CBROS Notary & Decision Log

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

Crypto & Web3

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Call this server's tools from your browser. Nothing to install.

https://nftapi.coudrebros.eu/mcp/notary/

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Tool list from our last check. Connect live to refresh it.

check_anchor_status

Looks up a previously prepared anchor or decision-log entry by proof_id. Requires the api_key that created it.

api_keystring, required

proof_idstring, required

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Tools (6)

check_anchor_status

Looks up a previously prepared anchor or decision-log entry by proof_id. Requires the api_key that created it.

Argument	Type	Description
api_key*	string
proof_id*	string

Input schema (JSON)

{
  "type": "object",
  "title": "check_anchor_statusArguments",
  "required": [
    "proof_id",
    "api_key"
  ],
  "properties": {
    "api_key": {
      "type": "string",
      "title": "Api Key"
    },
    "proof_id": {
      "type": "string",
      "title": "Proof Id"
    }
  }
}

get_notary_info

No auth needed. Price, min confirmations, spec version, and supported hash algorithms.

No arguments.

Input schema (JSON)

{
  "type": "object",
  "title": "get_notary_infoArguments",
  "properties": {}
}

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.

Argument	Type	Description
api_key*	string
algorithm	string
content_hash*	string
from_address*	string
idempotency_key	any

Input schema (JSON)

{
  "type": "object",
  "title": "prepare_anchorArguments",
  "required": [
    "content_hash",
    "from_address",
    "api_key"
  ],
  "properties": {
    "api_key": {
      "type": "string",
      "title": "Api Key"
    },
    "algorithm": {
      "type": "string",
      "title": "Algorithm",
      "default": "sha2-256"
    },
    "content_hash": {
      "type": "string",
      "title": "Content Hash"
    },
    "from_address": {
      "type": "string",
      "title": "From Address"
    },
    "idempotency_key": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "title": "Idempotency Key",
      "default": null
    }
  }
}

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.

Argument	Type	Description
seq*	integer
prev	any
api_key*	string
algorithm	string
content_hash*	string
from_address*	string
idempotency_key	any

Input schema (JSON)

{
  "type": "object",
  "title": "prepare_decision_logArguments",
  "required": [
    "content_hash",
    "seq",
    "from_address",
    "api_key"
  ],
  "properties": {
    "seq": {
      "type": "integer",
      "title": "Seq"
    },
    "prev": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "title": "Prev",
      "default": null
    },
    "api_key": {
      "type": "string",
      "title": "Api Key"
    },
    "algorithm": {
      "type": "string",
      "title": "Algorithm",
      "default": "sha2-256"
    },
    "content_hash": {
      "type": "string",
      "title": "Content Hash"
    },
    "from_address": {
      "type": "string",
      "title": "From Address"
    },
    "idempotency_key": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "title": "Idempotency Key",
      "default": null
    }
  }
}

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.

Argument	Type	Description
agent_ref*	string

Input schema (JSON)

{
  "type": "object",
  "title": "verify_decision_chainArguments",
  "required": [
    "agent_ref"
  ],
  "properties": {
    "agent_ref": {
      "type": "string",
      "title": "Agent Ref"
    }
  }
}

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).

Argument	Type	Description
content	any
tx_hash	any
content_hash	any

Input schema (JSON)

{
  "type": "object",
  "title": "verify_proofArguments",
  "properties": {
    "content": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "title": "Content",
      "default": null
    },
    "tx_hash": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "title": "Tx Hash",
      "default": null
    },
    "content_hash": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "title": "Content Hash",
      "default": null
    }
  }
}