
rag-skills
RAG-specific best practices for LlamaIndex, ChromaDB, and Celery workers. Covers ingestion, retrieval, embeddings, and performance.
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/llama-farm/llamafarm --skill rag-skills- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads rag-skills automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
RAG Skills for LlamaFarm
Framework-specific patterns and code review checklists for the RAG component.
Extends: python-skills - All Python best practices apply here.
Component Overview
| Aspect | Technology | Version |
|---|---|---|
| Python | Python | 3.11+ |
| Document Processing | LlamaIndex | 0.13+ |
| Vector Storage | ChromaDB | 1.0+ |
| Task Queue | Celery | 5.5+ |
| Embeddings | Universal/Ollama/OpenAI | Multiple |
Directory Structure
rag/
├── api.py # Search and database APIs
├── celery_app.py # Celery configuration
├── main.py # Entry point
├── core/
│ ├── base.py # Document, Component, Pipeline ABCs
│ ├── factories.py # Component factories
│ ├── ingest_handler.py # File ingestion with safety checks
│ ├── blob_processor.py # Binary file processing
│ ├── settings.py # Pydantic settings
│ └── logging.py # RAGStructLogger
├── components/
│ ├── embedders/ # Embedding providers
│ ├── extractors/ # Metadata extractors
│ ├── parsers/ # Document parsers (LlamaIndex)
│ ├── retrievers/ # Retrieval strategies
│ └── stores/ # Vector stores (ChromaDB, FAISS)
├── tasks/ # Celery tasks
│ ├── ingest_tasks.py # File ingestion
│ ├── search_tasks.py # Database search
│ ├── query_tasks.py # Complex queries
│ ├── health_tasks.py # Health checks
│ └── stats_tasks.py # Statistics
└── utils/
└── embedding_safety.py # Circuit breaker, validation
Quick Reference
| Topic | File | Key Points |
|---|---|---|
| LlamaIndex | llamaindex.md | Document parsing, chunking, node conversion |
| ChromaDB | chromadb.md | Collections, embeddings, distance metrics |
| Celery | celery.md | Task routing, error handling, worker config |
| Performance | performance.md | Batching, caching, deduplication |
Core Patterns
Document Dataclass
from dataclasses import dataclass, field
from typing import Any
@dataclass
class Document:
content: str
metadata: dict[str, Any] = field(default_factory=dict)
id: str = field(default_factory=lambda: str(uuid.uuid4()))
source: str | None = None
embeddings: list[float] | None = None
Component Abstract Base Class
from abc import ABC, abstractmethod
class Component(ABC):
def __init__(
self,
name: str | None = None,
config: dict[str, Any] | None = None,
project_dir: Path | None = None,
):
self.name = name or self.__class__.__name__
self.config = config or {}
self.logger = RAGStructLogger(__name__).bind(name=self.name)
self.project_dir = project_dir
@abstractmethod
def process(self, documents: list[Document]) -> ProcessingResult:
pass
Retrieval Strategy Pattern
class RetrievalStrategy(Component, ABC):
@abstractmethod
def retrieve(
self,
query_embedding: list[float],
vector_store,
top_k: int = 5,
**kwargs
) -> RetrievalResult:
pass
@abstractmethod
def supports_vector_store(self, vector_store_type: str) -> bool:
pass
Embedder with Circuit Breaker
class Embedder(Component):
DEFAULT_FAILURE_THRESHOLD = 5
DEFAULT_RESET_TIMEOUT = 60.0
def __init__(self, ...):
super().__init__(...)
self._circuit_breaker = CircuitBreaker(
failure_threshold=config.get("failure_threshold", 5),
reset_timeout=config.get("reset_timeout", 60.0),
)
self._fail_fast = config.get("fail_fast", True)
def embed_text(self, text: str) -> list[float]:
self.check_circuit_breaker()
try:
embedding = self._call_embedding_api(text)
self.record_success()
return embedding
except Exception as e:
self.record_failure(e)
if self._fail_fast:
raise EmbedderUnavailableError(str(e)) from e
return [0.0] * self.get_embedding_dimension()
Review Checklist Summary
When reviewing RAG code:
-
LlamaIndex (Medium priority)
- Proper chunking configuration
- Metadata preservation during parsing
- Error handling for unsupported formats
-
ChromaDB (High priority)
- Thread-safe client access
- Proper distance metric selection
- Metadata type compatibility
-
Celery (High priority)
- Task routing to correct queue
- Error logging with context
- Proper serialization
-
Performance (Medium priority)
- Batch processing for embeddings
- Deduplication enabled
- Appropriate caching
See individual topic files for detailed checklists with grep patterns.
FAQ
What does the rag-skills skill do?
RAG-specific best practices for LlamaIndex, ChromaDB, and Celery workers. Covers ingestion, retrieval, embeddings, and performance.
How do I install rag-skills?
Run npx skills add https://github.com/llama-farm/llamafarm --skill rag-skills in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/rag-skills/ (personal) or .claude/skills/rag-skills/ (project).
Which AI agents can use rag-skills?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is rag-skills safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains rag-skills?
It is published by llama-farm in llama-farm/llamafarm. It has 58 recorded installs.
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