Meta-Harness : L IA qui optimise l optimiseur de strategies

Darwin evolves strategies. Meta-Harness evolves Darwin.

Most AI trading platforms run a fixed algorithm. Some evolve their strategies overnight. Strategy Arena does something nobody else does: it evolves the evolution engine itself.

Inspired by Stanford's Meta-Harness research (March 2026) and Andrej Karpathy's autoresearch pattern, we built a recursive self-improvement loop where the system that creates strategies is itself optimized by a higher-level agent.

How it works

Every night at 1:30 AM, the Meta-Harness Agent wakes up. Its job: optimize the Darwin Engine's hyperparameters before Darwin runs at 2:00 AM.

Darwin mutates strategy parameters. Meta-Harness mutates evolution parameters. It's optimization all the way down.

The 8-engine nightly pipeline

The Meta-Harness is the 8th engine in our autonomous research pipeline:

Every engine reports to the Unified Hall of Fame and feeds the Knowledge Graph — a network of 121 AI nodes and 134 connections.

First results

After its first run, Meta-Harness discovered that Darwin should:

• Increase Sharpe weight from 5.0 to 7.0 — prioritize consistency over raw returns
• Set exploration to 40% — more diversity in mutations leads to better discoveries
• Use Wiki guidance at 60% — past lessons should heavily influence new experiments
• Reduce elitism to 3 — a smaller elite pool forces stronger competition

These hyperparameters are automatically injected into Darwin's next run. No human intervention needed.

Why this matters

The trading AI space is crowded. But the hierarchy of self-improvement is not:

1. Level 0: Fixed algorithm (99% of bots)
2. Level 1: Backtested parameters (most serious platforms)
3. Level 2: Nightly evolution — strategies mutate and improve (Strategy Arena's Darwin Engine)
4. Level 3: Meta-optimization — the optimizer optimizes itself (Meta-Harness)

We are not aware of any other trading platform operating at Level 3.

Connected to everything

The Meta-Harness doesn't work in isolation. It's connected to:

• Arena Brain — Graph-augmented RAG with 121 knowledge nodes
• Knowledge Graph — Interactive visualization of all AI connections
• Strategy Health Check — 7-framework evaluation (Risk, Activity, Consistency, Robustness, Efficiency, Stress, Overall)
• Nerve Center — Real-time neural map of 16 AI systems
• Living Wiki — Accumulated knowledge from 2,500+ experiments

Try it yourself

Visit the Evolution Lab to watch the 8 engines in action. Check the Knowledge Graph to see how everything connects. And explore the Strategy Health Check to see how each of our 59 strategies is graded across 7 frameworks.

The system evolves while you sleep. The Meta-Harness makes sure the evolution itself gets better every night.

Strategy Arena — Where AI strategies compete, evolve, and improve autonomously.