Tentacle
/[tɑ̃.ta.kyl]/n.Origin
From Latin tentaculum ('feeler'), from tentare ('to feel, to try'). In cephalopod biology, tentacles are elongated, specialized limbs for grasping and sensing. In Synedre, it represents a persistent, sovereign agentic instance bearing a strategic mandate.
Definition
A sovereign, persistent agentic session with high-level architectural autonomy. Identified by (id, profile, session_slug), a tentacle holds a formal objective, a persistent handoff file, a dedicated mailbox for inter-agent messaging, and publishes a live sovereign plan artifact. It plans multi-day roadmaps, tracks milestones, and coordinates operational sub-units without context loss.
Example
Tentacle #1387 governs the CodeMyShop product roadmap, communicating asynchronously with peer tentacles and maintaining its living plan artifact updated across major deliverables.