> For the complete documentation index, see [llms.txt](https://docs.stackai.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.stackai.com/technical-reference/models-agents-and-skills.md).

# Models, Agents, and Skills

Understand model inputs, tool use, memory, and reusable skills. These references explain how configuration affects the context and operations available to an agent.

* [Model Settings and Supported Capabilities](/technical-reference/models-agents-and-skills/model-settings-and-supported-capabilities.md)
* [Instructions, Context, and Token Limits](/technical-reference/models-agents-and-skills/instructions-context-and-token-limits.md)
* [Structured Outputs and Schema Validation](/technical-reference/models-agents-and-skills/structured-outputs-and-schema-validation.md)
* [Tool Selection and Argument Validation](/technical-reference/models-agents-and-skills/tool-selection-and-argument-validation.md)
* [Tool Results, Errors, and Agent Continuation](/technical-reference/models-agents-and-skills/tool-results-errors-and-agent-continuation.md)
* [Agent Execution Limits and Stop Conditions](/technical-reference/models-agents-and-skills/agent-execution-limits-and-stop-conditions.md)
* [Conversation Memory and Context Windows](/technical-reference/models-agents-and-skills/conversation-memory-and-context-windows.md)
* [Memory Isolation Across Users and Workflows](/technical-reference/models-agents-and-skills/memory-isolation-across-users-and-workflows.md)
* [Memory Reset and Persistence](/technical-reference/models-agents-and-skills/memory-reset-and-persistence.md)
* [Skill Instructions, Files, and Action References](/technical-reference/models-agents-and-skills/skill-instructions-files-and-action-references.md)
* [Skill Validation, Versions, and Rollback](/technical-reference/models-agents-and-skills/skill-validation-versions-and-rollback.md)


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