Hacker News front pageApr 25, 2026, 09:24 UTC+8

Open-source memory layer Stash lets any AI agent do what Claude.ai and ChatGPT memory can do

Open source memory layer so any AI agent can do what Claude.ai and ChatGPT do

Stash released an open-source persistent memory layer for AI agents, exposing 28 MCP tools and a 6-stage pipeline for long-term memory. The page says it uses PostgreSQL plus pgvector and hierarchical namespaces to separate user, project, and self memory. The real point is a portable memory layer, not the headline claim about matching ChatGPT or Claude.ai.

Why it matters: HKR-H/K/R all pass: the hook is portable long-term memory for any agent, and the page gives concrete architecture details. The score stays in the low featured band because this is an indie OSS infrastructure launch, not a major lab or platform release.

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Take

Stash is aiming at the right layer: memory should sit outside the model and travel across agents. The concrete pieces are good: 28 MCP tools, a 6-stage pipeline, PostgreSQL plus pgvector, and hierarchical namespaces like `/users`, `/projects`, and `/self`. That is cleaner than shoving every past session into a larger context window.

I don’t buy the RAG contrast on the page. It paints RAG as a file search box, while many teams already run event logs, summary memory, vector recall, and profile stores together. Stash’s value is the portable protocol and schema, not the “mind that grows” language. The missing parts are the dangerous ones: forgetting policy, contradiction handling, privacy boundaries, and write permissions. Memory failures are worse than retrieval misses because agents reuse bad memories as settled facts.

Source: Hacker News front page · alash3al.github.io
Published: Apr 25, 2026, 09:24 UTC+8 · Apr 25, 2026