Reduce prompt size while preserving message structure and tool-call validity (pair-safe, fence-aware). Returns the minified messages plus token counts. Lossy by default (distill + tool-result compression); disable stages via the SLIMTOKEN_MINIFY_* env knobs.

Count tokens in a request body using the real cl100k_base tokenizer (bundled, offline). Returns total + per-message breakdown. The model arg is accepted for forward-compat but the count is cl100k-approximate for non-cl100k models.

RAG-style context pruning for a memory/conversation store: strip low-value text, retrieve warm entries relevant to a query, sliding-window summarize old turns, and enforce a token budget. Returns a ready-to-inject / prompt block.

Compress a large tool_result content block using type detection (directory listing, git output, logs, JSON, source). LOSSY — emits a compact representation plus a [slimtoken-compressed] metadata header. Pair-safe by construction (only the content field changes).

Read-only token-budget inspection: counts system/tools/messages, reports headroom against a token_budget, and whether the pair-safe pruner would drop any leading messages. Does not modify the body.

Return the slimtoken config in use: the always-on MinifyConfig built from SLIMTOKEN_* env knobs (the single config surface shared by the proxy, CLI, and MCP server). Useful to see what slimtoken will do.

List recommended local-model presets by GPU VRAM tier (4/8/16GB), each with a usable context. With measure=true, enriches each row with the live measured token reduction on a bloated payload (run by the pipeline itself).

High-context VRAM-tier configs (dense AND MoE) showing how slimtoken compression expands the effective context window. Each row gives the largest nominal context that fits fully in VRAM (computed by config_optimizer, q4_0 KV, flash attn, full offload) and the effective raw-token capacity = nominal_ctx / (1 - reduction). Use best=true for just the largest-effective-context preset of a tier.