LivingAgents.ai: A Web-Based AI Agent Simulation Using Claude API
What is LivingAgents.ai?
LivingAgents.ai is a web-based simulation created by a developer who built it using Claude Code. The project uses the Claude API to power autonomous agents in a simulated environment where they exhibit emergent behaviors without scripting.
Key Features and Mechanics
- Every agent in the simulation is powered by the Claude API (with potential for other models in the future).
- Agents perform actions including foraging, trading, crafting, attacking each other, reproducing, and dying permanently.
- Every single action in the simulation requires a real LLM call to the Claude API.
- Agents can upgrade through model tiers by collecting knowledge fragments to become more "intelligent."
- The simulation requires users to bring their own API key.
Emergent Behaviors Observed
The developer reports that agents exhibit surprising emergent behaviors that were not scripted:
- Agents lie to each other
- They spread misinformation
- They form factions and groups
- One group essentially became a cult
- These behaviors emerge when self-interested AI agents are placed in a resource-scarce world
Technical Details
The developer built the simulation with Claude Code and uses the Claude API. They mention being available to answer questions about:
- How agent memory works
- What mechanics are available in-game
- How the LLM calls are structured
- Other technical aspects of the implementation
📖 Read the full source: r/ClaudeAI
👀 See Also
ATLAS: Adaptive Test-time Learning Framework Outperforms Claude Sonnet on Coding Benchmarks with $500 GPU
ATLAS achieves 74.6% pass@1-v(k=3) on LiveCodeBench with a frozen 14B model on a single consumer GPU, outperforming Claude 4.5 Sonnet's 71.4% at a fraction of the cost using constraint-driven generation and self-verified iterative refinement.
Multi-Agent Trading Council System Using GPT-5.1 and Claude 4.6
A developer built a multi-agent trading system using ZagiHQ for orchestration with three parallel data-gathering agents and three LLMs (GPT-5.1, Claude 4.6 Opus, Claude 4.6 Sonnet) that must agree on trades. The system filters out setups through disagreement and requires manual approval.
docvault: Generate Local API Docs to Reduce AI Hallucinations
docvault is a tool that generates markdown API references from source code to help Claude and other LLMs stop hallucinating function signatures. It works for Rust crates and Python packages, outputs a two-tier markdown file, and includes a Claude Code plugin for hands-free operation.
Claude Code v2.1.238: keybindingFlavor, headersHelper, self-hosted runner fixes
Claude Code v2.1.238 adds keybindingFlavor=readline for Ctrl+W, headersHelper for plugin marketplaces, self-hosted runner flags for shutdown and proxy auth, plus numerous fixes.