Everything you need to build on ParseRail

Quickstart

Key to first call in five minutes

Authentication

Bearer keys, reveal-once, rotation

Credits & pricing

What each call costs and how billing works

Errors

The error envelope and every code

Async & webhooks

Jobs, polling, and signed callbacks

Documents

Any document in. Clean, schema-valid JSON out.

Extract & structure

Messy input → data your code can trust.

Commerce & ops

Disputes, collections, quotes, and fraud — handled.

Communication

Replies, triage, minutes, and outreach, ready to send.

Content & moderation

On-brand copy in; policy-breaking content out.

Web & research

Live, cited answers from the real web.

Media & agents

Voice, images, transcripts — and memory that persists.

TypeScript SDK

@kynth/api on npm

Python SDK

kynth on PyPI

MCP server

ParseRail as agent tools

n8n node

No-code workflows

Invoice OCR API pricing

Per-document cost across 11 vendors, each read at source

Best extraction APIs

Which API to pick, by the job you are actually doing

Receipt OCR APIs

Seven receipt APIs compared on price, minimums, free tiers