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The bench cache command helps manage OpenBench’s caches, particularly for LiveMCPBench. It provides tools to inspect, list, and clear cached data stored under ~/.openbench.

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Overview

Currently, LiveMCPBench is the primary evaluation that uses caching. It stores:
  • Embedding indexes for LiveMCPTool
  • Annotated task data
  • Other evaluation assets

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Subcommands

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info

Display cache information and storage sizes: 
bench cache info
Shows total cache size and breakdown by evaluation or component.

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ls

List cache contents with various viewing options: 

# List all cache contents  
bench cache ls

# List specific cache with tree view
bench cache ls --type livemcpbench --tree

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clear

Remove cached data with flexible targeting: 
# Clear specific cache completely
bench cache clear --type livemcpbench

# Clear subdirectory of specific cache
bench cache clear --type livemcpbench --path logs

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Cache Location

All cache data is stored under ~/.openbench/ in your home directory. This location is consistent across different evaluations and provides centralized cache management.