# Kynth Core

> The AI back-end for your product.

Kynth Core is the developer platform from Kynth: a suite of 39 AI capability endpoints — the same AI primitives behind the software we run in production — behind one API key and one pay-per-call credit wallet. No subscription, no per-seat pricing; failed calls are never charged.

## How it works
- Base URL: https://api.kynth.studio
- Auth: `Authorization: Bearer ksk_live_…` (mint a key in the dashboard)
- Pricing: 1 credit = $0.01. Each endpoint burns credits at its own rate; you are only charged on a successful call. Buy credits in the dashboard.
- Response envelope: every successful call returns its result plus `usage: { credits, balanceRemaining }`.
- Errors: a stable `{ error: { code, message } }` envelope.

## Endpoints
- POST /v1/parse — Document parse. Any invoice, receipt, EOB, ERA, or COI — PDF or image — into structured, validated JSON. (10 credits · $0.10/call)
- POST /v1/extract — Field extraction. Pull a field set you define out of any block of text. You name the fields; you get typed values with confidence. (4 credits · $0.04/call)
- POST /v1/classify — Classification. Route or tag text against your own taxonomy — a label, a confidence, and a one-line rationale. (2 credits · $0.02/call)
- POST /v1/summarize — Summarize. A meeting transcript, thread, or report → a tight summary, key points, and extracted action items. (3 credits · $0.03/call)
- POST /v1/redact — PII redaction. Detect and strip names, emails, phones, SSNs, cards, and PHI from text before you store or log it. (3 credits · $0.03/call)
- POST /v1/sentiment — Sentiment. Turn a review or support message into a sentiment score, per-aspect breakdown, and the themes driving it. (2 credits · $0.02/call)
- POST /v1/contract — Contract analysis. A contract → parties, effective date, term, renewal, governing law, obligations, and flagged risk clauses. (12 credits · $0.12/call)
- POST /v1/chargeback — Chargeback representment. Dispute details → a representment narrative, an evidence checklist, the right reason code, and a win-likelihood. (15 credits · $0.15/call)
- POST /v1/enrich — Company enrichment. A domain or work email → a structured company profile: name, description, industry, HQ, size, and links. (5 credits · $0.05/call)
- POST /v1/invoice — Invoice extraction. An invoice — PDF, photo, or text — into vendor, dates, PO refs, tax, totals, and clean line items. (8 credits · $0.08/call)
- POST /v1/receipt — Receipt extraction. A receipt into merchant, items, totals, payment method, and an expense category — built for expense flows. (6 credits · $0.06/call)
- POST /v1/statement — Statement parsing. A bank or card statement into the account, the period, balances, and every transaction as a normalized row. (12 credits · $0.12/call)
- POST /v1/resume — Resume parsing. A resume or CV into a structured candidate profile: contact, skills, experience, education, and links. (8 credits · $0.08/call)
- POST /v1/tables — Table extraction. Every table in a document — even scanned — as clean headers and rows, ready for your spreadsheet or DB. (8 credits · $0.08/call)
- POST /v1/split — Document splitting. A multi-document scan bundle classified and split: what each document is, where it starts and ends, and a summary. (10 credits · $0.10/call)
- POST /v1/compare — Document comparison. Two versions of a contract or document → every material change, what it means, and the risk it carries. (15 credits · $0.15/call)
- POST /v1/structure — Structure to your schema. Any messy input — text, HTML, an email — plus YOUR JSON schema → output shaped to it, validated against your required fields and property types, with an automatic corrective retry and a `valid` flag. (6 credits · $0.06/call)
- POST /v1/normalize — Record normalization. A batch of messy records → clean canonical rows, with a change log of every fix (casing, formats, dedup-ready values). (5 credits · $0.05/call)
- POST /v1/match — Entity matching. Two record sets → which rows are the same real-world thing, with confidence and reasoning. Fuzzy names, typos, aliases handled. (8 credits · $0.08/call)
