llms_txt_tools_knowledge.py
"""
LLMs.txt Tools with Knowledge Base
=============================
Demonstrates loading all documentation from an llms.txt file into a knowledge base
for retrieval-augmented generation (RAG).
The agent reads the llms.txt index, fetches all linked documentation pages,
and stores them in a PgVector knowledge base for semantic search.
"""
from agno.agent import Agent
from agno.knowledge.knowledge import Knowledge
from agno.models.openai import OpenAIResponses
from agno.tools.llms_txt import LLMsTxtTools
from agno.vectordb.pgvector import PgVector
# ---------------------------------------------------------------------------
# Setup Knowledge Base
# ---------------------------------------------------------------------------
db_url = "postgresql+psycopg://ai:ai@localhost:5532/ai"
knowledge = Knowledge(
vector_db=PgVector(
table_name="llms_txt_docs",
db_url=db_url,
),
)
# ---------------------------------------------------------------------------
# Create Agent
# ---------------------------------------------------------------------------
agent = Agent(
model=OpenAIResponses(id="gpt-5.4"),
knowledge=knowledge,
search_knowledge=True,
tools=[LLMsTxtTools(knowledge=knowledge, max_urls=20)],
instructions=[
"You can load documentation from llms.txt files into your knowledge base.",
"When asked about a project, first load its llms.txt into the knowledge base, then answer questions.",
],
markdown=True,
)
# ---------------------------------------------------------------------------
# Run Agent
# ---------------------------------------------------------------------------
if __name__ == "__main__":
agent.print_response(
"Load the documentation from https://docs.agno.com/llms.txt into the knowledge base, "
"then tell me how to create an agent with Agno",
markdown=True,
stream=True,
)
Run the Example
Set up your virtual environment
uv venv --python 3.12
source .venv/bin/activate
uv venv --python 3.12
.venv\Scripts\activate
Export your OpenAI API key
export OPENAI_API_KEY="your_openai_api_key_here"
$Env:OPENAI_API_KEY="your_openai_api_key_here"
Run PgVector
docker run -d \
-e POSTGRES_DB=ai \
-e POSTGRES_USER=ai \
-e POSTGRES_PASSWORD=ai \
-e PGDATA=/var/lib/postgresql/data/pgdata \
-v pgvolume:/var/lib/postgresql/data \
-p 5532:5432 \
--name pgvector \
agnohq/pgvector:18