Caveman

Caveman is a set of tools you add to a coding agent you already use: compression of what the agent reads, measurement of what it spends, and written guidance on cutting the cost. Installation is a plugin or skill, and the pitch is deliberately unglamorous — keep the agent, change what it costs.

Grouping compression with measurement is the more useful half of the idea. Measuring first is what turns cost reduction from a vibe into an engineering task: agent bills are dominated by input tokens that nobody sees, because they are tool output and file contents rather than conversation, and a team that instruments that can find its own hot spots instead of applying a vendor's default. The caution is the same one that applies to every compression scheme here: the agent reasons over what it is given, so the question is never whether tokens fell but whether the compression dropped the detail the current task needed, and only your own evaluations answer that.