Source: https://www.agentweb.us/sites/x.com/

# Can an AI agent post and reply on X?

By Andrey Marey, Founder of AgentWeb · As of Oct 22, 2026

> **Short answer.** Yes, through AgentWeb. As of Oct 22, 2026, the X map (version 0.1.0) gives your agent 13 actions on the user's own X account: 7 that act (post, reply, delete, like, unlike, repost, undo repost) and 6 that read first (the home timeline, a post, its replies, an account, its posts). One honest caveat from the map itself: X often refuses `create_post` from an API client with an authorization error (code 226), even while replies from the same session go through. When that happens, your agent gets the error back instead of a silent failure.

Map: X (x.com) · version 0.1.0 · 13 actions · Uses the person's own signed-in account

## What your agent can do on X

| Action | What it does |
|---|---|
| `create_post` | Publishes a new standalone post. X often refuses this from API clients (error code 226). Replies usually still work. |
| `reply_post` | Replies to a post. Public and immediate. |
| `delete_post` | Permanently deletes one of the account's own posts or replies. Irreversible. |
| `add_like` | Likes a post. Public, and it notifies the author. |
| `remove_like` | Removes a like. |
| `create_repost` | Reposts someone's post to the account's followers. |
| `remove_repost` | Undoes a repost. |

## What your agent can read first

| Action | What it returns |
|---|---|
| `list_home_timeline` | Read the signed-in account's home feed, newest first, the chronological 'Following' timeline, not the ranked 'For you' one. |
| `get_post` | Read one post by id, its full text, author, timestamp and engagement counts. |
| `list_post_replies` | Read the replies under one post, the conversation thread, ranked by X's relevance. |
| `get_user` | Look up one account by its @handle. |
| `list_my_posts` | Read the signed-in account's own posts, newest first, with their current like/reply/repost/view counts. |
| `list_user_posts` | Read another account's posts, newest first, with engagement counts, use it to watch a competitor, a customer or a journalist. |

## How the login works

The person signs in once on X through AgentWeb's hosted login, started with `agentweb_start_connection` and confirmed with `agentweb_poll_connection`. Your agent never sees the password. Actions then run on that person's own account, and they can disconnect at any time.

## Try it

```bash
curl -s https://mcp.agentweb.us/api/execute \
  -H "Authorization: Bearer $AGENTWEB_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: x-user-1" \
  -d '{"domain":"x.com","action":"get_user","params":{"handle":"<handle>"}}'
```

Parameter names shown are illustrative. Your agent gets the exact schema for every action from AgentWeb's `list_actions` tool.

## What it does not cover yet

- Posting images or video is not mapped.
- Direct messages on X are not mapped.

## Frequently asked questions

### Why might `create_post` fail?

X often refuses new standalone posts from API clients with an authorization error (code 226, or 344 phrased as a daily limit), even while replies from the same session succeed. The map documents this, and your agent gets the error back so it can tell the user and offer a reply instead.

### Should my agent read the thread before replying?

Yes. `list_post_replies` returns the conversation under a post, so the agent doesn't repeat what others already said.

### What does it cost?

Each completed action costs $0.05, paid from prepaid blocks of $25, $50 or $100 that never expire. Failed actions are refunded.

### Which AI tools can use it?

Any agent that speaks MCP or HTTP. Add `https://mcp.agentweb.us/mcp` as a remote MCP server in Claude, ChatGPT, Cursor, Codex or Grok, or call the REST endpoint directly.

## Related

- [How to let an AI agent post, reply and like on X](/guides/ai-agent-post-on-x/)
- [Like, repost and follow on Threads](/sites/threads.com/)
- [Post on LinkedIn with an AI agent](/sites/linkedin.com/create-post/)
- [All sites AgentWeb can act on](/sites/)

Action list from AgentWeb's public sites API, snapshot Oct 22, 2026, 16:59 London time. Live coverage: https://mcp.agentweb.us/api/sites