Constitutes the refereed post-proceedings of the 6th International Workshop on Computational Logic for Multi-Agent Systems, CLIMA VI. This book presents papers that are organized in topical sections on foundational aspects of agency, agent programming, agent interaction and normative systems, and on the project report of the SOCS project.

The Logical Way to Be Artificially Intelligent.- The Logical Way to Be Artificially Intelligent.- Foundational Aspects of Agency.- Ability in a Multi-agent Context: A Model in the Situation Calculus.- Reasoning About Epistemic States of Agents by Modal Logic Programming.- Strongly Complete Axiomatizations of “Knowing at Most” in Syntactic Structures.- Logical Spaces in Multi-agent Only Knowing Systems.- Trustworthiness by Default.- Decision Procedure for a Fragment of Mutual Belief Logic with Quantified Agent Variables.- Agent Programming.- Implementing Temporal Logics: Tools for Execution and Proof.- BDI Agent Programming in AgentSpeak Using Jason.- Using the KGP Model of Agency to Design Applications.- Multi-threaded Communicating Agents in Qu-Prolog.- Variety of Behaviours Through Profiles in Logic-Based Agents.- Contract-Related Agents.- Agent Interaction and Normative Systems.- Specification and Verification of Agent Interaction Using Abductive Reasoning.- Verification of Protocol Conformance and Agent Interoperability.- Contextual Terminologies.- Constitutive Norms in the Design of Normative Multiagent Systems.- Combining Answer Sets of Nonmonotonic Logic Programs.- Speculative Constraint Processing with Iterative Revision for Disjunctive Answers.- Intention Recognition in the Situation Calculus and Probability Theory Frameworks.- The First CLIMA Contest.- The First Contest on Multi-agent Systems Based on Computational Logic.- Implementing Pheromone-Based, Negotiating Forager Agents.- Extending Tropos for a Prolog Implementation: A Case Study Using the Food Collecting Agent Problem.- Reactive Food Gathering.- Strategies for Multi-agent Coordination in a Grid World Using Petri Nets.- Project Report.- Multi-agent Systems in Computational Logic: Challenges andOutcomes of the SOCS Project.