kynth-crewai

ParseRail tools for CrewAI — parse documents, fight chargebacks, analyze contracts, match POs, screen leads, and run cited research from inside your crew.

Every tool is a thin BaseTool over the official kynth SDK: auth, timeouts, and typed errors behave exactly like a direct client call, and failed calls never burn credits. Each tool's description carries its exact price, so cost-aware agents can budget calls. The full machine-readable rate card lives at api.kynth.studio/pricing.json.

Install

pip install kynth-crewai crewai        # or: pip install "kynth-crewai[crewai]"

Get a key (and 500 free credits every month, no card) at api.kynth.studio.

Use

from crewai import Agent
from kynth_crewai import kynth_tools

agent = Agent(
    role="AR analyst",
    goal="Get overdue invoices paid",
    backstory="…",
    tools=kynth_tools(api_key="ksk_live_..."),  # or set KYNTH_API_KEY
)

Or pick individual tools (and share one client):

from kynth import Kynth
from kynth_crewai import KynthChargebackTool, KynthDunningTool

client = Kynth(api_key="ksk_live_...")
tools = [KynthChargebackTool(client=client), KynthDunningTool(client=client)]

Tools

Document tools accept file_url, raw text, or file_base64 + file_mime_type.

Also available: the TypeScript SDK, Vercel AI SDK / LangChain tools, and the MCP server.