Scientific Definition
Models calling external functions and APIs.
Plain-English Definition
Models calling external functions and APIs.
Feynman Explanation
Models without tools talk. Models with tools act.
Core Principle
Models calling external functions and APIs.
Mechanisms
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Inputs (Triggers)
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Outputs (Behaviors)
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Behavioral Signature
Models without tools talk. Models with tools act.
Examples
- Function calling, code execution, web search.
- Foundation of agent capability.
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Famous Experiments
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Design Principles
- Sandbox tools. Audit calls. Rate limit.
Measurement Approaches
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Evidence
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The Perverse Incentive Lens™
How this behavior is exploited — and how to redesign around it.
- Sandbox tools. Audit calls. Rate limit.
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Interactive Mini Network
Click any neighbor to re-center the graph and follow the threads of connection.
Knowledge Graph Neighbors
Auto-linked to the rest of the Human Behavior Taxonomy by family, domain, dimension, and shared keywords.
AI system that takes actions to achieve goals, often across tools.
Designing processes from scratch around AI capability.
The relationship between inputs and outputs changes.
How much input the model can process at once.
Underlying data distribution changes over time.
Vector representation of content for similarity and search.
Evaluation suites that no longer reflect real-world conditions.
Systematic testing of model quality, safety, and capability.
Models learning from examples in the prompt.
How much delay the user experience tolerates.
Train a smaller model to imitate a larger one.
Performance degradation as real-world data shifts.