X API alternative for AI agents
Chirpie vs X API
X's own first-party developer API, formerly the Twitter API
Chirpie lets an AI agent post to X without building on the X API itself. Calling X directly means per-request billing, token refresh, your own scheduler and thread chaining. Chirpie wraps the posting side of the X API, adds Bluesky, LinkedIn, Threads, Mastodon, Instagram, Facebook and Telegram, and works from Claude, ChatGPT or any MCP client.
50 free posts a month with the API and MCP server. Read the docs
Chirpie and X API, side by side
X API column checked on 28 September 2026; the bracketed numbers are its sources.
| Capability | Chirpie | X API |
|---|---|---|
| Platforms | 8 live: X, Bluesky, LinkedIn, Threads, Mastodon, Instagram, Facebook, Telegram. Coming soon: Pinterest, TikTok, YouTube, Google Business Profile, and LinkedIn Pages. | X only |
| 1,000 posts without links | Covered by the plan quota | $15 in usage[1] |
| 1,000 posts with a URL | Plan + $0.25 per X link post | $200 in usage[1] |
| Link posts on your own X keys | Nothing added by Chirpie | $0.200 each, billed by X[1] |
| Reading post metrics | Included in plan analytics | $0.005 per post read, $0.001 per owned read[1] |
| Scheduling | Yes | No schedule field on POST /2/tweets[2] |
| Access tokens | Refreshed for you | Two hours; refresh with offline.access[4] |
| Rate limits | Handled for you | x-rate-limit headers you track[5] |
| Official SDKs and CLI | TypeScript SDK, CLI | XDK (TypeScript, Python), xurl CLI[6] |
| MCP server | Hosted, posts to every live platform | Hosted X MCP, through xurl and your own X app[7] |
| Threads | One call; rolled back if a part fails | One request per post, each replying to the last[3] |
| Endpoint coverage | Posting, deletion, replies, post metrics | All of X API v2; some endpoints Enterprise only[9] |
How Chirpie and X API differ
This page compares building on X's first-party API with posting through Chirpie, which itself calls that API. Going direct is a reasonable choice for an X-only product, and X now ships its own SDKs, CLI and MCP server. What you take on is per-request billing, two-hour tokens to refresh, your own scheduler, your own metrics store, and reply chaining for threads. What you give up by using Chirpie is every X endpoint Chirpie does not wrap, which is most of them.[6][7][1][4]
What Chirpie and X API cost at 1, 3 and 10 accounts
Each row prices the cheapest paid plan on each side that covers that many connected accounts, from X API's published prices on 28 September 2026.
| Accounts | Chirpie | X API |
|---|---|---|
| 1 | $9/mo Agent: 300 posts/mo, 1 account Free plan also covers 1 account, at 50 posts/mo. | $4.50 in usage Pay-per-use: 300 posts without links The same 300 posts with a URL would be $60 in usage. |
| 3 | $19/mo Starter: 1,000 posts/mo, 3 accounts | $15 in usage Pay-per-use: 1,000 posts without links X only. Two accounts on other networks mean two more integrations. |
| 10 | $49/mo Pro: 5,000 posts/mo, 10 accounts | $75 in usage Pay-per-use: 5,000 posts without links The same 5,000 posts with a URL would be $1,000 in usage. |
- X sells self-serve access pay-per-use, with no subscription and no minimum spend: $0.015 per post, $0.200 per post with a URL, $0.005 per post read, and $0.001 per read of your own resources. Credits are bought up front.[1]
- Existing Basic and Pro subscribers kept their plans when pay-per-use launched and can opt in to it.[8]
- Chirpie includes posts without links in the plan quota and passes X's URL charge on as $0.25 per X link post on paid plans. X accounts connected with your own X API keys carry no Chirpie surcharge; X bills your developer account directly.[1]
Posting one update with X API and with Chirpie
X API (direct)[2]
// POST https://api.x.com/2/tweets. You own the OAuth refresh loop.
const accessToken = await refreshIfExpired(stored); // you write this
const res = await fetch("https://api.x.com/2/tweets", {
method: "POST",
headers: {
Authorization: `Bearer ${accessToken}`,
"Content-Type": "application/json",
},
body: JSON.stringify({ text: "Shipped: our new changelog is live." }),
});
// A thread is one request per post, each replying to the previous id.
// Rate limits arrive as response headers you track yourself.Chirpie (SDK)
import { ChirpieClient } from "@chirpie/sdk";
const chirpie = new ChirpieClient({ apiKey: process.env.CHIRPIE_API_KEY! });
// One call. Chirpie handles OAuth, token refresh, and per-platform formatting.
const post = await chirpie.createPost({
account_id: "acct_your_account_id",
text: "Shipped: our new changelog is live.",
});
console.log(post.id, post.status);Chirpie and X API: common questions
Can Claude post to X through Chirpie?
Yes. Add Chirpie from the Claude Connectors Directory, sign in, connect your X account, and ask Claude to post or schedule. Chirpie calls the X API for you, so there is no X developer app to register unless you choose to bring your own keys.
How much does the X API cost?
X's published pay-per-use rates are $0.015 per post created, $0.200 per post containing a URL, $0.005 per post read, and $0.001 per read of your own resources, with no subscription and no minimum spend; you buy credits up front. The URL rate is the line people miss: a thousand link posts is $200.
Does Chirpie charge extra for posting links to X?
Yes. X charges $0.200 for each post with a URL, so Chirpie meters X link posts at $0.25 each on paid plans instead of raising every plan price. Free-plan accounts cannot post links to X. Connect an X account with your own X API keys and the surcharge does not apply; X bills you directly.
Is going through Chirpie cheaper than calling the X API directly?
For posts with links, roughly even: X charges $0.200 either way and Chirpie's per-post charge covers that plus everything around it. For plain posts at volume, direct can be cheaper, since $0.015 a post has no monthly floor. The bigger difference is what you do not build: scheduling, token refresh, metrics storage and thread chaining.
Does X have its own MCP server?
Yes. X documents a hosted MCP server that you reach through its xurl tool with your own X developer app, alongside a docs MCP server and an open-source reference server. It covers X only. Chirpie's hosted server at chirpie.ai/mcp posts to every platform you connect and needs no X developer app.
Sources
Facts checked on . Vendors change pricing, so check the source before deciding. Spotted something out of date? Tell us and we will correct it.
- [1]X API pricing: https://docs.x.com/x-api/getting-started/pricing (checked 28 September 2026)
- [2]X API: create a post: https://docs.x.com/x-api/posts/creation-of-a-post (checked 28 September 2026)
- [3]X API: replies and threads: https://docs.x.com/x-api/posts/manage-tweets/integrate (checked 28 September 2026)
- [4]X OAuth 2.0 authorization code: https://docs.x.com/fundamentals/authentication/oauth-2-0/authorization-code (checked 28 September 2026)
- [5]X API rate limits: https://docs.x.com/x-api/fundamentals/rate-limits (checked 28 September 2026)
- [6]X tools and libraries (XDK, xurl): https://docs.x.com/tools-and-libraries (checked 28 September 2026)
- [7]X MCP server: https://docs.x.com/tools/mcp (checked 28 September 2026)
- [8]X developer changelog: https://docs.x.com/changelog (checked 28 September 2026)
- [9]X API v2 endpoint index: https://docs.x.com/x-api/llms.txt (checked 28 September 2026)

