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agentdb-learn

Train one of AgentDB's 9 RL algorithms on a stream of episodes. Use when the user has accumulated successful/failed episodes and wants to derive a policy, or when a task type is repeated enough to benefit from RL routing.

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SKILL.md (original)

Review the instructions the agent will receive before you install.

Learn

Train an RL agent on episode data to derive a policy.

When to use

  • Repeated task type with measurable reward and 50+ episodes
  • User asks to "train", "build a policy", "make it learn"
  • Pre-deployment of an autonomous agent that should pick actions itself

Algorithms (the bandit picks the right one)

AlgoBest for
Q-LearningTabular state-spaces, discrete actions
SARSAOn-policy variant, conservative exploration
DQNHigh-dimensional state, neural Q-fn
PPOContinuous control, high-dim action
Actor-CriticBaseline reduction, stable training
Policy GradientDirect policy parameterization
Decision TransformerOffline RL on trajectories
MCTSTree-search planning under known dynamics
Model-Based RLSample-efficient when env model is learnable

If you don't know which to pick, call agentdb_learning_route first — the bandit suggests one based on past performance on similar task signatures.

API

agentdb_learning_train(
  algorithm:   <one of above>           // or 'auto' to let bandit pick
  episodes:    [<episodeId>, ...]       // or task name → fetch automatically
  hyperparams: { lr, gamma, epsilon, ... }
  iterations:  N
)

After training

  1. The bandit logs the resulting reward distribution on the chosen algorithm.
  2. The trained model is stored in the AgentDB skill library as a callable skill.
  3. Future calls to agentdb_learning_route(task) may pick this trained skill if it scores well.

Don't

  • Don't train on < 50 episodes — high-variance models overfit.
  • Don't train multiple algorithms in parallel "to see which wins" — that's the bandit's job, and parallel training pollutes the reward signal.
  • Don't ignore the route output. If agentdb_learning_route says "no algorithm has > 0.6 expected reward on this task", the answer is to gather more episodes, not to force-train.

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