# Mem0 ts-v3.1.5 — Mem0 Node SDK (v3.1.5)

- Product: Mem0 (https://whatsnew.fyi/product/mem0)
- Vendor: Mem0
- Date: 2026-08-05
- Version: ts-v3.1.5
- Original notes: https://github.com/mem0ai/mem0/releases/tag/ts-v3.1.5
- Permalink: https://whatsnew.fyi/product/mem0/releases/ts-v3.1.5

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — Add agentCustomInstructions to PromptUpdatePayload, AddMemoryOptions, and ProjectResponse to set a separate extraction instruction set for agent-scoped memories

**New Features:**
- **Client:** Add `agentCustomInstructions` to `PromptUpdatePayload`, `AddMemoryOptions`, and `ProjectResponse`. It sets a second extraction instruction set that applies only to agent-scoped memories: an add passing `agentId` without `userId` uses it, one passing both splits by attribution, and while it is unset `customInstructions` continues to apply to every memory ([#6809](https://github.com/mem0ai/mem0/pull/6809))