Base class for all insurance companies


Represents an insurance company in the world

Module Contents

class*args, **kwargs)[source]

Bases: negmas.situated.Agent, abc.ABC

Base class for all insurance companies

_respond_to_negotiation_request(initiator: str, partners: List[str], issues: List[negmas.outcomes.Issue], annotation: Dict[str, Any], mechanism: negmas.NegotiatorMechanismInterface, role: str | None, req_id: str | None) negmas.negotiators.Negotiator | None[source]

Called by the mechanism to ask for joining a negotiation. The agent can refuse by returning a None

  • initiator – The ID of the agent that initiated the negotiation request

  • partners – The partner list (will include this agent)

  • issues – The list of issues

  • annotation – Any annotation specific to this negotiation.

  • mechanism – The mechanism that started the negotiation

  • role – The role of this agent in the negotiation

  • req_id – The req_id passed to the AWI when starting the negotiation (only to the initiator).


None to refuse the negotiation or a Negotiator object appropriate to the given mechanism to accept it.


  • It is expected that world designers will introduce a better way to respond and override this function to call it

on_neg_request_rejected(req_id: str, by: List[str] | None)[source]

Called when a requested negotiation is rejected

  • req_id – The request ID passed to _request_negotiation

  • by – A list of agents that refused to participate or None if the failure was for another reason

on_neg_request_accepted(req_id: str, mechanism: negmas.NegotiatorMechanismInterface)[source]

Called when a requested negotiation is accepted

on_negotiation_failure(partners: List[str], annotation: Dict[str, Any], mechanism: negmas.NegotiatorMechanismInterface, state: negmas.MechanismState) None[source]

Called whenever a negotiation ends without agreement

on_negotiation_success(contract: negmas.situated.Contract, mechanism: negmas.NegotiatorMechanismInterface) None[source]

Called whenever a negotiation ends with agreement

on_contract_signed(contract: negmas.situated.Contract) None[source]

Called whenever a contract is signed by all partners

on_contract_cancelled(contract: negmas.situated.Contract, rejectors: List[str]) None[source]

Called whenever at least a partner did not sign the contract

sign_contract(contract: negmas.situated.Contract) str | None[source]

Called after the signing delay from contract conclusion to sign the contract. Contracts become binding only after they are signed.

respond_to_negotiation_request(initiator: str, partners: List[str], issues: List[negmas.outcomes.Issue], annotation: Dict[str, Any], mechanism: negmas.Mechanism, role: str | None, req_id: str) negmas.negotiators.Negotiator | None[source]
on_contract_breached(contract: negmas.situated.Contract, breaches: List[negmas.situated.Breach], resolution: negmas.situated.Contract | None) None[source]

Called after complete processing of a contract that involved a breach.

  • contract – The contract

  • breaches – All breaches committed (even if they were resolved)

  • resolution – The resolution contract if re-negotiation was successful. None if not.

on_contract_executed(contract: negmas.situated.Contract) None[source]

Called after successful contract execution for which the agent is one of the partners.

class float, premium_breach_increment: float, premium_time_increment: float, a2f: Dict[str, scml.scml2019.common.Factory], disabled=False, name: str = None)[source]

Bases: InsuranceCompany

Represents an insurance company in the world


Called to initialize the agent after the world is initialized. the AWI is accessible at this point.

set_renegotiation_agenda(contract: negmas.situated.Contract, breaches: List[negmas.situated.Breach]) negmas.situated.RenegotiationRequest | None[source]

Received by partners in ascending order of their total breach levels in order to set the renegotiation agenda when contract execution fails

  • contract – The contract being breached

  • breaches – All breaches on contract


Renegotiation agenda (issues to negotiate about to avoid reporting the breaches).

respond_to_renegotiation_request(contract: negmas.situated.Contract, breaches: List[negmas.situated.Breach], agenda: negmas.situated.RenegotiationRequest) negmas.negotiators.Negotiator | None[source]

Called to respond to a renegotiation request

  • agenda

  • contract

  • breaches


evaluate_insurance(contract: negmas.situated.Contract, insured: scml.scml2019.agent.SCML2019Agent, against: scml.scml2019.agent.SCML2019Agent, t: int = None) float | None[source]

Can be called to evaluate the premium for insuring the given contract against breaches committed by others

  • against – The SCML2019Agent to insure against

  • contract – hypothetical contract

  • insured – The SCML2019Agent to buy the insurance

  • t – time at which the policy is to be bought. If None, it means current step


  • The premium returned is relative to the contract price. To actually calculate the cost of buying this insurance, you need to multiply this by the contract value (quantity * unit_price).

buy_insurance(contract: negmas.situated.Contract, insured: scml.scml2019.agent.SCML2019Agent, against: scml.scml2019.agent.SCML2019Agent) scml.scml2019.common.InsurancePolicy | None[source]

Buys insurance for the contract at the premium calculated by the insurance company.


The agent can call evaluate_insurance to find the premium that will be used.

See also


is_insured(contract: negmas.situated.Contract, perpetrator: scml.scml2019.agent.SCML2019Agent) bool[source]
  • contract

  • perpetrator



does nothing