Token Optimizer MCP
Compression that optimises your bill, not your byte count — and ships the benchmark so you can check it.
One local ledger for optimizer tools, live-graph substitutions, every agent, and the graph's own cost.
How it compares to HeadRoom
Providers cache the prompt prefix: cached tokens re-read at 0.1x, rewritten ones bill at 1.25x. Most compressors optimise bytes removed and ignore that multiplier. This one optimises the bill.
Measured against their real implementation, on their own fixtures. Not a reimplementation and not our fixtures: their harness compresses the payload, dumps it, their resolver redeems their own markers, and ours is handed the identical bytes. Their column is the best of the nine configurations that capture holds, row by row.
Two of our arms are in the table, and they answer different questions. ours
is the block engine with nowhere to move a block, which is how the MCP tools and
the hooks run: everything it removes, it removes by compressing, and nothing
leaves the request. ours, proxy is the proxy a Claude Code session runs
through, which also moves a block it could not compress out to a file and
leaves a marker naming the path -- the same kind of trade their content-cache
reference makes. ours, preset is the block engine with that move switched on
at spillWholeBlockBelow: 0.9.
