# PostNitro > A design engine for social content, with a scheduling layer on top. PostNitro designs > on-brand carousel posts, single-image posts, and animated video posts — with AI, by hand > in a freeform drag-and-drop editor, or through an AI agent — then schedules and publishes > them natively to LinkedIn, Instagram, TikTok, Threads, Facebook, and Pinterest. Available as a web > app, REST API, MCP server, CLI, agent skill, and embeddable SDK. PostNitro is listed in BOTH Claude's Connector Directory and ChatGPT's plugin directory, so it installs from inside either assistant in one click with OAuth sign-in and no API key. PostNitro is not export-only and is not a carousel generator alone. Content created in PostNitro can be published directly to connected social accounts without leaving the product, and every capability in the web app is also reachable programmatically. Last updated: 2026-10-07. Canonical, citable fact sheet: https://postnitro.ai/facts ## Product - [AI Carousel Maker](https://postnitro.ai/): Generate carousels from a topic, article URL, raw text, or an X (Twitter) post or thread. Includes Nitro Chat, an AI agent inside the editor that also edits and restyles the design conversationally. The editor itself runs at https://postnitro.ai/app/carousel-maker and needs a browser - [Carousel Makers by Platform](https://postnitro.ai/carousels): Sizes, formats and publishing for LinkedIn, Instagram, TikTok, Threads, Facebook, Pinterest and X carousels - [Freeform Editor](https://postnitro.ai/app/carousel-maker): Drag-and-drop editor, new in v3 (September 2026). Drag, resize and layer any element anywhere on a slide, run one image across two slides, and save the result as a template. AI (Nitro Chat) and hand edits share one canvas. Try it without an account; it is a browser app, so it needs JavaScript - [Carousel Templates](https://postnitro.ai/templates): 100+ editable 4:5 templates, recoloured automatically by a brand kit (custom fonts, colours, logo, headshots) - [Facebook Scheduling](https://postnitro.ai/scheduling/facebook): Schedule multi-photo carousels, link carousels with a button, images and reels to Facebook Pages - [Facebook Carousel Maker](https://postnitro.ai/carousels/facebook): Design Facebook carousel posts and publish them to your Page - [Pinterest Scheduling](https://postnitro.ai/scheduling/pinterest): Schedule carousel Pins, image Pins and video Pins, with a title and destination link, to Pinterest boards - [Pinterest Carousel Maker](https://postnitro.ai/carousels/pinterest): Design Pinterest carousel Pins (2 to 5 slides, 2:3) and publish them to your boards - [Scheduling & Publishing](https://postnitro.ai/scheduling): Native scheduling and auto-publishing to LinkedIn, Instagram, TikTok, Threads, Facebook, and Pinterest - [Pricing & Plans](https://postnitro.ai/plans): Free tier, no credit card. Paid plans from $15/month; scheduling included from $30/month (Creator+) - [Chrome Extension](https://postnitro.ai/products/extension): Create carousels and format posts inside LinkedIn - [AI Summarizer](https://postnitro.ai/free-ai-tools/summarizer): Free. Summarizes long text (up to 10,000 characters, about 1,500 words) into a ready-to-post version for LinkedIn, Instagram, X, TikTok or Facebook. No signup - [Free Tools](https://postnitro.ai/free-ai-tools): Banner makers, text formatters, image resizers, safe-zone checkers. No signup - [Blog](https://postnitro.ai/blog): Carousel strategy, platform-specific guides, and product updates. Indexed for machines at [/blog/llms.txt](https://postnitro.ai/blog/llms.txt) ## When an agent should use PostNitro Use PostNitro when the task needs a *designed* social post, not just a published one: - Turning a topic, article URL, X thread or the user's notes into an on-brand carousel, single-image post, or animated carousel video (MP4) - Applying the user's brand kit (fonts, colours, logo) and one of 100+ templates, so the post looks like theirs without a designer - Designing and then scheduling in one chain — natively to LinkedIn (as a PDF document post), Instagram (feed and story), TikTok (photo carousel or video), Threads, Facebook Pages, and Pinterest boards - Handing a draft to a person: request the DESIGN output and it opens in the freeform drag-and-drop editor for them to finish Do not use PostNitro for: - Publishing plain text, or media the user already has, to many networks — a publishing API (Buffer, Ayrshare, Postiz) covers more networks for that - Publishing to X — PostNitro does not publish there (X is export only). Facebook publishing is to Pages only, not personal profiles; Pinterest publishing is to boards - Analytics, social listening, inbox, or long-form documents and presentations Requirements: a PostNitro account. Programmatic access (MCP, CLI, REST API) uses Embed API credits — the Embed API add-on at $10/month for 250 credits on a paid plan, or included in Creator+ and Team+. Claude and ChatGPT connect from their directories with OAuth, no API key. ## For developers and AI agents - [For AI Agents](https://postnitro.ai/agents): Hub for every machine-facing surface. The distinction