- POST /v1/categorize — Batch categorization. Up to a hundred items against your taxonomy in one call — products, transactions, tickets — each with a confidence. (3 credits · $0.03/call)
- POST /v1/dunning — Collections sequence. An overdue invoice → a ready-to-send collection sequence, escalating at the right pace and tone for how late it is. (8 credits · $0.08/call)
- POST /v1/po-match — 3-way match. Invoice vs purchase order vs receipt → matched, partial, or mismatched, with every discrepancy flagged and sized. (10 credits · $0.10/call)
- POST /v1/quote — Quote builder. A job description plus your rates → an itemized, professional quote with assumptions and scope notes spelled out. (8 credits · $0.08/call)
- POST /v1/fraud-flag — Fraud triage. An order or transaction in context → a risk score, the signals driving it, and the checks worth running before you ship. (6 credits · $0.06/call)
- POST /v1/reply — Reply drafting. A customer thread plus your context → a ready-to-send reply in the right tone, with an internal note for the agent. (5 credits · $0.05/call)
- POST /v1/triage — Ticket triage. A support ticket → priority, category, the team it belongs to, sentiment, SLA risk, and a suggested first response. (3 credits · $0.03/call)
- POST /v1/minutes — Meeting minutes. A meeting transcript → clean minutes: summary, decisions made, action items with owners, and open questions. (6 credits · $0.06/call)
- POST /v1/outreach — Outreach sequence. An enriched lead plus what you sell → a personalized outreach sequence that references what actually makes them a fit. (6 credits · $0.06/call)
- POST /v1/review-reply — Review response. A customer review → a brand-safe public response, the issues to log, and whether it needs human escalation. (3 credits · $0.03/call)
- POST /v1/moderate — Content moderation. Text or an image against YOUR policy → allow, review, or block, with the categories and excerpts that drove the call. (2 credits · $0.02/call)
- POST /v1/rewrite — Brand-voice rewrite. Any copy → your brand voice. Describe the voice or paste a sample; get the rewrite and what changed. (3 credits · $0.03/call)
- POST /v1/product-copy — Product copy. Specs and an audience → listing-ready titles, bullets, a description, and SEO keywords — per channel. (5 credits · $0.05/call)
- POST /v1/describe — Image description. An image → accessible alt text, a caption, tags, and any text found inside it. Accessibility and catalogs in one call. (3 credits · $0.03/call)
- POST /v1/research — Research brief. A company or topic → a multi-source, citation-backed brief: what it is, what changed lately, and what matters. Real web work. (50 credits · $0.50/call)
- POST /v1/screen — Lead screening. A lead plus your ICP criteria → a web-grounded qualification verdict with the evidence for and against. (10 credits · $0.10/call)
- POST /v1/transcribe — Transcription. An audio recording → accurate text with speakers and paragraph timestamps. Meetings, calls, voice notes. (10 credits · $0.10/call)
- POST /v1/memory — Agent memory. Store, search, and forget memories for your agents — semantic recall on your own namespace, no vector DB to run. (2 credits · $0.02/call)
- POST /v1/image — Image generation. A prompt → a production-ready image. Marketing visuals, product scenes, and consistent brand imagery. (10 credits · $0.10/call)
- POST /v1/speak — Text to speech. Text → natural speech audio, ready to embed. Voice notes, IVR lines, narration. (5 credits · $0.05/call)

## Credit packs (one-time, pay-as-you-go)
- Starter — $20: 2,000 credits
- Growth — $100 (+5% bonus): 10,500 credits
- Scale — $500 (+10% bonus): 55,000 credits

## SDKs & tools
- TypeScript / JavaScript SDK: `npm i @kynth/api` — https://www.npmjs.com/package/@kynth/api
- Python SDK: `pip install kynth` — https://pypi.org/project/kynth/
- MCP server (Claude, Cursor, any MCP client): `npx @kynth/api-mcp` — https://www.npmjs.com/package/@kynth/api-mcp

## Links
- Docs (quickstart, per-endpoint guides, async & webhooks): https://api.kynth.studio/docs
- Home + interactive reference (try it live): https://api.kynth.studio
- OpenAPI spec: https://api.kynth.studio/openapi.json
- Dashboard (keys + billing): https://api.kynth.studio/dashboard
- Studio: https://kynth.studio