What the Heartline stores

The Heartline stores whatever you choose to put there. It is a personal record that your companion can draw on in conversations — facts about yourself, things you want the companion to always know, reflections on moments that mattered, intentions you want to hold, or anything else you want preserved explicitly rather than left to automatic extraction.

Unlike the automatic memory layers, Heartline entries are not inferred by the system. They exist because you created them. This distinction matters: automatic memory is a best-effort distillation of what the AI noticed as significant. The Heartline is authoritative — what you put there is what the companion knows, precisely as you stated it.

How the Heartline differs from automatic memory

SAM uses two memory systems in parallel. SuperMemory automatically extracts key context from conversations and stores it for semantic retrieval — it works in the background without requiring any action from the user. The Heartline is the opposite: it is entirely manual, entirely intentional, and entirely under user control.

The practical difference is fidelity. Automatic memory is useful for ambient context — the broad shape of who you are and what you have been through. The Heartline is useful for precision — things you want the companion to know exactly right, in your words, not extracted and summarised. See AI Memory for the full architecture of how both layers work together.

How Heartline entries are used in conversations

Heartline entries are retrieved in the same way as other memory: through a recall coordinator that evaluates whether they are relevant to the current turn. Unlike automatic memory, Heartline entries are given priority — they represent the user's explicit statement of what they want the companion to know, and the system treats them accordingly.

In practice, this means Heartline entries surface reliably when the topic they relate to comes up in conversation, rather than only when the semantic similarity threshold is met. The companion treats them as authoritative facts rather than extracted impressions.

Managing your Heartline

Heartline entries can be viewed, edited, and deleted at any time from the Heartline section of SAM. Deleting an entry removes it from the retrieval pool — the companion will no longer reference it in future conversations. This makes the Heartline a living document rather than a permanent record: users can update it as circumstances change, correct things the companion has wrong, or clear it entirely if they want to start fresh.

This level of control is an important part of companion privacy — ensuring that what the companion knows about you is accurate, current, and exactly what you want it to know.