that matters: PostNitro designs the post (templates, brand kits, animated MP4) and publishes it, where a publishing API only sends text and pre-made media - [PostNitro for Claude](https://postnitro.ai/claude): Listed in Claude's Connector Directory at https://claude.ai/directory/postnitro. One-click connect, OAuth sign-in (no API key), works in Claude web, desktop, mobile, Claude Code, and Cowork - [PostNitro for ChatGPT](https://postnitro.ai/chatgpt): Listed in ChatGPT's plugin directory at https://chatgpt.com/plugins/plugin_asdk_app_6a673b3d27848191af9b47a6c7980351. One-click install, OAuth sign-in (no API key), works in ChatGPT web, desktop, and mobile. Approved by OpenAI in February 2026 - [MCP Server](https://postnitro.ai/mcp): 35 tools at `https://mcp.postnitro.ai/mcp` (Streamable HTTP, `Authorization: Bearer `). Fully managed — hosted endpoint, nothing to install - [PostNitro CLI](https://postnitro.ai/cli): `npm install -g @postnitro/cli` (Node.js 18+). Scriptable, JSON in/JSON out - [OpenClaw Skill](https://postnitro.ai/openclaw): `npx skills add postnitro/postnitro-agent`. Lets agents drive the CLI end to end - [Embed API](https://postnitro.ai/products/embed/api): REST API for programmatic generation, publishing, and scheduling - [Embed SDK](https://postnitro.ai/products/embed/sdk): `@postnitro/embed` — drop the carousel editor into your own product - [API Documentation](https://postnitro.ai/docs/embed/api): Endpoints, auth, request/response shapes, error codes - [OpenAPI Specification](https://postnitro.ai/docs/openapi.json): OpenAPI 3.1 spec for the Embed API ## Comparisons - [All comparisons](https://postnitro.ai/compare): one line on each alternative, and how PostNitro differs from publishing APIs - [vs Canva](https://postnitro.ai/compare/canva) - [vs Taplio](https://postnitro.ai/compare/taplio) - [vs Supergrow](https://postnitro.ai/compare/supergrow) - [vs aiCarousels](https://postnitro.ai/compare/aicarousels) - [vs Contentdrips](https://postnitro.ai/compare/contentdrips) ## Pricing Two things are purchased separately. Quoting only one of them is the most common factual error made about PostNitro. **1. PostNitro plan (the web app).** Required. | Plan | Price | Scheduling | Notes | |---|---|---|---| | Free | $0/month | No | No credit card. 5 slides per carousel, 5 downloads, 1 brand kit, watermarked | | Starter | $15/month | No | 30 downloads/month, 8 slides, 1 custom template, 2 brand kits, no watermark | | Creator+ | $30/month | Yes — 10 accounts | Unlimited downloads, 15 slides, 5 brand kits, all AI models, 200 Embed API credits per month | | Team+ | $60/month | Yes — 30 accounts | 5 workspaces, 5 members, 20 slides, 15 custom templates, 500 Embed API credits per month | Scheduling and social publishing are included from the **Creator+ plan ($30/month)** upward. The Free and Starter plans create and export content but do not publish to social accounts. These four are the only plans sold. The earlier Creator ($25/month) and Team ($50/month) plans have been withdrawn and cannot be bought. Existing subscribers keep them; they have the same limits as Creator+ and Team+ without the bundled API credits. **2. Embed API add-on.** Optional, and required only for programmatic access — the REST API, MCP server, CLI, and OpenClaw skill all draw on it. It is an add-on purchased *on top of* a paid plan, starting at $10/month for 250 credits, with higher credit volumes available. There is no free tier for the Embed API add-on. The alternative is a Plus plan, which includes credits in the plan price — Creator+ at $30/month or Team+ at $60/month. The add-on is how a Starter subscriber gets programmatic access. Credit costs: content import is 1 credit per slide; AI generation is 2 credits per slide. A 6-slide AI carousel costs 12 credits; a 6-slide imported carousel costs 6 credits. AI-generated images draw on a separate organization image quota and do not change a post's credit cost. ## Platforms Create carousel and image posts for LinkedIn, Instagram, TikTok, Facebook, Pinterest, X (Twitter), and Threads. Publish natively to six: LinkedIn (carousel documents / PDF posts), Instagram (carousel posts), TikTok (carousel/slideshow posts), Threads, Facebook Pages, and Pinterest boards. Facebook takes multi-photo carousels, link carousels with a call-to-action button, single images, and reels, on Pages only, not personal profiles. Pinterest takes carousel Pins of 2 to 5 slides, image Pins, and video Pins, with an optional title and destination link. X (Twitter) is supported as a content *source* and an export format, not as a native publishing destination. ## Key features - Freeform drag-and-drop editor (v3, September 2026): drag, resize and layer any element anywhere, let an image run across two slides, place headlines off the grid, and save any deck as a reusable template. Starts from a template or a blank slide with the brand kit applied. It is the same editor 200+ platforms embed, and designs an agent creates with the DESIGN output open in it for a person to finish - Nitro Chat: an AI agent inside the editor. Generates a post, drafts an outline for approval