MCP-Server
Doichain
io.github.neubuot/doichain
Was dieses MCP kann
Anchors document hashes, verifies proofs and signed messages, and provides Doichain names, blocks, transactions, balances, and network status.
Funktionen
Tools
13
Tools
anchor_proof
Anchor a proof of existence
Anchor a SHA-256 hash on the Doichain as a tamper-evident timestamp (proof of existence, name
poe/<sha256>). Free for users, limited per IP address and day (see get_anchoring_quota). Confirms with the next
block, usually within 10 minutes, then check_proof returns block height and time. If the hash is already
anchored or pending, the existing proof is returned instead of creating a second one. If an earlier proof of the
hash has expired, it stays valid and is returned with expired true. Nothing is registered unless reanchor_expired
is true. Only the hash and the optional note and file name become public, never the document itself. The
operator of this server pays for the name and holds it. The proof shows that a document with this hash existed
no later than the block time, not who submitted it.
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'title': 'anchor_proofArguments', 'required': ['sha256'], 'properties': {'note': {'anyOf': [{'type': 'string', 'maxLength': 160}, {'type': 'null'}], 'title': 'Note', 'default': None, 'description': 'Optional public note (max 160 characters), stored on the blockchain forever. No personal data, no secrets'}, 'sha256': {'type': 'string', 'title': 'Sha256', 'maxLength': 100, 'description': 'SHA-256 digest of the document, 64 hexadecimal characters, computed from the actual file. Never guess it and never send the document'}, 'filename': {'anyOf': [{'type': 'string', 'maxLength': 80}, {'type': 'null'}], 'title': 'Filename', 'default': None, 'description': 'Optional public file name (max 80 characters), stored forever. Only set it when the user explicitly wants the name public'}, 'reanchor_expired': {'type': 'boolean', 'title': 'Reanchor Expired', 'default': False, 'description': 'Only set to true when an earlier proof of this hash has expired and the user explicitly wants an additional, later registration. The original anchoring stays the proof time. The new registration adds a later timestamp and replaces the public note and holder of the name. Default false'}}}
Ausgabeschema
{'type': 'object', 'title': 'anchor_proofDictOutput', 'additionalProperties': True}
check_name_expiry
Check when names expire
Check up to 25 names at once: status (active, expiring_soon, expired, not_registered), blocks left, an
estimated expiry date for active names (from the measured block interval) and the real expiry date for
expired names. Names expire 36,000 blocks after their last update and are renewed by updating them from the
owning wallet.
Nur Lesen
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'title': 'check_name_expiryArguments', 'required': ['names'], 'properties': {'names': {'type': 'array', 'items': {'type': 'string'}, 'title': 'Names', 'maxItems': 25, 'minItems': 1, 'description': "Up to 25 full names, for example ['d/example', 'poe/<sha256>']"}, 'warn_days': {'type': 'integer', 'title': 'Warn Days', 'default': 30, 'maximum': 365, 'minimum': 1, 'description': 'Names expiring within this many days are flagged expiring_soon'}}}
Ausgabeschema
{'type': 'object', 'title': 'check_name_expiryDictOutput', 'additionalProperties': True}
check_proof
Check a proof of existence
Check whether a SHA-256 hash is anchored on the Doichain (name poe/<sha256>) and since when. Returns
status (confirmed, pending, expired, unknown) and at the top level block height, block time, transaction and links
of the first anchoring, which is the proof time. If the name was updated later or registered again after it
expired (possibly by someone else), that registration is reported separately in latest_registration with its own
holder and record, which are not part of the original proof. A confirmed or expired proof shows that a document
with exactly this hash existed no later than the block time, not who submitted it.
Nur Lesen
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'title': 'check_proofArguments', 'required': ['sha256'], 'properties': {'sha256': {'type': 'string', 'title': 'Sha256', 'maxLength': 100, 'description': 'SHA-256 digest of the document, 64 hexadecimal characters (a sha256: or 0x prefix is accepted)'}}}
Ausgabeschema
{'type': 'object', 'title': 'check_proofDictOutput', 'additionalProperties': True}
get_address
Address balance and history
Confirmed and unconfirmed balance of a Doichain address in DOI, optionally with its most recent
transactions. Invalid addresses return an error with the reason.
