self-hosted-sandboxes-memory changedmanaged-agents/self-hosted-sandboxes-memory
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1010 betaHeader: managed-agents-2026-04-01
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13Sessions on a self-hosted environment attach [memory stores](https://platform.claude.com/docs/en/managed-agents/memory) exactly as sessions on cloud environments do. List them in `resources` (java, php; csharp, go: `Resources`) when you create the session, as shown in [Attach a memory store to a session](https://platform.claude.com/docs/en/managed-agents/memory#attach-a-memory-store-to-a-session). A session accepts up to 8 memory stores.
13Sessions on a self-hosted environment attach [memory stores](https://platform.claude.com/docs/en/managed-agents/memory) exactly as sessions on cloud environments do. List them in `resources` (csharp, go: `Resources`) when you create the session, as shown in [Attach a memory store to a session](https://platform.claude.com/docs/en/managed-agents/memory#attach-a-memory-store-to-a-session). A session accepts up to 8 memory stores.
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1515The difference is who materializes the store. On a self-hosted environment your worker, rather than Anthropic's infrastructure, downloads each store into the sandbox and syncs the agent's changes back.
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6969`memory_sync_interval` (typescript: `memorySyncIntervalMs`; go: `MemorySyncInterval`) sets how often attached stores reconcile with the server while the session runs.
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71| Setting | Value |
72| ---------------------- | ----------------------------------------------------------- |
73| Default | 15 seconds |
74| Minimum | 5 seconds |
75| Example (10 seconds) | `10` (python; typescript: `10_000`; go: `10 * time.Second`) |
76| Disable memory support | `None` (python; typescript: `null`; go: `-1`) |
71| Setting | Value |
72| ---------------------- | --------------------------------------------------- |
73| Default | 15 seconds |
74| Minimum | 5 seconds |
75| Example (10 seconds) | `10` (typescript: `10_000`; go: `10 * time.Second`) |
76| Disable memory support | `None` (typescript: `null`; go: `-1`) |
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7878A shorter interval narrows the window in which another session sees stale memories, at the cost of more memory store requests.
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8080Disable memory support only on workers whose sessions attach no memory stores. A disabled worker neither downloads nor syncs stores, so a session with stores attached runs without them even though its system prompt still describes them.
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82While memory support is enabled, a work item that arrives without a `secret` (java, php; csharp, go: `Secret`) for a session with attached stores fails rather than running without memory. See [Memory stores fail to mount](https://platform.claude.com/docs/en/managed-agents/self-hosted-sandboxes-operations#memory-stores-fail-to-mount).
82While memory support is enabled, a work item that arrives without a `secret` (csharp, go: `Secret`) for a session with attached stores fails rather than running without memory. See [Memory stores fail to mount](https://platform.claude.com/docs/en/managed-agents/self-hosted-sandboxes-operations#memory-stores-fail-to-mount).
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8484### Deletions
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