FIPA Accept Proposal Communicative Act Specification


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FIPA Accept Proposal Communicative Act Specification

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Date of this status





Change history


Deprecated by FIPA00037


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© 2000 Foundation for Intelligent Physical Agents -

Geneva, Switzerland


Use of the technologies described in this specification may infringe patents, copyrights or other intellectual property rights of FIPA Members and non-members. Nothing in this specification should be construed as granting permission to use any of the technologies described. Anyone planning to make use of technology covered by the intellectual property rights of others should first obtain permission from the holder(s) of the rights. FIPA strongly encourages anyone implementing any part of this specification to determine first whether part(s) sought to be implemented are covered by the intellectual property of others, and, if so, to obtain appropriate licenses or other permission from the holder(s) of such intellectual property prior to implementation. This specification is subject to change without notice. Neither FIPA nor any of its Members accept any responsibility whatsoever for damages or liability, direct or consequential, which may result from the use of this specification.


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1     Scope. 1

2     Accept Proposal2

3     References. 3

1         Scope

This document specifies the Accept Proposal communicative act that is compliant to [FIPA00037] requirements.



2         Accept Proposal


The action of accepting a previously submitted proposal to perform an action.


A tuple, consisting of an action expression denoting the action to be done, and a proposition giving the conditions of the agreement.


Accept-proposal is a general-purpose acceptance of a proposal that was previously submitted typically through a propose act (see [FIPA00051]). The agent sending the acceptance informs the receiver that it intends that (at some point in the future) the receiving agent will perform the action, once the given precondition is, or becomes, true.


The proposition given as part of the acceptance indicates the preconditions that the agent is attaching to the acceptance. A typical use of this is to finalise the details of a deal in some protocol. For example, a previous offer to “hold a meeting anytime on Tuesday” might be accepted with an additional condition that the time of the meeting is 11.00.


Note for future extension: an agent may intend that an action becomes done without necessarily intending the precondition. For example, during negotiation about a given task, the negotiating parties may not unequivocally intend their opening bids: agent a may bid a price p as a precondition, but be prepared to accept price p'.

Formal Model

<i, accept-proposal(j, <j, act>, f))>º

  <i, inform(j, Ii Done(<j, act>, f))>

    FP: Bi aÙØBi (Bifj aÚ Uifj a)

    RE: Bj a




    a = Ii Done(<j, act>, f)


Agent i informs j that it accepts an offer from j to stream a given multimedia title to channel 19 when the customer is ready. Agent i will inform (see [FIPA00046]) j of this fact when appropriate:


  :sender i
  :receiver j
  :in-reply-to bid089
    ((action j (stream-content movie1234 19))
      (B j (ready customer78)))
  :language FIPA-SL)


3         References

[FIPA00037]      FIPA Communicative Act Library Specification. Foundation for Intelligent Physical Agents, 2000.

[FIPA00046]      FIPA Inform Communicative Act Specification. Foundation for Intelligent Physical Agents, 2000.

[FIPA00051]      FIPA Propose Communicative Act Specification. Foundation for Intelligent Physical Agents, 2000.