UNCITRAL · 2024, with Guide to Enactment
UNCITRAL Model Law on Automated Contracting
A legislative model addressing automated contracting, including recognition and attribution of automated outputs. It supplements contract law; it is not automatically enacted law or a complete contract code.
External reference material. This text has not been adopted merely by being made available here. Article references are printed in the source; page links open the publisher’s PDF. The complete extracted text also preserves preambles, chapter headings, footnotes and annexes within the operative pages.
Article index
Article 1 · model-law
Publisher PDF page 13Article 1. Definitions
1. For the purposes of this Law:
(a) “Automated system” means a computer system that is capable of carrying
out actions without the necessary review or intervention of a natural person;
(b) “Data message” means information generated, sent, received or stored by
electronic, magnetic, optical or similar means.
2. An automated system may be programmed to operate in a deterministic or
non-deterministic manner.
Article 2 · model-law
Publisher PDF page 13Article 2. Scope of application
1. This Law applies to the use of automated systems to form or to perform con-
tracts, including by:
(a) Generating or otherwise processing data messages that constitute an action
in connection with the formation of contracts, such as an offer or acceptance of an
offer;
(b) Generating or otherwise processing data messages that constitute an action
in connection with the performance of a contract, such as its modification or
termination.
2. Nothing in this Law affects the application of any rule of law that may govern
the design, commissioning, operation or use of automated systems.
Article 3 · model-law
Publisher PDF page 14Article 3. Interpretation
1. In the interpretation of this Law, regard is to be had to its international origin
and to the need to promote uniformity in its application and the observance of
good faith.
2. Questions concerning matters governed by this Law which are not expressly
settled in it are to be settled in conformity with the general principles on which
this Law is based.
Article 4 · model-law
Publisher PDF page 14Article 4. Technology neutrality
Nothing in this Law requires the use of an automated system or a particular method
in automated systems to form or perform contracts.
Article 5 · model-law
Publisher PDF page 14Article 5. Legal recognition of automated contracting
1. A contract formed using an automated system shall not be denied validity or
enforceability on the sole ground that no natural person reviewed or intervened
in any action carried out in connection with the formation of the contract.
[2. A contract performed using an automated system shall not be denied validity
or enforceability on the sole ground that no natural person reviewed or intervened
in any action carried out in connection with the performance of the contract.]1
3. An action carried out by an automated system in connection with the forma-
tion or performance of a contract shall not be denied legal effect, validity or
enforceability on the sole ground that no natural person reviewed or intervened
in the action.
Article 6 · model-law
Publisher PDF page 14Article 6. Legal recognition of contracts in computer
code and use of dynamic information in automated
contracting
1. A contract shall not be denied validity or enforceability on the sole ground
that the terms of the contract are contained in data messages in the form of com-
puter code.
States that wish to extend the scope of article 5 to cover contracts that are performed using an automated
system may wish to enact this provision.
2. A contract shall not be denied validity or enforceability on the sole ground
that the terms of the contract incorporate information from a data source that
provides information that changes periodically or continuously.
3. An action in connection with the formation of a contract shall not be denied
legal effect, validity or enforceability on the sole ground that the action involves
processing data messages containing information from a source that provides infor-
mation that changes periodically or continuously.
Article 7 · model-law
Publisher PDF page 15Article 7. Attribution of actions carried out by
automated systems
1. As between the parties to a contract, an action carried out by an automated
system is attributed in accordance with a procedure agreed to by the parties.
2. If paragraph 1 does not apply, an action carried out by an automated system
is attributed to the person who uses the system for that purpose.
3. Attribution of an action carried out by an automated system shall not be
denied on the sole ground that the outcome was unexpected.
4. Nothing in this article affects the application of any rule of law that may govern
the legal consequences of attributing an action carried out by an automated system
to a person.
Article 8 · model-law
Publisher PDF page 15[Article 8. Unexpected actions carried out by
automated systems
1. Unless otherwise agreed by the parties, where an action carried out by an
automated system is attributed to a party to a contract, the other party to the
contract is not entitled to rely on that action if, in the light of all the
circumstances:
(a) The party to which the action is attributed could not reasonably have
expected the action; and
(b) The other party knew or could reasonably be expected to have known that
the party to which the action is attributed did not expect the action.
2. Nothing in this article affects the application of any rule of law or agreement
of the parties that may govern the legal consequences of an action carried out by
an automated system.]2
Article 9 · model-law
Publisher PDF page 16Article 9. Information requirements
Nothing in this Law affects the application of any rule of law that may require a
person to disclose information on the design, operation or use of an automated
system, or provides legal consequences for failing to do so or for disclosing inac-
curate, incomplete or false information.
Article 10 · model-law
Publisher PDF page 16Article 10. Non-avoidance
Unless otherwise provided by law, a party shall not be relieved from the legal
consequences of its failure to comply with a rule of law on the sole ground that it
used an automated system.
This provision is included for States wishing to enact one or more specific provisions addressing unexpected
actions carried out by automated systems.
Official legal text published by UNCITRAL; publisher terms apply. Peregrini's CC BY licence does not relicense this source.