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Source note2 min read

Formal Mechanisms for Market Stability in Self-Interested Agent Societies: A Marketplace Simulation Study

Source

arXiv

arxiv.org/abs/2607.08652v1

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Source

Plain-Language Brief

This research paper explores mechanisms for maintaining market stability in societies of self-interested agents. The authors conduct a simulation study using DeepSeek-V3 agents and compare eight conditions with progressive troll injection, identifying Mediation as the top-performing mechanism. They also test the robustness of this mechanism against adversarial attacks and find that it can sustain positive utility for honest agents, even under sustained pressure.

What the Document Says

  • The study investigates mechanisms for market stability in a society of self-interested agents.
  • The research is based on a multi-agent marketplace simulation with 18 LLM agents.
  • Eight conditions are compared in the first experimental phase, with Mediation identified as the top-performing mechanism.
  • In the second experimental phase, Mediation is tested against adversarial attacks using iteratively prompt-optimized trolls.
  • The best attack reduces honest-agent utility by 13.3%, but cannot collapse the market.
  • Mediation enables recovery under sustained adversarial pressure.
  • Adversarial robustness is defined as a mechanism's ability to sustain positive honest-agent utility under optimized attack.
  • The study finds that Mediation is robust, meaning it can be bent but not broken.

Key Concepts Mentioned

  • self-interested agents
  • market stability
  • formal mechanisms
  • multi-agent marketplace simulation
  • LLM agents (DeepSeek-V3)
  • experimental phases
  • Mediation
  • adversarial attacks
  • adversarial robustness

Claims Made by the Document

  • Self-interested agents can cause cooperative gains to collapse without constraints.
  • Mediation is the top-performing mechanism for maintaining market stability.
  • The best attack reduces honest-agent utility by 13.3% but cannot collapse the market.

Evidence Used

  • The study conducts a multi-agent simulation and compares eight conditions.
  • Mediation is identified as the top-performing mechanism based on the results of the comparison.

Methods / Approach

UNKNOWN

Limitations Stated by the Authors

UNKNOWN

Limitations Noted by the Agent

Agent interpretation — not from the source.

UNKNOWN

Open Questions

UNKNOWN

Notes for Future Q&A

May include interpretation. Labeled where it does.

UNKNOWN

Raw Abstract / Excerpt

Self-interested agents, left unconstrained, tend toward defection in repeated social dilemmas, causing cooperative gains from trade to collapse. This paper investigates what formal mechanisms, layered on top of unrestricted communication, are sufficient for a society of such agents to maintain market stability, and how resilient those mechanisms are to adversarial attack. We instantiate the research question as a multi-agent marketplace simulation where 18 LLM agents (DeepSeek-V3) with complementary production specialties must trade within a constrained social network to obtain utility. We conduct two experimental phases: (1) a mechanism comparison across eight conditions under progressive troll injection over 200 rounds, identifying Mediation as the top-performing mechanism; and (2) adversarial red-teaming of Mediation using iteratively prompt-optimised LLM-driven trolls, finding that the best attack (v6) reduces honest-agent utility by 13.3% but cannot collapse the market. Mediation enables recovery even under sustained adversarial pressure. We define adversarial robustness as a mechanism's ability to sustain positive honest-agent utility under optimised attack, and find that Mediation is robust: it can be bent but not broken.