Health check — returns pong and the server version.

Compress a payload (JSON / code / prose) into a token-cheap skeleton. The exact original is stored locally and recoverable via knitbrain_retrieve using the returned ⟨ccr:hash⟩. Returns the original unchanged if compression wouldn't help.

Retrieve the exact original bytes for a ⟨ccr:hash⟩ handle produced by compression. Use when a skeleton isn't enough and you need the precise content.

Record a non-obvious project learning (summary + lesson + tags) for future sessions.

Search project learnings; returns ranked headlines (id + summary). Call knitbrain_get_learning for a full lesson.

Fetch the full lesson for a learning id (from knitbrain_search_learnings).

Save session handoff state so the next session can resume.

Load the prior handoff + top recent learnings to resume work. Resets the context meter for the new session.

Token-window meter: how full the context is, tokens saved by optimization, and whether it's time to save a handoff and clear the session.

Scan the project and (re)build the import/export knowledge graph.

What a file imports (module specifiers + names).

What a file exports.

Which files import the given file (blast radius before editing).

Classify a task into a tier (inquiry/trivial/standard/complex) with phases + plan-mode signal. Follow the returned plan.

Compression telemetry: CCR tier counts + per-kind retrieval rates (TOIN self-tuning).

Auto-detect project-specific agent proposals from the knowledge graph (domains + guardrails). Review/edit, then create with knitbrain_create_agent.

Generate a project-specific subagent (.claude/agents/.md) with 4 guardrails: file scope, allowed-tools, optional review gate, context budget.

Post a finding to the shared team board (stored compressed; full original recoverable).

Read the shared team board — compressed skeletons of every posting (cheap to scan; fetch full with knitbrain_team_get).

Fetch the full original of a board posting by id.

Clear the shared team board (CCR originals are retained until tiered out).