Using elaborate ethnographic fieldwork in lowland Peru, this paper explores linguistic resources employed for coding conventions in Alto Perené (Arawak) conversation. The inquiry uses the anthropological tradition of conversation analysis-animated ethnographies. The examination of agreeing replies is restricted to those which admit a projectedly ‘knowing’, or K-plus, participant to increase his or her epistemic status from the sequentially second position. It is displayed that Alto Perené K-plus reply formats cover the evaluative possession word kametsari ‘good’ with an intensifier and/or upgraded prosody, argument focus structures, two polarity verbs ari ‘it is the case’ and omapero ‘it is true’, and the verb ñakiro ‘as you can see’. This assay shows a link between the Alto Perené practices of voicing K-plus conventions and the collateral effects emerging from the special meanings and functions of structures which are employed for achieving an agreeing action.