Pay-and-anchor a hash or AI decision log on Cardano (CIP-0190). Non-custodial. MCP-native. Mainnet.
Connect Remote server
claude mcp add --transport http notary https://nftapi.coudrebros.eu/mcp/notary/
{
"mcpServers": {
"notary": {
"url": "https://nftapi.coudrebros.eu/mcp/notary/"
}
}
}
{
"servers": {
"notary": {
"type": "http",
"url": "https://nftapi.coudrebros.eu/mcp/notary/"
}
}
}
Settings > Connectors > Add custom connector
URL: https://nftapi.coudrebros.eu/mcp/notary/
Tools 6 found in our last check
get_notary_infoNo auth needed. Price, min confirmations, spec version, and supported hash algorithms.
prepare_anchorAnchors 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_logAppends 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…
check_anchor_statusLooks up a previously prepared anchor or decision-log entry by proof_id. Requires the api_key that created it.
verify_proofAuthoritative 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).
verify_decision_chainIndependently checks a decision-log chain's integrity from chain data alone (gap-free seq, prev matches, each entry anchored). No auth needed.
Details
| Endpoint | https://nftapi.coudrebros.eu/mcp/notary/ (Streamable HTTP) |
| First published | 25 Oct 2026 |
| Last updated | 25 Oct 2026 |
| Registry name | eu.coudrebros/notary |
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