# Mem0 v2.0.17 — Mem0 Python SDK (v2.0.17)

- Product: Mem0 (https://whatsnew.fyi/product/mem0)
- Vendor: Mem0
- Date: 2026-08-05
- Version: v2.0.17
- Original notes: https://github.com/mem0ai/mem0/releases/tag/v2.0.17
- Permalink: https://whatsnew.fyi/product/mem0/releases/v2.0.17

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- **added** — Add `agent_custom_instructions` to `project.update()` and `update_project()` methods (sync and async) and to the `ProjectUpdateOptions` and `AddMemoryOptions` typed models, enabling a separate extraction instruction set for agent-scoped memories
- **changed** — Memory extraction now splits by attribution when both `agent_id` and `user_id` are provided, and applies `agent_custom_instructions` when only `agent_id` is passed without `user_id`

**New Features:**
- **Client:** Add `agent_custom_instructions` to `project.update()`/`update_project()` (sync and async) and to the `ProjectUpdateOptions` and `AddMemoryOptions` typed models. It sets a second extraction instruction set that applies only to agent-scoped memories: an add passing `agent_id` without `user_id` uses it, one passing both splits by attribution, and while it is unset `custom_instructions` continues to apply to every memory ([#6809](https://github.com/mem0ai/mem0/pull/6809))