The engine behind 60 production apps — and counting. Now it’s yours.
Invoices, statements, contracts, resumes — parsed to schema-valid JSON at a flat price per document. And 30 more finished-job endpoints on the same key and wallet, with 500 free credits every month. You’re only charged on success.
Documents are the spearhead.
Nine document engines, each committed to one document kind — so the JSON comes back schema-valid, field-accurate, and flat-priced. Scored in the open →
Any invoice, receipt, EOB, ERA, or COI — PDF or image — into structured, validated JSON.
A contract → parties, effective date, term, renewal, governing law, obligations, and flagged risk clauses.
An invoice — PDF, photo, or text — into vendor, dates, PO refs, tax, totals, and clean line items.
A receipt into merchant, items, totals, payment method, and an expense category — built for expense flows.
A bank or card statement into the account, the period, balances, and every transaction as a normalized row.
A resume or CV into a structured candidate profile: contact, skills, experience, education, and links.
Every table in a document — even scanned — as clean headers and rows, ready for your spreadsheet or DB.
A multi-document scan bundle classified and split: what each document is, where it starts and ends, and a summary.
Two versions of a contract or document → every material change, what it means, and the risk it carries.
…and 30 more jobs on the same wallet.
Every endpoint is a finished job with its own page and its own price — never a prompt you have to engineer.
Messy input → data your code can trust.
extract · classify · structure · normalize · match · categorize
Disputes, collections, quotes, and fraud — handled.
chargeback · dunning · po-match · quote · fraud-flag
Replies, triage, minutes, and outreach, ready to send.
summarize · sentiment · reply · triage · minutes · outreach · review-reply
On-brand copy in; policy-breaking content out.
redact · moderate · rewrite · product-copy · describe
Live, cited answers from the real web.
enrich · research · screen
Voice, images, transcripts — and memory that persists.
transcribe · memory · image · speak
60 apps run on this engine. In production. Today.
Kynth Core isn’t a wrapper we ship to other people — it’s the inference layer behind every Kynth app: the receptionist that answers calls, the desk that fights chargebacks, the agent that chases invoices. Every app is a live demo of these endpoints. Want the finished apps instead of the raw engine?
Explore the apps →TypeScript. Python. Or straight into your agent.
Typed SDKs for both stacks, and an MCP server that gives Claude and Cursor every Core capability as a native tool.
import { KynthCore } from "@kynth/api"; const core = new KynthCore(process.env.KYNTH_KEY); const res = await core.classify({ text: "My card was charged twice.", labels: ["billing", "bug", "how-to"], });
from kynth import KynthCore core = KynthCore(os.environ["KYNTH_KEY"]) res = core.summarize(text=transcript) # → summary, key points, action items
{ "mcpServers": { "kynth-core": { "command": "npx", "args": ["@kynth/api-mcp"] } } }
Start free. Pay per task.
Every price above is per finished task, charged only on success. One wallet spends on any endpoint, and credits never expire.
500 credits every month, no card. Your wallet refills to the floor on the 1st — enough to ship a real integration before you pay a cent.
Get your key →3,500 credits every month — ~20% more per dollar than the Starter pack.
Subscribe →13,000 credits every month — more per dollar than every pack, even Scale.
Subscribe →Need a one-time top-up instead? $20 → 2,000 credits · $100 → 10,500 credits · $500 → 55,000 credits. Auto-recharge keeps agents running unattended.