nonbinary.computer
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oppi.li/claude-code
source dump of claude code
oppi.li
1/**
2 * Constants related to tool result size limits
3 */
4
5/**
6 * Default maximum size in characters for tool results before they get persisted
7 * to disk. When exceeded, the result is saved to a file and the model receives
8 * a preview with the file path instead of the full content.
9 *
10 * Individual tools may declare a lower maxResultSizeChars, but this constant
11 * acts as a system-wide cap regardless of what tools declare.
12 */
13export const DEFAULT_MAX_RESULT_SIZE_CHARS = 50_000
14
15/**
16 * Maximum size for tool results in tokens.
17 * Based on analysis of tool result sizes, we set this to a reasonable upper bound
18 * to prevent excessively large tool results from consuming too much context.
19 *
20 * This is approximately 400KB of text (assuming ~4 bytes per token).
21 */
22export const MAX_TOOL_RESULT_TOKENS = 100_000
23
24/**
25 * Bytes per token estimate for calculating token count from byte size.
26 * This is a conservative estimate - actual token count may vary.
27 */
28export const BYTES_PER_TOKEN = 4
29
30/**
31 * Maximum size for tool results in bytes (derived from token limit).
32 */
33export const MAX_TOOL_RESULT_BYTES = MAX_TOOL_RESULT_TOKENS * BYTES_PER_TOKEN
34
35/**
36 * Default maximum aggregate size in characters for tool_result blocks within
37 * a SINGLE user message (one turn's batch of parallel tool results). When a
38 * message's blocks together exceed this, the largest blocks in that message
39 * are persisted to disk and replaced with previews until under budget.
40 * Messages are evaluated independently — a 150K result in one turn and a
41 * 150K result in the next are both untouched.
42 *
43 * This prevents N parallel tools from each hitting the per-tool max and
44 * collectively producing e.g. 10 × 40K = 400K in one turn's user message.
45 *
46 * Overridable at runtime via GrowthBook flag tengu_hawthorn_window — see
47 * getPerMessageBudgetLimit() in toolResultStorage.ts.
48 */
49export const MAX_TOOL_RESULTS_PER_MESSAGE_CHARS = 200_000
50
51/**
52 * Maximum character length for tool summary strings in compact views.
53 * Used by getToolUseSummary() implementations to truncate long inputs
54 * for display in grouped agent rendering.
55 */
56export const TOOL_SUMMARY_MAX_LENGTH = 50