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CBROS Notary & Decision Log MCP Server

by coudrebros Your server? Claim it
answering

CBROS Notary & Decision Log is answering right now. Last checked 13 min ago. It exposes 6 tools.

Pay-and-anchor a hash or AI decision log on Cardano (CIP-0190). Non-custodial. MCP-native. Mainnet.

Uptime history 17 days of history · worst day 99%
17 days agonow
100.0%
Uptime 24h
91 of 91 checks
6
Tools
read from the server
211 ms
Response time
average over 24h
open, no key
Access
streamable-http

Nothing serious here today

Today is the operative word: we check CBROS Notary & Decision Log every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 13 min ago.

run in your terminal
claude mcp add notary --transport http https://nftapi.coudrebros.eu/mcp/notary/
Settings → Connectors → Add custom connector, then paste this address
https://nftapi.coudrebros.eu/mcp/notary/
~/.codex/config.toml
[mcp_servers.notary]
url = "https://nftapi.coudrebros.eu/mcp/notary/"
.cursor/mcp.json
{
  "mcpServers": {
    "notary": {
      "url": "https://nftapi.coudrebros.eu/mcp/notary/"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "notary": {
      "type": "http",
      "url": "https://nftapi.coudrebros.eu/mcp/notary/"
    }
  }
}

Available tools 6

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

prepare
prepare_anchor
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.
prepare_decision_log
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.
verify
verify_decision_chain
Independently checks a decision-log chain's integrity from chain data alone (gap-free seq, prev matches, each entry anchored). No auth needed.
verify_proof
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).
anchor
check_anchor_status
Looks up a previously prepared anchor or decision-log entry by proof_id. Requires the api_key that created it.
notary
get_notary_info
No auth needed. Price, min confirmations, spec version, and supported hash algorithms.

Endpoints

URLTransportStateLatencyChecked
https://nftapi.coudrebros.eu/mcp/notary/ streamable-http answering 242 ms 13 min ago

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CBROS Notary & Decision Log — questions

Answers built from our own checks of this server.

What can CBROS Notary & Decision Log do?
It exposes 6 tools, read directly from the server on our last check. Among them: check_anchor_status, get_notary_info, prepare_anchor, prepare_decision_log, verify_decision_chain, verify_proof. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
What is CBROS Notary & Decision Log mostly used for?
Its tools cluster around prepare and verify. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.
Is CBROS Notary & Decision Log working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 211 ms. The bar chart above shows every period we have measured.
How do I connect CBROS Notary & Decision Log?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does CBROS Notary & Decision Log need an API key?
No. CBROS Notary & Decision Log completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 6 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is CBROS Notary & Decision Log?
It answers our handshake in 211 ms on average, which is faster than 63% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.