calmposts vs OpenTweet
Both schedule posts to X and let AI agents in through an API and MCP. They differ in the free plan, the webhooks and how much of your X account they ask for.
| Feature | calmposts | OpenTweet |
|---|---|---|
| Price | Free plan; Pro $19, Team $39 a month | Pro $19.99, Advanced $29, Agency $49 a month; annual billing saves about 17–21% |
| Social accounts | Free 1 · Pro 2 · Team 10 | 1, up to 3 or up to 10 X accounts |
| Posts a day | Pro 30 · Team 150 | 20, 100 or 300 |
| Posts with a link a month | Pro 30 · Team 150 | 30, 300 or 600 |
| Free plan | Yes: write, plan and publish through X's post window | No. A 7-day trial, card required |
| Networks | X now; Bluesky, Threads, LinkedIn, Instagram and Facebook next | X, with cross-posting to Bluesky and LinkedIn |
| API and MCP | REST API, hosted MCP server with OAuth for claude.ai and ChatGPT, local MCP binary | REST API, hosted and local MCP servers, CLI |
| API rate limit | 60 requests a minute per key | 60, 300 or 600 a minute and 1,000, 10,000 or 30,000 a day, by plan |
| Webhooks | Post published, post failed, waiting for approval, account needs reconnecting | None in their API docs |
| X permissions | Five OAuth 2.0 scopes: read and write posts, read the profile, upload media, stay signed in. No DMs | The consent screen we saw asked to read, send and delete DMs and to change profile settings; X showed “Sensitive permissions requested” |
| Operator named in the terms | Being added to the terms | No company, jurisdiction or address in their terms or privacy policy (checked 18 October 2026) |
Where OpenTweet is ahead
- Higher limits on its top plan: 300 posts a day and 600 posts with links a month on Agency.
- An AI studio with several models, plus image and video generation.
- X analytics, an evergreen queue that reposts your best posts, X Articles and a Chrome extension.
- Cross-posting to Bluesky and LinkedIn today.
Where calmposts is different
- It asks X for five scopes and never for your direct messages.
- A free plan that needs no card.
- Webhooks, so your systems hear about a published post, a failure or an account to reconnect without polling.
- An agent's post waits for your approval, in the app or in Telegram.
Sources
- OpenTweet pricing
- OpenTweet API docs
- OpenTweet help: connecting an X account
- OpenTweet terms of service
- OpenTweet privacy policy
- X API pricing
Prices and features change. We read OpenTweet's pricing and API pages on 20 October 2026, and its consent screen and terms on 18 October 2026. If something here is out of date, write to us and we will correct it.
Try calmposts on the free plan
Connect X, write a few posts, see how the queue feels. No card needed.
Start free