feat(cli): /debug-tool-call to inspect the last tool call#205
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emal-avala merged 1 commit intomainfrom Apr 23, 2026
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feat(cli): /debug-tool-call to inspect the last tool call#205emal-avala merged 1 commit intomainfrom
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Walks the conversation history, pairs tool_use blocks with their matching tool_result, and prints the most recent call's tool name, id, input, and result. Useful for debugging when the agent misbehaves and you want to see exactly what it invoked. Usage: /debug-tool-call inspect the most recent call /debug-tool-call 2 inspect the 2nd-most-recent call /debug-tool-call list list the last 10 calls /debug-tool-call full show untrimmed input/result Aliases: /dtc, /last-tool
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Summary
/debug-tool-call(aliases/dtc,/last-tool) — inspect the most recent tool invocation in the session.tool_useblock with its matchingtool_result, rendering name, id, JSON input, and result (with error flag)./debug-tool-call <N>for Nth-most-recent,/debug-tool-call listfor the last 10, and/debug-tool-call fullto disable output truncation.Why
When a tool call misbehaves — wrong args, surprising result — the user currently has no quick way to see exactly what the model sent and what came back. This command reads straight from the session's message log, so it works for the current session and any resumed session.
Test plan
cargo clippy -p agent-code --all-targets -- -D warningscargo clippy -p agent-code-lib --all-targets -- -D warningscargo test -p agent-code --bin agent(92 passed)collect_tool_calls_pairs_use_with_resultcollect_tool_calls_empty_session_returns_emptycollect_tool_calls_marks_error_flagclip_for_display_shortens_long_textclip_for_display_passes_short_text_through