claudbg/.beans/claudbg-kg0v--tool-use-input-truncated-at-120-chars-regardless-o.md

---
# claudbg-kg0v
title: Tool use input truncated at 120 chars regardless of --verbose
status: completed
type: bug
priority: normal
created_at: 2026-03-30T04:44:31Z
updated_at: 2026-03-30T05:13:37Z
parent: claudbg-8vpb
---

## Problem

Tool use input (arguments passed to a tool) is hard-capped at 120 characters in transcriptions, cutting off commands mid-content:

```
[tool: Bash] {"command":"nix develop --command bash -c \"./target/debug/claudbg --help && echo '===' && ./target/debug/claudbg sessio
```

## Expected behavior

- Default: truncate at 120 chars (or a slightly higher value like 200) with a `…` indicator.
- `--verbose`: show full input, no truncation.

## Current behavior

Both `render_entry_text` implementations use a hardcoded 120-char cap regardless of `opts.verbose`:

```rust
// src/commands/sessions.rs:108-110
let input_preview = serde_json::to_string(input).unwrap_or_default();
let boundary = input_preview.floor_char_boundary(120);
let input_short = &input_preview[..boundary];
```

The `opts.verbose` flag is checked nowhere in the tool use branch.

## Fix

```rust
let cap = if opts.verbose { usize::MAX } else { 120 };
let boundary = input_preview.floor_char_boundary(cap);
```

Same change needed in `agents.rs`.

## Relevant files

- `src/commands/sessions.rs` — `render_entry_text`, `ToolUse` branch (~lines 107–111)
- `src/commands/agents.rs` — `render_entry_text`, `ToolUse` branch (~lines 68–72)

## Summary of Changes

In sessions.rs and agents.rs render_entry_text ToolUse branch: replaced hardcoded 120-char cap with cap=usize::MAX when opts.verbose, 120 otherwise. Added ellipsis indicator when content is actually truncated.