Bypassify
Coming soon

Build on the Bypassify Core Engine.

A rewriting API for people who ship software. Send text, set the tone and strength you want, and get back a rewrite that keeps the meaning, the citations and the argument intact — with the analysis that produced it.

No keys yet · No billing yet · Waitlist only

What the API will do

The Bypassify product is one interface on top of an engine that reads a draft, decides what actually needs to change, rewrites only that, then checks its own work. The API exposes that engine directly.

It is a text-processing endpoint, not a chat wrapper. You control tone, strength, context and what must never be touched. You get back the rewritten text plus a structured account of what changed — so your product can explain itself to its own users.

01

Rewriting that keeps meaning

Every request runs through semantic preservation first. Facts, figures, names, quotes and citations are locked as protected regions before a single word is changed.

02

Style as a parameter

Tone, strength and context are explicit inputs, not prompt suggestions. The same input with the same parameters produces a consistent, explainable result.

03

Structured, inspectable output

Responses return the rewritten text plus the analysis behind it: rhythm, vocabulary, readability and what the engine changed and why.

04

Built for documents, not snippets

Long inputs are segmented, planned globally, then rewritten section by section so the argument still holds together at the end.

Where we are

  1. Now

    Private engine work

    The Bypassify Core Engine runs in production behind the product while the composition and verification layers are hardened.

  2. Next

    Closed developer preview

    A small group from the waitlist gets keys, docs and a rate-limited sandbox. Feedback shapes the request and response shape.

  3. Then

    Public beta

    Self-serve keys, usage dashboards, webhooks and SDKs for JavaScript and Python.

  4. Later

    General availability

    Stable versioned endpoints, SLAs, regional processing options and team billing.

What a request will look like

Illustrative only — these endpoints are not live. The shape is what we are designing against, and preview users get to argue with it.

curl https://api.bypassify.online/v1/rewrite \
  -H "Authorization: Bearer $BYPASSIFY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "text": "The study demonstrates a significant correlation.",
    "tone": "academic",
    "strength": "balanced",
    "preserve": ["citations", "quotes"]
  }'

Example response

{
  "id": "rw_01HZX8...",
  "output": "The study points to a correlation worth taking seriously.",
  "analysis": {
    "input_words": 7,
    "output_words": 9,
    "readability_delta": -1.4,
    "rhythm_variance": 0.38,
    "protected_regions": 0
  },
  "engine": { "version": "bce-1.x", "passes": 2 },
  "usage": { "credits": 1 }
}

Documentation, planned

Not published yet

Getting started

Keys, your first request, and the shape of a rewrite.

Authentication

Bearer keys, key scoping, rotation and revocation.

Rewriting

Tone, strength, context, preservation rules and locale.

Credits

How usage is measured and how to check a balance.

Rate limits

Per-key limits, burst behaviour and retry guidance.

Errors

Error codes, retry-safe failures and idempotency keys.

Webhooks

Async jobs for long documents and delivery guarantees.

Examples

Editors, CMS pipelines, batch jobs and queue workers.

SDKs

Official JavaScript and Python clients.

Changelog

Versioned changes to endpoints and response fields.

Pricing direction

Indicative monthly pricing while we size the preview. Nothing is billable and no card is collected anywhere on this page.

Starter

Soon

$9.99

per month

Side projects and prototypes.

  • Sandbox + production keys
  • Standard rate limit
  • Community support

Pro

Soon

$24.99

per month

Production apps with real traffic.

  • Higher rate limits
  • Webhooks for long documents
  • Email support

Business

Soon

$79.99

per month

Teams and platforms.

  • Team keys and usage split
  • Priority processing
  • Direct support channel

How it will be secured

Keys are scoped, rotatable and revocable, and are only ever shown once. Every request is authenticated over TLS, rate limited per key, and validated before it reaches the engine.

Request payloads are processed for the response and are not sold or handed to third parties for model training. Long-document jobs use signed webhooks so you can verify that a callback really came from us.

Vulnerability reports go to bypassify.ai@gmail.com.

Who it is for

  • Writing tools and editors
  • Education platforms
  • Publishing and content teams
  • Marketing and SEO tooling
  • Agencies and localisation
  • Internal documentation systems

Straight answers

When does the API launch?
There is no public date yet. The closed preview comes first, and everyone on the waitlist hears before it opens. We would rather ship it late than ship it unreliable.
Can I get a key today?
No. Nothing on this page is live yet — there are no keys, no endpoints and no billing. The waitlist is the only thing that works right now.
Is the pricing final?
No. The numbers here are the direction we are planning, not a commitment. Preview users will see the final pricing before anything is charged.
Will responses be deterministic?
Same input with the same parameters gives a consistent result within a version. Engine versions are pinned in the response so you can tell when behaviour changes.
What happens to text I send?
It is processed to produce the response and is not sold or used to train third-party models. The full data terms will ship with the preview.

Introducing the Bypassify API

Most rewriting endpoints available today are a prompt with a price attached. You send text, a general-purpose model returns different text, and neither you nor your users can say what changed or why. That is fine for a demo and a liability in a product.

The Bypassify Core Engine was built the other way around. It analyses the draft first — sentence rhythm, vocabulary, structure, paragraph roles — and produces a plan. It locks the parts that must survive verbatim: quotes, citations, figures, names, code. Only then does it rewrite, and it rewrites the specific things the plan identified rather than reflowing the whole document and hoping the meaning survived.

After the rewrite there is a verification pass. Meaning, facts, grammar and flow are scored, and anything that regressed is revised again — targeted, not global. That loop is the difference between output you can ship to a user and output you have to read twice before trusting.

The API takes that pipeline and makes it callable. One endpoint, explicit parameters, structured responses, versioned engine behaviour. If you are building an editor, an education platform, a CMS pipeline or an internal documentation tool, you get the engine without rebuilding six months of analysis work.

It is not open yet, and we are not going to pretend otherwise with a fake launch date. The engine is still being hardened in production behind the product. When the closed preview opens, the waitlist goes first.

Join the developer waitlist

Tell us what you would build. The closed preview is small, and we pick it from what people write here — real use cases first, not signup order.

The future of AI rewriting is becoming programmable.

Join developers preparing to build with the Bypassify Core Engine.