langchain-tinyfish 0.1.1

LangChain integration for TinyFish Web Agent - AI-powered web automation

langchain-tinyfish

TinyFish gives AI agents every level of web access through one platform. Four primitives, each built for a different layer:

• Search: live web results, structured and ready for LLM consumption. Free.
• Fetch: renders pages in a real browser, returns clean markdown, HTML, or JSON. Token-efficient for LLM pipelines. Free.
• Web Agent: autonomous agents that navigate, authenticate, and extract from real websites. Uses credits.
• Browser: remote Chromium sessions with full CDP access. Bring your own Playwright or Puppeteer scripts. Uses credits.

This package wraps all four as LangChain tools. Get your API key ->

Installation

pip install langchain-tinyfish

export TINYFISH_API_KEY="your-api-key"

Tools

All four tools can be used standalone or passed to a LangChain agent:

from langchain_tinyfish import (
    TinyFishSearch,
    TinyFishFetch,
    TinyFishWebAutomation,
    TinyFishBrowserSession,
)

Tool calls return strings. Successful responses are JSON strings produced from the TinyFish SDK response.

Search

Search the web and get structured results with titles, snippets, and URLs. Free, no credits required.

from langchain_tinyfish import TinyFishSearch

search = TinyFishSearch()
results = search.invoke({
    "query": "latest LLM benchmarks 2025",
    "location": "US",
})
print(results)

Supported inputs:

Parameter	Required	Description
query	Yes	Search query
location	No	Optional location/country scope, such as "US"
language	No	Optional language code, such as "en"

Fetch

Extract clean content from up to 10 URLs at once. Returns markdown, HTML, or JSON. Free, no credits required.

from langchain_tinyfish import TinyFishFetch

fetch = TinyFishFetch()
content = fetch.invoke({
    "urls": ["https://docs.tinyfish.ai"],
    "format": "markdown",
    "links": True,
})
print(content)

Supported inputs:

Parameter	Required	Description
urls	Yes	List of 1-10 URLs
format	No	"markdown", "html", or "json"; defaults to "markdown"
links	No	Include extracted page links
image_links	No	Include extracted image links

Web Agent

Run complex, goal-oriented tasks on live websites. TinyFish handles navigation, anti-bot protection, and returns structured JSON. Uses credits.

from langchain_tinyfish import TinyFishWebAutomation

agent_tool = TinyFishWebAutomation()
result = agent_tool.invoke({
    "url": "https://finance.yahoo.com/quote/NVDA/",
    "goal": "Extract the current stock price of NVIDIA",
})
print(result)

Supported inputs:

Parameter	Required	Description
url	Yes	Starting URL for the automation
goal	Yes	Natural-language instructions for what to do and what to return

When TinyFishWebAutomation runs inside a LangGraph execution context, it uses TinyFish's streaming endpoint and emits progress events through LangGraph's stream writer. Outside LangGraph, it falls back to a blocking TinyFish run.

Browser Session

Launch a remote Chromium browser and get a CDP (Chrome DevTools Protocol) URL to connect with Playwright or Puppeteer. Sessions include remote browser infrastructure for direct CDP control. Uses credits.

from langchain_tinyfish import TinyFishBrowserSession

browser = TinyFishBrowserSession()
session = browser.invoke({
    "url": "https://example.com",
    "timeout_seconds": 300,
})
print(session)
# Returns a JSON string with: {"session_id": "...", "cdp_url": "wss://...", "base_url": "https://..."}

Supported inputs:

Parameter	Required	Description
url	No	Optional target URL to open when the browser session starts
timeout_seconds	No	Optional inactivity timeout for the browser session

With a LangChain Agent

Give your agent access to multiple TinyFish tools. The agent decides which primitive to use based on the task.

Install the optional agent dependencies:

pip install langchain langchain-openai langgraph

from langchain.agents import create_agent
from langchain_tinyfish import (
    TinyFishSearch,
    TinyFishFetch,
    TinyFishWebAutomation,
)

tools = [TinyFishSearch(), TinyFishFetch(), TinyFishWebAutomation()]
agent = create_agent(
    model="openai:gpt-5.5",
    tools=tools,
)

result = agent.invoke({
    "messages": [
        {
            "role": "user",
            "content": "Find the top 3 results for 'best open source LLMs' and extract the full content of the first result",
        }
    ]
})

for message in result["messages"]:
    print(message.content)

You can also pass the TinyFish tools to LangGraph's prebuilt agents, including langgraph.prebuilt.create_react_agent, if your application already uses LangGraph directly.

Stealth Mode and Proxies

For Web Agent runs on sites with bot protection (Cloudflare, CAPTCHAs, etc.), configure stealth browsing and geo-targeted proxies:

from langchain_tinyfish import TinyFishAPIWrapper, TinyFishWebAutomation

wrapper = TinyFishAPIWrapper(
    browser_profile="stealth",
    proxy_enabled=True,
    proxy_country_code="US",  # Also: GB, CA, DE, FR, JP, AU
)

agent_tool = TinyFishWebAutomation(api_wrapper=wrapper)

browser_profile and proxy settings are currently applied by TinyFishWebAutomation. Search, Fetch, and Browser Session tools can share the same wrapper for API key and timeout configuration, but they do not pass Web Agent browser profile or proxy options.

Configuration

All tools share a TinyFishAPIWrapper for API key and timeout configuration:

Parameter	Default	Description
api_key	$TINYFISH_API_KEY	Your TinyFish API key
browser_profile	"lite"	Web Agent browser profile: "lite" or "stealth"
proxy_enabled	False	Enable proxy routing for Web Agent runs
proxy_country_code	"US"	Proxy exit country for Web Agent runs: US, GB, CA, DE, FR, JP, AU
timeout	300	Request/poll timeout in seconds

from langchain_tinyfish import TinyFishAPIWrapper, TinyFishWebAutomation

wrapper = TinyFishAPIWrapper(
    browser_profile="stealth",
    timeout=600,
)
tool = TinyFishWebAutomation(api_wrapper=wrapper)

Parallel Web Agents

Every Web Agent run gets its own isolated remote browser. Run multiple agents concurrently with asyncio.gather:

import asyncio
from langchain_tinyfish import TinyFishWebAutomation

async def main():
    agent = TinyFishWebAutomation()

    tasks = [
        agent.ainvoke({"url": "https://example.com/page-1", "goal": "Extract the main heading"}),
        agent.ainvoke({"url": "https://example.com/page-2", "goal": "Extract the main heading"}),
        agent.ainvoke({"url": "https://example.com/page-3", "goal": "Extract the main heading"}),
    ]

    results = await asyncio.gather(*tasks)
    for result in results:
        print(result)

asyncio.run(main())

Async Usage

All tools support async with ainvoke:

import asyncio
from langchain_tinyfish import TinyFishSearch, TinyFishFetch

async def main():
    search = TinyFishSearch()
    fetch = TinyFishFetch()

    results = await search.ainvoke({"query": "TinyFish web agent"})
    content = await fetch.ainvoke({
        "urls": ["https://tinyfish.ai"],
        "format": "markdown",
    })

    print(results)
    print(content)

asyncio.run(main())

Development

# Install package + dev dependencies
pip install -e .
pip install -r requirements-dev.txt

# Run unit tests
make test

# Run linter
make lint

# Run integration tests (requires TINYFISH_API_KEY)
make integration_test

Resources

• TinyFish Documentation
• TinyFish Website
• API Keys
• Discord Community

Support

Questions or issues? Reach out at [e-mail] or join our Discord.