agent-skills

Modular RAG skills for a self-hosted LLM agent, backed by Qdrant.

Most "chat with your Obsidian vault" projects embed a vector store inside the Obsidian app and stop there. This is a different shape. Any knowledge source (an Obsidian vault, a folder of notes, a reference set) becomes a skill the agent can search, all behind one interface. It targets a standalone agent (Ollama, an agent gateway, an MCP client) instead of living inside the note-taking app.

The Obsidian vault indexer is the main worked example. It is one skill, not the whole project.

The core idea: a skill is three things

skill = (Qdrant collection) + (manifest: where the docs live + how to chunk) + (retrieval hook)

Everything downstream is generic. Adding a knowledge skill is a manifest, not a rewrite:

NOTES = SkillManifest(name="work_notes", source_glob="~/notes/work/**/*.md")
register(NOTES)          # chunk -> embed -> upsert
retrieve(NOTES.name, q)  # embed query -> search -> context block

Related MCP server: ragi

Architecture

  sources            ingestion              Qdrant                 agent
  vault /     ---->  chunk + embed  ---->  one collection  ---->  gateway / MCP
  notes /            (via Ollama)          per skill              injects context,
  reference sets                                                  then answers

What the vault skill handles

The Obsidian loader (agent_skills/vault.py) does not treat notes as flat text:

• YAML frontmatter is parsed into payload metadata, not embedded as prose.

• [[wikilinks]] are flattened to their display text for the embedding, and kept as a links list in the payload for graph-aware retrieval.

• #tags (inline and frontmatter) become filterable payload metadata.

• Image embeds (![[...]]) are dropped before embedding.

• Incremental sync: each note is SHA-256 hashed, only changed notes are re-embedded, deleted notes are purged. The collection is not wiped per run.

• Deterministic chunk IDs (uuid5(path:index)) so edits overwrite cleanly instead of duplicating.

Quickstart

pip install -r requirements.txt

# 1. bring up Qdrant locally
docker run -p 6333:6333 -v $(pwd)/qdrant_storage:/qdrant/storage qdrant/qdrant

# 2. pull an embedding model in Ollama
ollama pull nomic-embed-text

# 3. set VAULT_PATH in agent_skills/config.py, then index
python examples/index_vault.py sync

# 4. query
python examples/index_vault.py ask "how did I configure the network?"

Add your own skill

1. Copy examples/register_notes.py.

2. Write a SkillManifest pointing at your docs.

3. register() it. It is now a collection the agent queries like any other.

Plug into an agent (MCP)

examples/mcp_server.py exposes retrieval as MCP tools (list_skills, search_vault, search_skill), so an MCP client can query the knowledge. The surface is read-only: it retrieves, it does not write or take actions.

pip install "mcp[cli]"
python examples/mcp_server.py          # stdio, for local MCP clients

For a local client (Claude Code, Cursor, Claude Desktop), point its MCP config at the script:

{
  "mcpServers": {
    "agent-skills": {
      "command": "python",
      "args": ["/absolute/path/to/examples/mcp_server.py"]
    }
  }
}

For a networked gateway, switch the transport to sse at the bottom of mcp_server.py and point the gateway at http://<host>:8000/sse. The agent calls search_vault(...), the tool returns a context block, and the gateway feeds it into the model's context.

Config

Everything lives in agent_skills/config.py: Ollama URL, embedding model and dimension, Qdrant host/port, chunk size and overlap. Swap the embedder freely, but keep EMBED_DIM matched to the model or the upsert will reject.

Notes

• Local-first. Embeddings run on your own Ollama host; nothing leaves the network.

• Retrieval only. This gives an agent knowledge to reason over. It does not hand the agent tools to act on the world.

• Not an Obsidian plugin. It reads the vault as files; it does not run in the app.

• Early stage: the code is organized and syntax-clean, but run it against a live Qdrant and Ollama before relying on it.

License

MIT. See LICENSE.