Cuga Knowledge RAG

Knowledge base (RAG)

cuga has a built-in knowledge base: local vector store + Docling for parsing/normalizing documents before chunking and embedding, so ingestion stays self-contained with no external document service.

Knowledge is enabled by default (enable_knowledge=True); the SDK auto-injects knowledge tools/awareness so the agent knows what's available and how to search it.

Try it

uv run cuga start demo_knowledge

Full walkthrough with sample docs: docs/examples/knowledge_demo/ in a cuga-agent checkout.

Programmatic use

from cuga import CugaAgent
import asyncio

agent = CugaAgent(enable_knowledge=True)

async def main():
    await agent.knowledge.ingest("/path/to/quarterly_report.pdf")

    result = await agent.invoke("What does the report say about Q4 revenue?")
    print(result.answer)  # agent searches the knowledge base automatically

    results = await agent.knowledge.search("Q4 revenue figures")
    for r in results:
        print(f"{r['filename']} (page {r['page']}): {r['text'][:100]}")

    docs = await agent.knowledge.list_documents()
    await agent.aclose()

asyncio.run(main())

Scoping

# Session-scoped: temporary, tied to one conversation thread
await agent.knowledge.ingest("/path/to/file.pdf", scope="session", thread_id="user-session-123")
results = await agent.knowledge.search("query", scope="session", thread_id="user-session-123")

# Agent-scoped (default): permanent, shared across conversations
await agent.knowledge.ingest("/path/to/file.pdf", scope="agent")

Use session scope for per-conversation uploads that shouldn't leak between users; use agent scope for a shared reference corpus.

Disabling

agent = CugaAgent(tools=[my_tools], enable_knowledge=False)

Supported types & tuning

PDF, DOCX, XLSX, PPTX, HTML, Markdown, images, and more (via Docling). Embedding provider (fastembed default/local, huggingface, openai, ollama, openrouter) plus model/batch/concurrency are set under [knowledge.embeddings] in settings.toml or via --embeddings-* CLI flags. Switching provider/model invalidates existing vectors (different dimensionality) — the manage UI (cuga start manager) surfaces a "re-index recommended" banner when that happens.

Full provider matrix: https://docs.cuga.dev/docs/sdk/knowledge/