CBROS Notary & Decision Log
eu.coudrebros/notarycoudrebros.eustreamable-httpv1.0.0Scanned
Pay-and-anchor a hash or AI decision log on Cardano (CIP-0190). Non-custodial. MCP-native. Mainnet.
6 tools: 3 change things and 3 only read.
- Reads private data · 0
- Reads text others write · 0
- Can send data out · 0
- No findings
Anlyon alternative
3 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.
6 tools
Changes things 3Claude Code: ask
prepare_anchorAnchors content_hash on chain.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 Anchors content_hash on chain. Returns a partially-signed transaction (operator co-signed its fee input) -- add your own witness for from_address and submit. idempotency_key (optional) returns the same prior result on retry instead of building a new transaction.
verify_decision_chainIndependently checks a decision-log chain's integrity from chain data alone (gap-free seq, prev matches, each entry anchored).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 Independently checks a decision-log chain's integrity from chain data alone (gap-free seq, prev matches, each entry anchored). No auth needed.
verify_proofAuthoritative on-chain check by tx_hash (and/or content_hash to compare against).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 Authoritative on-chain check by tx_hash (and/or content_hash to compare against). No auth needed -- anyone holding a tx hash can verify it, like a receipt. Optionally pass content to re-hash locally server-side (never stored/logged).
Only reads 3Show 3 read-only tools
check_anchor_statusLooks up a previously prepared anchor or decision-log entry by proof_id.No findings
Why it is in this group
- The name "check_anchor_status" says "status": a word for reading.
Description, as the server wrote it Looks up a previously prepared anchor or decision-log entry by proof_id. Requires the api_key that created it.
get_notary_infoNo auth needed.No findings
Why it is in this group
- The name "get_notary_info" says "get": a word for reading.
Description, as the server wrote it No auth needed. Price, min confirmations, spec version, and supported hash algorithms.
prepare_decision_logAppends one entry to your hash-chained decision log.No findings
Why it is in this group
- The name "prepare_decision_log" says "log": a word for reading.
Description, as the server wrote it Appends one entry to your hash-chained decision log. content_hash is the hash of your own RFC-8785-canonicalized decision record (never send the record itself -- see docs/decision-record-v1.md). seq starts at 0 and increments by 1 each call; prev must equal the previous entry's content_hash (omit only for seq=0). Returns a partially-signed transaction to sign and submit yourself.
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 or untrusted-input or outbound.
- Reads private data0
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write0
- 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.
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 1.0.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http notary https://nftapi.coudrebros.eu/mcp/notary/claude mcp add --transport http notary https://nftapi.coudrebros.eu/mcp/notary/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.
{
"permissions": {
"allow": [
"mcp__notary__get_notary_info",
"mcp__notary__prepare_decision_log",
"mcp__notary__check_anchor_status"
],
"ask": [
"mcp__notary__prepare_anchor",
"mcp__notary__verify_proof",
"mcp__notary__verify_decision_chain"
],
"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 notary. Review it before you use it.
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/eu.coudrebros/notary/verify?hash=3d3298c09a5936cbfbe03b96b784904e7c7593f1bdcd11f9a0e4e24e175f0b18" | jq -e '.changed == false'Pinned hash 3d3298c09a59, from Oct 25, 2026, 22:17 UTC.
Watch
Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/eu.coudrebros/notary/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/eu.coudrebros/notary)Source: MCP Registry. Synced Oct 25, 2026, 22:17 UTC.