langchain-disvr

LangChain integration for Disvr — tool search engine for AI agents.

Your agent says "I need a translation tool" → Disvr finds the best one.

Install

pip install langchain-disvr

Quick Start

from langchain_disvr import DisvrDiscoverTool, DisvrToolDetails

# Create tools
discover = DisvrDiscoverTool(api_key="dsvr_your_key_here")
details = DisvrToolDetails(api_key="dsvr_your_key_here")

# Use standalone
result = discover.invoke({"need": "translate Chinese to Thai"})
print(result)

# Get full details for a recommended tool
detail = details.invoke({"service_id": "service-uuid-from-results"})
print(detail)

Use with LangChain Agent

from langchain_openai import ChatOpenAI
from langchain.agents import AgentExecutor, create_tool_calling_agent
from langchain_core.prompts import ChatPromptTemplate
from langchain_disvr import DisvrDiscoverTool, DisvrToolDetails

# Set up tools
tools = [
    DisvrDiscoverTool(api_key="dsvr_your_key_here"),
    DisvrToolDetails(api_key="dsvr_your_key_here"),
]

# Create agent
llm = ChatOpenAI(model="gpt-4o")
prompt = ChatPromptTemplate.from_messages([
    ("system", "You are a helpful assistant. When you need an external tool, use disvr_discover to find one."),
    ("human", "{input}"),
    ("placeholder", "{agent_scratchpad}"),
])
agent = create_tool_calling_agent(llm, tools, prompt)
executor = AgentExecutor(agent=agent, tools=tools, verbose=True)

# Run
result = executor.invoke({"input": "I need to translate a Chinese legal contract to Thai. Find me the best tool."})

Use with Claude + LangChain

from langchain_anthropic import ChatAnthropic
from langchain.agents import AgentExecutor, create_tool_calling_agent
from langchain_core.prompts import ChatPromptTemplate
from langchain_disvr import DisvrDiscoverTool, DisvrToolDetails

tools = [
    DisvrDiscoverTool(api_key="dsvr_your_key_here"),
    DisvrToolDetails(api_key="dsvr_your_key_here"),
]

llm = ChatAnthropic(model="claude-sonnet-4-20250514")
prompt = ChatPromptTemplate.from_messages([
    ("system", "You are a helpful assistant. Use disvr_discover to find external tools when needed."),
    ("human", "{input}"),
    ("placeholder", "{agent_scratchpad}"),
])
agent = create_tool_calling_agent(llm, tools, prompt)
executor = AgentExecutor(agent=agent, tools=tools, verbose=True)

result = executor.invoke({"input": "Find me a tool that can do OCR on scanned documents"})

API Key

Get a free API key at https://www.disvr.top/keys (1,000 requests/day).

Tools Provided

License

MIT