@kynth/ai-tools

@kynth/ai-tools

ParseRail as ready-made agent tools — parse documents, fight chargebacks, analyze contracts, match POs, screen leads, and run cited research from inside your agent loop. One import for the Vercel AI SDK, one for LangChain.

Every tool is a thin wrapper over the official @kynth/api client: auth, timeouts, and typed errors behave exactly like a direct SDK 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

npm i @kynth/ai-tools @kynth/api
# Vercel AI SDK apps also need:  npm i ai
# LangChain apps also need:      npm i @langchain/core

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

Vercel AI SDK

import { generateText } from "ai";
import { KynthCore } from "@kynth/api";
import { kynthTools } from "@kynth/ai-tools";

const client = new KynthCore({ apiKey: process.env.KYNTH_API_KEY! });

const { text } = await generateText({
  model,
  tools: kynthTools(client),
  prompt: "Build a representment packet for this dispute: …",
});

LangChain

import { KynthCore } from "@kynth/api";
import { kynthLangchainTools } from "@kynth/ai-tools/langchain";

const client = new KynthCore({ apiKey: process.env.KYNTH_API_KEY! });
const tools = kynthLangchainTools(client); // DynamicStructuredTool[]

const agent = createReactAgent({ llm, tools });

Tools

Tool	What it does
kynth_chargeback	Dispute details → representment narrative, evidence checklist, win likelihood
kynth_compare	Two document versions → every material change + risk notes
kynth_contract	Contract → parties, term, renewal, obligations, risk flags
kynth_statement	Bank/card statement → normalized transactions
kynth_po_match	Invoice vs PO vs receipt → 3-way match + discrepancies
kynth_dunning	Overdue invoice → escalation-appropriate collection sequence
kynth_screen	Lead + your ICP → web-grounded qualification verdict
kynth_research	Company/topic → multi-source, citation-backed brief
kynth_parse	Any document (PDF/image/text) → structured, validated JSON
kynth_tables	Any document → every table as clean headers + rows

Document tools accept fileUrl, raw text, or fileBase64 + fileMimeType.

Also available: the MCP server (npx @kynth/api-mcp), the Python SDK, and CrewAI tools.