Nur Lesen
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'title': 'get_addressArguments', 'required': ['address'], 'properties': {'address': {'type': 'string', 'title': 'Address', 'maxLength': 100, 'minLength': 20, 'description': 'Doichain address (M... or N..., 6..., or bech32 dc1q...)'}, 'history_limit': {'type': 'integer', 'title': 'History Limit', 'default': 10, 'maximum': 50, 'minimum': 1, 'description': 'Number of recent transactions when include_history is true'}, 'include_history': {'type': 'boolean', 'title': 'Include History', 'default': False, 'description': 'Also return the most recent transactions'}}}
Ausgabeschema
{'type': 'object', 'title': 'get_addressDictOutput', 'additionalProperties': True}
get_anchoring_quota
Remaining anchoring quota
How many proofs can still be anchored today (UTC day) within the free public quota for the caller's IP
address. Hosted chat apps connect from their own servers, so their users share one quota. Callers that send
their own API key in the X-API-Key header have no quota.
Nur Lesen
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'title': 'get_anchoring_quotaArguments', 'properties': {}}
Ausgabeschema
{'type': 'object', 'title': 'get_anchoring_quotaDictOutput', 'additionalProperties': True}
get_block
Get a block
Header data of a block by height or hash: time, confirmations, number of transactions and the first 50
transaction IDs.
Nur Lesen
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'title': 'get_blockArguments', 'required': ['block'], 'properties': {'block': {'anyOf': [{'type': 'integer'}, {'type': 'string'}], 'title': 'Block', 'description': 'Block height (number) or block hash (64 hexadecimal characters)'}}}
Ausgabeschema
{'type': 'object', 'title': 'get_blockDictOutput', 'additionalProperties': True}
get_chain_status
Doichain network status
Current state of the Doichain network as seen by the node behind this server: block height, sync state,
time of the last block, fork check, node version, peers, mempool size and whether public anchoring is available.
Nur Lesen
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'title': 'get_chain_statusArguments', 'properties': {}}
Ausgabeschema
{'type': 'object', 'title': 'get_chain_statusDictOutput', 'additionalProperties': True}
get_name_history
History of a Doichain name
All registrations and updates of a name, newest first: block height, transaction, owner address and the
value at that time. Shows who held a name when, and every value it ever had.
Nur Lesen
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'title': 'get_name_historyArguments', 'required': ['name'], 'properties': {'name': {'type': 'string', 'title': 'Name', 'maxLength': 255, 'minLength': 1, 'description': 'Full name including namespace'}, 'limit': {'type': 'integer', 'title': 'Limit', 'default': 20, 'maximum': 100, 'minimum': 1, 'description': 'Maximum number of entries, newest first'}}}
Ausgabeschema
{'type': 'object', 'title': 'get_name_historyDictOutput', 'additionalProperties': True}
get_transaction
Get a transaction
A transaction with confirmations, block time, outputs (amount in DOI and address) and any name operation
(name_doi, name_update, ...) it contains.
Nur Lesen
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'title': 'get_transactionArguments', 'required': ['txid'], 'properties': {'txid': {'type': 'string', 'title': 'Txid', 'maxLength': 100, 'description': 'Transaction ID, 64 hexadecimal characters'}}}
Ausgabeschema
{'type': 'object', 'title': 'get_transactionDictOutput', 'additionalProperties': True}
hash_text
SHA-256 of a text
Compute the SHA-256 digest of a short text (UTF-8) on the server, for example to anchor a statement or a
message with anchor_proof. The text is sent to the server but not stored or logged. For files and for
confidential texts compute the hash locally instead (sha256sum file, or Get-FileHash -Algorithm SHA256).
Nur Lesen
Idempotent
Eingabeschema
{'type': 'object', 'title': 'hash_textArguments', 'required': ['text'], 'properties': {'text': {'type': 'string', 'title': 'Text', 'maxLength': 40000, 'description': 'Text to hash, encoded as UTF-8 exactly as given (whitespace and line breaks count), at most 40,000 characters'}}}
Ausgabeschema
{'type': 'object', 'title': 'hash_textDictOutput', 'additionalProperties': True}
lookup_name
Look up a Doichain name
Read the current value, owner address and expiry of a Doichain name. Unregistered names come back with
exists false and status not_registered (the name is free). Expired names have status expired and the real
expiry date.
