How it works

flowchart LR
  U["User Message"] --> D["Deterministic Trigger Recall"]
  D -->|strong trusted match| I["Inject Bounded Hidden Context"]
  D -->|weak or empty| H["Check Recall Intent"]
  H -->|no| O["Inject Bounded Recall Outcome"]
  H -->|yes| R["Active Memory Deep Recall Sub-Agent"]
  R -->|NONE| M
  R -->|unavailable| O
  R -->|relevant summary| I
  O --> M["Main Reply"]
  I --> M

The deep-recall sub-agent can call only the configured memory recall tools (see Memory tools). If the connection between the query and available memory is weak, it returns NONE and the main reply proceeds without extra context. Intentional no-intent skips and unavailable recall add only a fixed, bounded outcome note.

Active memory is a conversational enrichment feature, not a platform-wide inference feature:

Inter-session messages and child completion deliveries do not run Active Memory, even when they arrive in a visible conversation. Apus uses their typed delivery origin to skip recall. Later human messages in that same conversation remain eligible under the usual targeting and session rules.

Use it when the session is persistent and user-facing, the agent has meaningful long-term memory to search, and continuity/personalization matter more than raw prompt determinism: stable preferences, recurring habits, long-term context that should surface naturally. It is a poor fit for automation, internal workers, one-shot API tasks, or anywhere hidden personalization would be surprising.

When it runs

Active Memory has two targeting paths for the deep-recall lane:

1. Remember across conversations automatically targets agents whose effective memory.search.rememberAcrossConversations setting is enabled, but only for private direct or persistent explicit UI conversations.
2. Advanced Active Memory targets agent IDs listed in plugins.entries.active-memory.config.agents and applies the plugin's chat type and chat ID controls.

Both paths require the plugin to be enabled and an eligible interactive persistent conversation. A session-scoped /active-memory off pauses both paths for that conversation. If any condition fails, active memory does not run for that turn, and the main reply is unaffected.

config.mode controls when a targeted turn starts the blocking sub-agent:

The deterministic trusted-trigger lane remains available in off mode. rememberAcrossConversations is unchanged: it still controls whether deep recall may search other private conversations.

Session types

config.allowedChatTypes controls which kinds of conversations may run the advanced Active Memory path. It cannot widen Remember across conversations: that product setting remains private-only even when advanced Active Memory is allowed in groups or channels. Default:

allowedChatTypes: ["direct"]

Valid values: direct, group, channel, explicit (portal-style sessions with an opaque session id, for example agent:main:explicit:portal-123). Direct-message sessions run by default; group, channel, and explicit sessions need to be opted in:

allowedChatTypes: ["direct", "group"]
allowedChatTypes: ["direct", "group", "channel"]

For narrower rollout inside an allowed chat type, add config.allowedChatIds and config.deniedChatIds:

• allowedChatIds is an allowlist of resolved conversation ids. When non-empty, active memory only runs for sessions whose conversation id is in the list — this narrows every allowed chat type at once, including direct messages. To keep all direct messages while narrowing only groups, add the direct peer ids to allowedChatIds too, or keep allowedChatTypes scoped to the group/channel rollout you are testing.
• deniedChatIds is a denylist that always wins over allowedChatTypes and allowedChatIds.

Ids come from the persistent channel session key (for example Feishu chat_id/open_id, Telegram chat id, Slack channel id). Matching is case-insensitive. If allowedChatIds is non-empty and Apus cannot resolve a conversation id for the session, active memory skips the turn instead of guessing.

allowedChatTypes: ["direct", "group"],
allowedChatIds: ["ou_operator_open_id", "oc_small_ops_group"],
deniedChatIds: ["oc_large_public_group"]