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2026-06-17

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WordPress Plugin (Live)

The official StealthGPT WordPress plugin is now available on the WordPress.org directory. Generate long-form content or humanize existing text directly in WordPress — the result lands in a draft post for review before publishing.

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What’s New

  • Live on WordPress.org: install from Plugins → Add New → search “StealthGPT”
  • Bring your own API key; full generation and humanization, both written to drafts
  • Async by design — runs complete via webhook with background polling fallback

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Where to Start

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2026-06-11

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More Integrations: Zapier & WordPress (in review)

Two more integrations are built and currently in review on their respective marketplaces:
  • Zapier app — Generate Long-Form Content, Humanize Text, and Get Run Status across 7,000+ apps. In review by Zapier.
  • WordPress plugin — generate or humanize content into draft posts, BYO API key. In review for the WordPress.org directory.
Until they’re live, automate StealthGPT via the n8n node, MCP clients, or the async REST API.

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Where to Start

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2026-06-08

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n8n Node (Verified)

StealthGPT is now an official, n8n-verified node, n8n-nodes-stealthgpt — listed on the n8n integrations directory. Start content-pipeline runs and humanize text directly inside n8n workflows, using the async API under the hood.

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What’s New

  • Verified by n8n: available on self-hosted and n8n Cloud (instance owner enables once)
  • Operations: Content Generation and Text Humanization, each with Start Run and Get Run Status
  • Wait for completion: start-and-wait (poll until terminal) or start-only for webhook/manual polling

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Where to Start

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2026-06-02

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MCP Server + OAuth

StealthGPT now ships a remote MCP (Model Context Protocol) server, so AI agents and MCP-aware clients can generate and humanize content as a tool. Connect it in Cursor, Claude Desktop/Code, and as a one-click custom connector in claude.ai (web).

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What’s New

  • MCP endpoint: https://www.stealthgpt.ai/api/mcp/mcp (Streamable HTTP)
  • Tools: generate_content, humanize_text, get_run_status
  • Dual auth: OAuth 2.1 (one-click sign-in for claude.ai web) or Authorization: Bearer YOUR_API_TOKEN (Cursor, VS Code, Claude Desktop, CLIs) — both resolve to the same account
  • Async by design: tools return a runId; poll get_run_status until terminal

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Where to Start

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2026-05-28

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Async Writer & Humanizer Runs

Writer & Humanizer now supports native async runs for long-running humanization. Create a run with POST /api/stealthify/runs, poll GET /api/stealthify/runs/{runId}, and optionally receive a terminal webhook callback through webhookUrl.

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What’s New

  • New create endpoint: POST /api/stealthify/runs
  • New polling endpoint: GET /api/stealthify/runs/{runId}
  • Idempotent create retries: send idempotency-key to avoid duplicate queued runs
  • Webhook callbacks: receive completed, failed, or cancelled payloads at webhookUrl

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Compatibility

The existing POST /api/stealthify endpoint is unchanged and remains supported for current API clients.

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Where to Start

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2026-05-27

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Async Stealth Agent Runs

Stealth Agent now supports native async runs for long-running integrations. Create a run with POST /api/stealthify/agent/runs, poll GET /api/stealthify/agent/runs/{runId}, and optionally receive a terminal webhook callback through webhookUrl.

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What’s New

  • New create endpoint: POST /api/stealthify/agent/runs
  • New polling endpoint: GET /api/stealthify/agent/runs/{runId}
  • Idempotent create retries: send idempotency-key to avoid duplicate queued runs
  • Webhook callbacks: receive completed, failed, or cancelled payloads at webhookUrl

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Where to Start

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2026-04-27

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AI Detector Endpoint

A new POST /api/stealthify/detect endpoint exposes the same AI-detection backend that powers the AI Detector tool on the website. Submit text and receive a howLikelyToBeDetected score (0-100) using the standard Stealth API authentication and billing model.

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What’s New

  • New endpoint: POST /api/stealthify/detect
  • Request body: { "text": string } (max 3,000 words)
  • Response: howLikelyToBeDetected (0-100), wordsSpent, remainingCredits, billingMode, meteredChargedCredits
  • Billing: charged words = input words (1 charged word per input word)

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Where to Start

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2026-04-27

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Business Mode Removed, Replaced by Stealth Agent

Business mode on /api/stealthify has been removed and replaced by the new Stealth Agent endpoint. Stealth Agent runs a full pipeline (research → draft → optional fact-check → humanize → optional images) in a single call, producing higher-quality long-form output than the previous Business engine.

