Himanshu-SangshettiandCursor
10d6717068
Review findings: delete was not partitioned by scope.key, capture replay after restart could double-write, and Mem0 errors were swallowed as empty recall. Co-authored-by: Cursor <cursoragent@cursor.com>
94 lines
3.7 KiB
Markdown
94 lines
3.7 KiB
Markdown
# @mem0/eve
|
|
|
|
Mem0 as a first-class [Eve](https://eve.dev/docs/memory) memory provider.
|
|
|
|
Eve recalls relevant memories before each turn, captures completed turns automatically, and exposes search / remember / forget tools bound to the locked memory scope. Mem0 owns storage, extraction, and retrieval.
|
|
|
|
```ts
|
|
import { defineMemory } from "eve/memory";
|
|
import { byPrincipal } from "eve/memory/scope";
|
|
import { mem0Provider } from "@mem0/eve";
|
|
|
|
export default defineMemory({
|
|
description: "Recall and manage durable context for the current user.",
|
|
provider: mem0Provider({
|
|
apiKey: process.env.MEM0_API_KEY!,
|
|
}),
|
|
scope: byPrincipal,
|
|
});
|
|
```
|
|
|
|
## Install
|
|
|
|
```bash
|
|
npm install @mem0/eve
|
|
```
|
|
|
|
`eve` is a peer dependency. Get an API key from the [Mem0 dashboard](https://app.mem0.ai/dashboard/api-keys).
|
|
|
|
Until Eve lists Mem0 in the official registry, add the slot file yourself as `agent/memory/mem0.ts`. `eve add memory/mem0` is not available yet. After the registry PR lands, that command will create the same file.
|
|
|
|
The live MCP path today is `eve add connection/mem0`. That is a different integration: tools the model may call, not automatic recall/capture.
|
|
|
|
## What it does
|
|
|
|
| Eve hook | Mem0 behavior |
|
|
|---|---|
|
|
| `recall["turn.started"]` | Semantic search over memories for the locked scope |
|
|
| `recall["compaction.completed"]` | Same search after Eve compacting history (`turn` may be null) |
|
|
| `capture["turn.completed"]` | Add the completed user turn and, when present, the latest assistant reply |
|
|
| `tools()` | `search`, `remember`, `forget` |
|
|
|
|
Search, capture, remember, and forget are partitioned by `memory.scope.key`. Forget loads the memory first and deletes only when `userId` matches that key.
|
|
|
|
Capture uses `operationId` as an idempotency key: an in-process gate plus a durable `metadata.operation_id` lookup so Eve replays after restart do not write twice.
|
|
|
|
If the slot file is named `mem0.ts`, Eve qualifies tools as `mem0__search`, `mem0__remember`, and `mem0__forget`.
|
|
|
|
A throwing `recall` fails the Eve turn. A throwing `capture` is logged by Eve and does not fail the turn. Tool `execute` errors become failed tool results the model can see.
|
|
|
|
## Options
|
|
|
|
```ts
|
|
mem0Provider({
|
|
apiKey: process.env.MEM0_API_KEY!,
|
|
host: "https://api.mem0.ai",
|
|
topK: 5,
|
|
threshold: 0.1,
|
|
rerank: false,
|
|
infer: true,
|
|
autoSearch: { enabled: true },
|
|
capture: { enabled: true },
|
|
metadata: { app: "support-agent" },
|
|
});
|
|
```
|
|
|
|
| Option | Default | Purpose |
|
|
|---|---|---|
|
|
| `apiKey` | required without `store` | String or async getter. Function keys are validated on first use. |
|
|
| `host` | `https://api.mem0.ai` | Mem0 Platform host (`http:` or `https:` URL) |
|
|
| `topK` | `5` | Result count for automatic recall and the `search` tool |
|
|
| `threshold` | `0.1` | Minimum similarity for automatic recall and the `search` tool |
|
|
| `rerank` | `false` | Mem0 reranking for automatic recall and the `search` tool |
|
|
| `infer` | `true` | Extract facts on capture and on `remember` |
|
|
| `autoSearch.enabled` | `true` | Recall on `turn.started` and `compaction.completed` |
|
|
| `capture.enabled` | `true` | Write after each successful turn |
|
|
| `metadata` | `{}` | Extra metadata on captured turns |
|
|
| `store` | unset | Test / advanced injection. Replaces the Mem0 client and must honor `userId`. |
|
|
|
|
## Official registry
|
|
|
|
Eve already listed Mem0 as an MCP connection. This package is the memory-provider path. After `@mem0/eve` is on npm, open a PR against [vercel/eve](https://github.com/vercel/eve) that adds `memory/mem0` using the files in [`registry/`](./registry). See [`registry/README.md`](./registry/README.md).
|
|
|
|
## Development
|
|
|
|
Requires Node.js 24+.
|
|
|
|
```bash
|
|
cd integrations/eve
|
|
pnpm install
|
|
pnpm test
|
|
pnpm typecheck
|
|
pnpm build
|
|
```
|