Entity matching

Two record sets → which rows are the same real-world thing, with confidence and reasoning. Fuzzy names, typos, aliases handled.

POST /v1/match$0.08/run · 8 credits, charged only on success

Send this

{
  "a": [
    {
      "name": "Acme Supplies Inc",
      "city": "Columbus"
    }
  ],
  "b": [
    {
      "vendor": "ACME SUPPLY, INC.",
      "location": "Columbus, OH"
    }
  ],
  "keys": [
    "name"
  ]
}

Every response carries usage — the credits burned and your remaining balance. A failed call never burns credits.

Try it live against your own key in the interactive reference; every account gets 500 free credits a month, no card.

Get this back

{
  "matches": [
    {
      "aIndex": 0,
      "bIndex": 0,
      "confidence": 0.94,
      "reason": "Same entity: name variant + same city."
    }
  ],
  "unmatchedA": [],
  "unmatchedB": [],
  "usage": {
    "credits": 8,
    "balanceRemaining": 358
  }
}

Four ways in. Same $0.08/run.

curl

curl https://api.kynth.studio/v1/match \
  -H "Authorization: Bearer ksk_live_…" \
  -H "Content-Type: application/json" \
  -d '{"a":[{"name":"Acme Supplies Inc","city":"Columbus"}],"b":[{"vendor":"ACME SUPPLY, INC.","location":"Columbus, OH"}],"keys":["name"]}'

TypeScript

import { KynthCore } from "@kynth/api";

const kynth = new KynthCore({ apiKey: process.env.KYNTH_API_KEY! });
const result = await kynth.match({
  "a": [
    {
      "name": "Acme Supplies Inc",
      "city": "Columbus"
    }
  ],
  "b": [
    {
      "vendor": "ACME SUPPLY, INC.",
      "location": "Columbus, OH"
    }
  ],
  "keys": [
    "name"
  ]
});

Python

from kynth import Kynth

client = Kynth(api_key=os.environ["KYNTH_API_KEY"])
result = client.match(
    a=[
    {
      "name": "Acme Supplies Inc",
      "city": "Columbus"
    }
  ],
    b=[
    {
      "vendor": "ACME SUPPLY, INC.",
      "location": "Columbus, OH"
    }
  ],
    keys=[
    "name"
  ],
)

MCP

// One-time setup in your MCP client (Claude, Cursor, …):
{ "mcpServers": { "kynth-core": {
    "command": "npx", "args": ["@kynth/api-mcp"],
    "env": { "KYNTH_API_KEY": "ksk_live_…" } } } }

// Then the agent just calls the kynth_match tool.

More from extract & structure

Field extraction

$0.04/call

Pull a field set you define out of any block of text. You name the fields; you get typed values with confidence.

Classification

$0.02/call

Route or tag text against your own taxonomy — a label, a confidence, and a one-line rationale.

Guaranteed structure

$0.06/call

Any messy input — text, HTML, an email — plus YOUR JSON schema → output that conforms to it. Retries and validation handled.

Get your key — 500 free credits monthly