# PostNitro (slim)

> PostNitro designs carousels, single-image posts and slide videos from templates and brand kits, then schedules them to six social networks. Agents use a hosted MCP server with 35 tools, a REST API, a CLI or an agent plugin.

- Full: https://www.anchorterminal.com/tools/postnitro.md (~7,650 tokens) · this version ~1,530 tokens · JSON https://www.anchorterminal.com/tools/postnitro.json · canonical https://www.anchorterminal.com/tools/postnitro
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-15
- Licence: CC BY 4.0, credit Anchor Terminal (anchorterminal.com) and link this page when you pass anything on

**E · 44.5/100 · rank #945 of 1084 · #9 in Programmatic asset production · not agent-ready · confidence medium**


Assessment: A hosted MCP server and REST API let an agent turn a topic, article or own slides into a branded carousel, image or slide video and schedule it, with OAuth, numbered rate limits and Markdown docs. No status page, security contact or idempotency key was found, and the privacy policy contradicts the vendor's no-training statement.

## Facts

- Kind: MCP server · vendor: PostNitro Inc. · category: Programmatic asset production · legal entity: PostNitro Inc. · provenance 63/100
- Endpoint: `https://mcp.postnitro.ai/mcp` (Streamable HTTP, HTTP)
- Auth: OAuth or key · pricing: Paid · x402: no · licence: Proprietary hosted service under PostNitro's Terms of Service. The CLI, agent skill and agent plugin repositories are MIT
- Probe metrics: not measured yet (probes haven't run)
- Surfaces: Hosted MCP server (35 tools), Embed REST API, CLI `@postnitro/cli`, agent skill, Agent Plugins manifest for Claude Code, Codex and Cursor, Embed SDK editor, and n8n, Zapier and Make integrations
- Outputs: PNG per slide, one PDF, MP4 for video posts, or an editable DESIGN with no render that opens in the web editor
- Publishing: LinkedIn, Instagram, TikTok, Threads, Facebook Pages and Pinterest boards, as drafts or scheduled posts, from Creator+ upward. X is export only
- Rate limits: Per key per minute, 5 for each create endpoint, 120 for status and output, 30 shared by all other endpoints
- Credits: 1 per imported slide, 2 per AI-written slide. AI images draw on a separate image quota. Unused credits do not roll over
- Free tier: Free web plan with no card. For the API, the subscription docs give 5 credits a month, but other pages and the OpenAPI document say write calls need a paid plan
- History: Embed API documented by August 2025. MCP page live by 15 April 2026 with 12 tools, 35 now. The 13 October 2026 Product Hunt launch is a relaunch of this agent offering
- Prices: Starter $15 per month (plan); Creator+ $30 per month (plan); Team+ $60 per month (plan); Embed API add-on $10 per month (plan); Embed API credit $0.04 per credit

- Scores: Reliability 42, Performance pending, Schema & documentation 77, Agent ergonomics 49, Security & auth 30, Payments & pricing 20, Task success pending, Maintenance & community 65, Transparency & trust 48 · negative events -2 · total over the 7 assessed categories
- Why: Reliability, Graded as a hosted service, the MCP server and the Embed REST API it wraps. · Schema & documentation, OpenAPI 3.1 document for the Embed API at `/.well-known/openapi/embed.json` with 13 operations. · Agent ergonomics, 35 MCP tools load together with no toolsets or read-only subset (5). · Security & auth, The MCP server runs OAuth 2.1 with PKCE S256, dynamic client registration and a revocation endpoint, but with one broad `postnitro` scope. · Payments & pricing, No x402, MPP or L402 (0). · Maintenance & community, CLI 1.5.0 on 7 October 2026, and `llms.txt` and the fact sheet are dated 7 October 2026 (30). · Transparency & trust, Closed service under Terms of Service last updated 20 May 2024 that cover the APIs, allow changes or discontinuation without notice and take…
- Sources: 36, open questions: 9, both in the full twin
- Capabilities: design.templates, design.render, design.brand, social.schedule, social.post
- JSON: https://www.anchorterminal.com/api/v1/tools/postnitro.json
- Verify (for the vendor): the badge `https://www.anchorterminal.com/badges/postnitro.svg` or a link to https://www.anchorterminal.com/tools/postnitro from a page on postnitro.ai or one of its subdomains, or the README of github.com/postnitro/postnitro-agent, then `POST https://www.anchorterminal.com/api/v1/verify` `{"slug", "url"}` or `verify_listing` at /mcp; re-checked weekly, no effect on the grade. Snippets in the full twin.

## Before you call it

1. Call `postnitro_set_defaults` once with a template, brand and AI preset, or every generate call must carry those IDs
2. Pass the `designId` from `postnitro_get_output` to scheduling, never the `embedPostId`, or the call fails with `Design not found`
3. For a LinkedIn PDF post, set `linkedinPostSettings.postType` to `document` with a 5 to 90 character `postTitle`
4. Ask for the `DESIGN` output or save as `DRAFT` when a person must approve before anything publishes
5. Keep to 5 create calls a minute per key and wait for `Retry-After` on a 429

## Connect

```bash
npm install -g @postnitro/cli
```

```bash
curl https://embed-api.postnitro.ai/template -H "embed-api-key: pn-your-api-key"
```

```bash
claude mcp add --transport http postnitro https://mcp.postnitro.ai/mcp --header "Authorization: Bearer pn-your-api-key-here"
```
Full config and headless snippets are in the full page. Through letme (picks today, calling later): https://letme.dev/postnitro

## Similar tools

| Tool | Grade | Score | Shared capabilities | Slim |
| --- | --- | --- | --- | --- |
| Canva REST APIs + MCP | B | 64.3 | design.templates, design.render, design.brand | https://www.anchorterminal.com/tools/canva.min.md |
| Zernio (formerly Late) API + MCP | B | 67.5 | social.post, social.schedule | https://www.anchorterminal.com/tools/late.min.md |
| Shotstack | B | 65.3 | design.templates, design.render | https://www.anchorterminal.com/tools/shotstack.min.md |
| Buffer API + MCP | B | 62 | social.post, social.schedule | https://www.anchorterminal.com/tools/buffer.min.md |
| Templated API + MCP | C | 61.2 | design.templates, design.render | https://www.anchorterminal.com/tools/templated.min.md |


## Panel reviews (0, desk reviews from public material, no calls made)