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84 lines
3.4 KiB
Markdown
84 lines
3.4 KiB
Markdown
# OpenViking Memory Provider
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Context database by Volcengine (ByteDance) with filesystem-style knowledge hierarchy, tiered retrieval, and automatic memory extraction.
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## Requirements
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- `pip install openviking`
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- OpenViking server running (`openviking-server`)
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- Embedding + VLM model configured in `~/.openviking/ov.conf`
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## Setup
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```bash
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hermes memory setup # select "openviking"
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```
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The setup can link to an existing `~/.openviking/ovcli.conf`, copy its current
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connection values into Hermes, or create a minimal `ovcli.conf` when one does
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not exist.
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Or manually:
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```bash
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hermes config set memory.provider openviking
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echo "OPENVIKING_ENDPOINT=http://localhost:1933" >> ~/.hermes/.env
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```
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## Config
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All config via environment variables in `.env`:
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| Env Var | Default | Description |
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|---------|---------|-------------|
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| `OPENVIKING_ENDPOINT` | `http://127.0.0.1:1933` | Server URL |
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| `OPENVIKING_API_KEY` | (none) | User/admin API key for authenticated servers |
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| `OPENVIKING_ACCOUNT` | `default` | Tenant account for local/trusted mode |
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| `OPENVIKING_USER` | `default` | Tenant user for local/trusted mode |
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| `OPENVIKING_AGENT` | `hermes` | Hermes peer ID in OpenViking, used for peer-scoped memories |
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When `OPENVIKING_API_KEY` is set, Hermes lets OpenViking derive account/user
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identity from the key. In local or trusted deployments without an API key,
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Hermes sends `OPENVIKING_ACCOUNT` and `OPENVIKING_USER` as identity headers.
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## Tools
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| Tool | Description |
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|------|-------------|
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| `viking_search` | Semantic search with fast/deep/auto modes |
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| `viking_read` | Read content at a viking:// URI (abstract/overview/full) |
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| `viking_browse` | Filesystem-style navigation (list/tree/stat) |
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| `viking_remember` | Store a fact directly with OpenViking `content/write` |
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| `viking_forget` | Delete one exact `viking://` memory file URI |
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| `viking_add_resource` | Ingest URLs/docs into the knowledge base |
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## Memory Writes And Deletes
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`viking_remember` writes directly to OpenViking with `POST /api/v1/content/write`
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and `mode=create`. It creates peer-scoped memory files under
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`viking://user/peers/${OPENVIKING_AGENT}/memories/...`; OpenViking may return a
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canonical user-scoped form such as
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`viking://user/default/peers/${OPENVIKING_AGENT}/memories/...` in API-key mode.
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Explicit remembers do not depend on session commit extraction.
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Hermes built-in `memory` tool additions are mirrored to OpenViking after the
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local memory operation succeeds:
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| Hermes action | OpenViking operation |
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|---------------|----------------------|
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| `add` | `content/write` with `mode=create` under the configured peer memory namespace |
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Built-in `replace` and `remove` operations are not mirrored because Hermes
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native memory entries do not yet carry stable OpenViking file URIs. Use
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`viking_forget` when the user explicitly asks to delete a specific OpenViking
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memory URI.
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`viking_forget` is intentionally narrow. It only accepts concrete user memory
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file URIs, such as
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`viking://user/peers/hermes/memories/preferences/mem_abc123.md` or the canonical
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`viking://user/default/peers/hermes/memories/preferences/mem_abc123.md`. Files
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directly under `memories/`, such as `viking://user/default/memories/profile.md`,
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are also allowed because OpenViking supports them. The tool rejects directories,
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resources, skills, sessions, generated summary files, and URIs with query
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strings or fragments. Use OpenViking's MCP, CLI, or admin APIs for broader
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resource and directory cleanup.
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