProtocolProbe calls no server's tools for anything it publishes. This is our choice, not a block by the server. No security score is given; a check we did not run is never counted as passed.

The 18 checks at a glanceour test · 2026-10-23

Inventory: exercised
Hidden instructions: exercised
Real execution: not run · our policy
Secret leak: not run · nothing to check it against
Internal addresses: not run · our policy
Unconfirmed changes: not run · our policy
Bad input: not run · our policy
Model requests: not run · nothing to check it against
Sensitive questions: not run · nothing to check it against
Folder boundary: not run · our policy
Log leaks: not run · nothing to check it against
Hidden content: not run · nothing to check it against
Fake assistant turns: not applicable
Token passthrough: not applicable
Token audience: not applicable
Sign-in redirect: not run · our policy
Consent handling: not testable from outside
Sign-in metadata: not applicable

2 exercised12 not run (reason given)4 not applicable

Each check ends in exactly one state: exercised, not run (with the reason), or not applicable (with the reason). 2 of the 14 checks that apply to it were exercised. We do not publish security-check outcomes for named servers.

Exercised · 2

1Inventory
tool-listReads the declared tools, resources and prompts.exercised
2Hidden instructions
description-poisoningLooks for hidden instructions in tool descriptions.exercised

Not run, with the reason · 12

3Real execution
real-executionCalls a tool and checks what really happens.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
4Secret leak
canary-leakPlants a fake secret and checks whether it leaks.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against
5Internal addresses
ssrfChecks whether a tool can be steered to internal addresses.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
6Unconfirmed changes
write-without-confirmationChecks whether tools that change data act without asking.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
7Bad input
error-handlingSends bad input and watches how the server answers.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
8Model requests
samplingChecks whether the server asks the client's model to act for it.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against
9Sensitive questions
elicitation-sensitive-dataChecks whether the server asks users for sensitive data.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against
10Folder boundary
root-boundaryChecks whether the server reaches outside the folders it was given.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
11Log leaks
logging-side-channelChecks whether log messages carry data they should not.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against
12Hidden content
audience-hidingChecks resources that hide content from the user.This check needs content the server returns, and nothing was read or called.not run · nothing to check it against
16Sign-in redirect
open-redirectChecks the sign-in redirect for abuse.Testing the sign-in redirect means sending probes to the operator's sign-in service, which we do not do.not run · our policy
17Consent handling
confused-deputyChecks consent handling when one service acts for another.Depends on the operator's own consent screen, which differs per server and cannot be tested from outside.not testable from outside

Does not apply to this server · 4

13Fake assistant turns
fake-assistant-turnChecks prompts that pose as the assistant's own words.The server exposes no prompts.not applicable
14Token passthrough
token-passthroughChecks whether the server forwards a user's token to other services.The server opened a session without sign-in, so there is no token flow to check.not applicable
15Token audience
token-audience-validationChecks whether tokens meant for another service are accepted.The server opened a session without sign-in, so there is no token flow to check.not applicable
18Sign-in metadata
oauth-url-schemeChecks the published sign-in metadata for unsafe URLs.No sign-in (OAuth) metadata is published, so there are no sign-in addresses to check.not applicable

Source: our own test, 2026-10-23, mcp-runtime-engine@0.1.0. Which checks count and why follows our published scoring model.

What happened during the test?

Feature #8

The steps in order, as the test record holds them.

0 msStarted a read-only session with the server's remote endpoint
989 msConnected after 0 redirects. No credential was sent or needed.
Read the inventory: 14 tools, 0 resources, 0 prompts.
7,847 msFinished: 2 checks exercised.

Reference

How is it classified?

18 fields

One value per field, each with its source. Fields written by AI models are marked. A field with no value says why.

TopicAI-classified

finance-and-payments

AI-classified · 2026-10-23

Pricing modelAI-classified

no value

No value: the AI answer was held back because the quoted text did not clearly support it.

Programming language

does not apply

no existing GitHub repository (server declares no repository link, so there is nothing to fetch)

Hosting type

remote (hosted by the publisher)

registry · 2026-10-23

MCP capability

tools

our test · 2026-10-23

Transport

streamable HTTP

registry · 2026-10-23

Required credentials

none declared

registry · no declaration is not a guarantee

Package registry

does not apply

remote-only server: no package is shipped, so there is no package registry

Freshness

0–30 days

registry updatedAt · 2026-10-23

Lifecycle status

active

registry · 2026-10-23

License class

does not apply

remote-only server: ships no package, so there is nothing to look up in a package registry

Integrity hash

does not apply

remote-only server: ships no package, so there is nothing to look up in a package registry

Signature / provenance

does not apply

remote-only server: ships no package, so there is nothing to look up in a package registry

Dependency advisories

does not apply

ships no package, so there are no dependencies to audit

Popularity

does not apply

remote-only server: ships no package, so there is nothing to look up in a package registry

Publisher signals

not stated

no readable GitHub owner to describe

Maintenance

does not apply

server declares no repository link, so there is nothing to fetch

Environment

the publisher's infrastructure

where it runs, from the hosting type

“Not stated” means the source did not state it; “does not apply” means it does not apply to this kind of server; “our limit” means our own lookup failed. A linked value opens the directory filtered to the same value.

Cite or correct this page

Sources and corrections

Suggested citation

ProtocolProbe. “com.brukledger/bruk: MCP server record.” Data checked 2026-10-23. https://protocolprobe.com/mcp/servers/com.brukledger/bruk

Figures are valid for the date shown. Our facts on this page are CC BY 4.0: reuse them with a link and the check date. Quoted text (the publisher’s descriptions, website quotes, tool names) is not ours to license.

As JSON: this record in the API · API documentation.

Badge for your README

[![ProtocolProbe](https://protocolprobe.com/api/v1/badge/com.brukledger/bruk)](https://protocolprobe.com/mcp/servers/com.brukledger/bruk)

It shows this server's record-check count: facts from public records, no tool called. It is not a security rating or a pass. It links here and updates after each data reload.

Something wrong, or is this yours?

If a fact here is wrong, tell us and we will re-check it. If you operate this server, you can run our checks on it yourself with the free self-test command; we call no server’s tools ourselves for anything shown here.

Write to hello@protocolprobe.com · corrections log · methodology