Ingest a trusted local media file from the active host project or an explicitly configured media root. Generates a cryptographically random session_id when omitted.

List media assets isolated to one Cassette session.

Read the live Cassette timeline as a bounded text digest (CTL). Call this before any statement about project state — never answer from memory. contact_sheet=true also tiles the stored clip posters into one image (zero render).

Surgical no-LLM timeline edit through the manual-editor command lane (requires CASSETTE_DIRECT_EDIT=1). Use for small named changes (trim, text, delete, undo) after reading cassette_timeline; big or creative briefs go through cassette_run_job. input is always {"payload": {...}}. Pass expected_version from the last timeline read; tool_name 'undo' with input.cursorSequence rewinds the shared operation history.

Build a complete Cassette edit prompt from a natural-language instruction and session assets.

Match and optionally register a Free To Use background-music asset for a session.

Match an exact song and artist, optionally download it, and register it with the session.

Search Jamendo with validated fixed-form music preferences and optionally register a result.

Classify a Cassette question using question mode, or resume an interrupted job using validated job_id and response fields.

Start a Cassette edit. Local MCP execution is background-by-default; set wait=true only for compatibility when a blocking call is intentional.

Read one job or recent session jobs. wait_for_change_sec performs a bounded long-poll from 0 to 30 seconds.

Resolve a review-required completion. Rendering starts only for an explicit, validated decision=export.

Request cooperative cancellation of a persisted Cassette job.

Get or set the session's Cassette model and thinking level. Call with only session_id to see the current choice and available options; pass model (id or label) and/or thinking_level to change them — persisted for the session, applied from the next cassette_run_job turn. Defaults match the web editor; change only when the user asks.