Nur Lesen
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'title': 'lookup_nameArguments', 'required': ['name'], 'properties': {'name': {'type': 'string', 'title': 'Name', 'maxLength': 255, 'minLength': 1, 'description': 'Full name including namespace, for example poe/<sha256>, d/example or id/alice'}}}
Ausgabeschema
{'type': 'object', 'title': 'lookup_nameDictOutput', 'additionalProperties': True}
search_names
Search names by prefix
List names that start with a prefix, in the node's order (shorter names first, then byte order). Lists
only active names unless include_expired is true. Expired names (for example old poe/ proofs) stay in the chain
history and are listed with include_expired. Page through large results with next_after until exhausted is true.
Names and values are chosen by arbitrary users (name_untrusted, value_untrusted).
Nur Lesen
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'title': 'search_namesArguments', 'required': ['prefix'], 'properties': {'after': {'anyOf': [{'type': 'string', 'maxLength': 255}, {'type': 'null'}], 'title': 'After', 'default': None, 'description': 'Paging cursor: pass next_after from the previous result unchanged'}, 'limit': {'type': 'integer', 'title': 'Limit', 'default': 20, 'maximum': 100, 'minimum': 1, 'description': 'Maximum number of names'}, 'prefix': {'type': 'string', 'title': 'Prefix', 'maxLength': 255, 'minLength': 1, 'description': 'Name prefix, for example poe/, d/ or id/'}, 'include_expired': {'type': 'boolean', 'title': 'Include Expired', 'default': False, 'description': 'Also list expired names, for example proofs whose poe/ name has expired. Default false: active names only'}}}
Ausgabeschema
{'type': 'object', 'title': 'search_namesDictOutput', 'additionalProperties': True}
verify_message
Verify a signed message
Check whether a message was signed with the private key of a Doichain address (signmessage format).
Only legacy addresses (M... or N...) can sign messages, bech32 addresses (dc1q...) are not supported.
Useful to confirm that a statement really comes from the holder of an address.
Nur Lesen
Externer Zugriff
Idempotent
Eingabeschema
{'type': 'object', 'title': 'verify_messageArguments', 'required': ['address', 'message', 'signature'], 'properties': {'address': {'type': 'string', 'title': 'Address', 'maxLength': 100, 'minLength': 20, 'description': 'Legacy Doichain address (M... or N...) that supposedly signed the message'}, 'message': {'type': 'string', 'title': 'Message', 'maxLength': 10000, 'description': 'The exact signed text'}, 'signature': {'type': 'string', 'title': 'Signature', 'maxLength': 200, 'minLength': 20, 'description': 'Signature in Base64'}}}
Ausgabeschema
{'type': 'object', 'title': 'verify_messageDictOutput', 'additionalProperties': True}
Verlauf
Letzte Tool-Änderungen
Geändert
search_names
29. September 2026 02:48
Geändert
anchor_proof
29. September 2026 02:48
Geändert
check_proof
29. September 2026 02:48
Hinzugefügt
verify_message
27. September 2026 02:40
Hinzugefügt
get_address
27. September 2026 02:40
Hinzugefügt
get_transaction
27. September 2026 02:40
Hinzugefügt
get_block
27. September 2026 02:40
Hinzugefügt
search_names
27. September 2026 02:40
Hinzugefügt
check_name_expiry
27. September 2026 02:40
Hinzugefügt
get_name_history
27. September 2026 02:40
Hinzugefügt
lookup_name
27. September 2026 02:40
Hinzugefügt
get_anchoring_quota
27. September 2026 02:40
Hinzugefügt
anchor_proof
27. September 2026 02:40
Hinzugefügt
check_proof
27. September 2026 02:40
Hinzugefügt
hash_text
27. September 2026 02:40
Hinzugefügt
get_chain_status
27. September 2026 02:40
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