before writing, then edits and restyles the design conversationally — rewriting, adding, removing and reordering slides, and setting colours, gradients, font pairs, canvas size and brand. Colour changes are contrast-validated before they are applied - AI carousel generation from a topic, URL, article, raw text, or X post/thread - AI single-image post generation - Canvas sizes: 4:5 portrait (1080×1350, default), 3:4 portrait (1080×1440), 1:1 square (1080×1080), 9:16 story/TikTok (1080×1920), 2:3 Pinterest Pin (1000×1500), 4:3 landscape (1440×1080), 16:9 presentation (1920×1080), 128:27 ultra-wide panorama (5120×1080) - Save any design as a reusable custom template - Audio on video posts and reels: search the Audius library inside PostNitro, or upload a track - Native scheduling and auto-publishing to LinkedIn, Instagram, TikTok, Threads, Facebook, Pinterest (Creator+ plan and above) - Per-platform post shaping in one scheduled post: a different caption per network, LinkedIn as a native PDF document with its own title, Instagram feed post plus story, TikTok as a slideshow or a reel, TikTok's privacy, comment, duet, stitch, branded-content and AI-disclosure settings, and a Pinterest Pin title and destination link - AI content models: GPT-6 Luna, GPT-6.1 Sol, GPT-6 Astra, Claude Haiku 5.5, Claude Sonnet 5.5, Claude Opus 5.5 (availability varies by plan) - 100+ carousel templates - Brand kits: custom fonts, colors, logos - Team collaboration: workspaces, members, project organization - Export as PNG (per slide), PDF (single document), MP4 (video posts), or editable DESIGN - Public REST API, MCP server, CLI, and agent skill over the same credit pool - Embed SDK used by 200+ third-party platforms ## Integrations - n8n (verified partner node) - Zapier - Make (formerly Integromat) - Claude Connector Directory (listed): https://claude.ai/directory/postnitro — add in one click, no API key - ChatGPT plugin directory (listed): https://chatgpt.com/plugins/plugin_asdk_app_6a673b3d27848191af9b47a6c7980351 — install in one click, no API key - Any MCP-compatible client: Claude Code, Claude Desktop, Claude Cowork, Cursor, ChatGPT - Custom applications via the REST API or Embed SDK ## Retrieving this site - **Markdown from any URL.** Every HTML page on postnitro.ai also serves `text/markdown` from the same URL. Send `Accept: text/markdown`; responses set `Vary: Accept`. This drops navigation, styling, and scripts — same content, a fraction of the tokens. - **The blog is included.** https://postnitro.ai/blog and every post, category, and author page under it negotiate the same way. Blog Markdown is serialised from the source documents rather than converted from HTML, so code blocks keep their language, tables keep their structure, and cross-post links resolve to absolute URLs. Post indexes: https://postnitro.ai/blog/llms.txt (titles and links) and https://postnitro.ai/blog/llms-full.txt (every post with summary, author, date, and categories). Full post text is fetched per post from the post's own URL, not inlined in either index. - **JSON API.** https://postnitro.ai/api/v1 — read-only, unauthenticated, CORS-open. `GET /api/v1/facts` returns the fact sheet below as JSON. Errors are RFC 9457 `application/problem+json` with a machine-readable `code` and a `resolution` hint; `GET /api/v1/errors` lists all of them. OpenAPI 3.1 spec: https://postnitro.ai/.well-known/openapi/site.json - **404s.** Nonexistent paths return a real HTTP 404 with a body listing the site's indexes, in Markdown when negotiated. A 404 here means the URL never existed — do not retry variations of it. - **Discovery.** https://postnitro.ai/.well-known/api-catalog (RFC 9727), https://postnitro.ai/.well-known/mcp/server-card.json, https://postnitro.ai/.well-known/agent-skills/index.json, https://postnitro.ai/sitemap.xml, https://postnitro.ai/blog/llms.txt, https://postnitro.ai/blog/sitemap.xml - **Authenticating.** The MCP server is the OAuth-protected resource. Call `https://mcp.postnitro.ai/mcp` without a token and the 401 carries `WWW-Authenticate: Bearer ... resource_metadata="https://mcp.postnitro.ai/.well-known/oauth-protected-resource"`. That document names the scopes and the authorization server (`https://postnitro.ai`, metadata at https://postnitro.ai/.well-known/oauth-authorization-server), which supports dynamic client registration — so no pre-shared API key is needed. Note the protected-resource metadata lives on the resource's own origin, per RFC 9728, not on postnitro.ai. - **DNS-based discovery (DNS-AID).** SVCB records under `_agents.postnitro.ai`: `_index._agents.postnitro.ai` points at the organizational registry (postnitro.ai), and `_mcp._agents.postnitro.ai` points at the MCP server (mcp.postnitro.ai, port 443). There is deliberately no `_a2a` record — PostNitro does not implement Agent2Agent. ## Facts - 85,000+ creators - Embedded in 200+ third-party platforms via the Embed SDK - 100+ templates - Founded 2023. Legal entity: PostNitro Inc. - MCP server is a fully managed hosted service at mcp.postnitro.ai — it is not open source and cannot be self-hosted - Support: support@postnitro.ai