slm-compress

# slm-compress — Reversible Context Compression (Surface B) ## Purpose When a tool output, transcript, or accumulated context grows large enough to crowd out working space, `slm_compress` reduces it in-place. The compressed form is used for the remainder of the session; the exact original is recoverable on demand via `slm_retrieve`. This works without a proxy and without touching `ANTHROPIC_BASE_URL`, so the full 1M context window is never sacrificed. ## Primary MCP Tool: slm_compress ``` slm_compress( content: str, # required — text to compress (max 1 MB) mode: str = "auto", # "normalize" | "auto" | "aggressive" reversible: bool = True, # store original in CCR for later retrieval ttl_seconds: int = 86400, # CCR lifetime in seconds (default 24 h) ) -> dict ``` ### Return dict (all keys always present) | Key | Type | Meaning | |-----|------|---------| | `ok` | bool | `True` on success; `False` on internal error or empty input | | `compressed` | str | Compressed text (or original on failure) | | `strategy` | str | Which strategy was applied (e.g. `"normalize"`, `"none"`) | | `tokens_before` | int | Word-count estimate of the input | | `tokens_after` | int | Word-count estimate of the output | | `ratio` | float | `tokens_after / tokens_before` (lower = more compact) | | `lossy` | bool | Whether information was removed | | `ccr_id` | str \| None | UUID4 session token; present only when `lossy=True` and `reversible=True` | | `note`...