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What’s Changed

  • business flag removed: The 10x business engine no longer runs. The business field is still accepted in /api/stealthify request bodies for backward compatibility but has no effect — no client changes are required.
  • Billing simplified: All /api/stealthify requests are billed at the standard rate (input words + output words). The 10x business multiplier no longer applies.
  • Migration path: Workloads that previously relied on Business mode (academic, SEO long-form, professional posts) should switch to POST /api/stealthify/agent.

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Where to Start

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2026-04-17

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Business Mode Temporarily Disabled

Business mode on /api/stealthify is currently disabled.

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What’s Changed

  • business flag ignored: Requests are processed with the standard engine regardless of whether business is sent as true or false
  • Standard billing applied: All /api/stealthify usage is billed at the standard rate (input words + output words), with no 10x Business multiplier
  • Schema unchanged: The business field is still accepted in request bodies for backward compatibility; no client changes are required
See the Writer & Humanizer endpoint, Advanced Usage, and Pricing pages for details.
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2026-04-09

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Stealth Agent API

Documentation is available for POST /api/stealthify/agent: multi-step Stealth Agent generation (academic, SEO, or social) with the same Stealth API authentication and billing model as /api/stealthify. See Stealth Agent.
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2026-04-07

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Free-to-Start API Billing

StealthGPT API billing has moved to a free-to-start pay-as-you-go model.

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What’s Changed

  • Free activation flow: New users now activate API billing by adding a payment method instead of buying a fixed starter pack
  • Usage-based invoicing: API usage is billed automatically as pay-as-you-go
  • Tiered billing thresholds: Invoicing thresholds now scale by tier based on spend within each billing period
  • Automatic tier advancement: Accounts can move up to higher invoice thresholds automatically as billing-period spend increases; for higher limits or custom arrangements, email joey@stealthgpt.ai

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Impact for Existing Users

  • Users with prepaid words: Existing balances continue to be used first with no interruption
  • Legacy users: If prompted, accept updated billing terms in the dashboard to keep uninterrupted API access
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2026-02-23

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Pay-As-You-Go Billing Enabled

StealthGPT API now supports pay-as-you-go billing after your starter/prepaid words are used.

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What’s New

  • Hybrid Billing Model: Start with free starter access after activation/payment setup (and/or prepaid words), then continue automatically on usage-based billing
  • Standard Usage Rate: $0.20 per 1,000 words for standard requests (business=false)
  • Business Usage Rate: $2.00 per 1,000 words for business requests (business=true)
  • Legacy Account Action Required: Legacy users must accept the new terms in their billing dashboard to continue billing under the updated model

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How It Works

After your prepaid word balance reaches zero, requests continue without interruption and usage is billed automatically based on endpoint mode and word consumption.
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2025-09-09

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New Detector Optimization

You can now optimize your content for specific AI detection tools using the new detector parameter.

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What’s New

  • Detector Parameter: Choose between "turnitin" (default) or "gptzero" to optimize your content for different detection systems
  • Automatic Optimization: The API automatically adjusts generation settings based on your selected detector
  • Enhanced Compatibility: Improved performance across different AI detection platforms

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Getting Started

Simply add the detector parameter to your /api/stealthify requests to get content optimized for your preferred detection tool.
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2025-05-19

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Tokens Deprecated, Words Introduced

The StealthGPT API now uses a word-based system instead of tokens. All references to tokens have been replaced with words throughout the documentation and API responses.

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How Words Are Counted

For the /api/stealthify endpoint, the cost is now calculated as input words + output words. This means you are charged for the total number of words in your prompt plus the words in the generated or rephrased output. For shorter requests, this results in a lower cost; for longer requests, the difference is minimal, making the new system more transparent and fair.

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Deprecated Fields in /api/stealthify

  • tokensSpent (use wordsSpent instead)
  • systemTokensSpent
  • totalTokensSpent

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New Field

  • wordsSpent (number of words used for content generation or rephrasing)