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The Definition tab shows the System Prompt captured for the currently selected version, with raw/formatted view toggles, a copy button, and a diff view against the previous version. Alongside it, the Tools card lists every tool the agent called during that version’s traces - name, description, and JSON schema, captured directly from gen_ai.tool.* / function-call attributes, or a “schema not captured” placeholder if the schema wasn’t emitted. Because both cards are captured from live trace data rather than a static registry, the system prompt and tool list always match what the agent actually ran - not a hand-maintained description of it. If an agent hasn’t emitted gen_ai.system_instructions or tool definitions yet, both cards show an empty state explaining what’s missing.

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Version scoping

Definition always shows one specific version’s snapshot - whichever is selected in the header, or the latest version if you haven’t picked one. It never shows aggregate or all-versions data, since a system prompt and tool list only make sense as a single point-in-time capture.

Versioning

How versions are fingerprinted, and how selecting one scopes every tab