Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add checkra1neth/xbird-skill --skill xbirdgit clone --depth 1 https://github.com/checkra1neth/xbird-skillWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/checkra1neth/xbird-skill/xbird)<a href="https://agentmods.dev/skills/checkra1neth/xbird-skill/xbird"><img src="https://agentmods.dev/badge/skills/checkra1neth/xbird-skill/xbird/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/checkra1neth/xbird-skill/xbird"><img src="https://agentmods.dev/badge/skills/checkra1neth/xbird-skill/xbird.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00078 | $0.00735 |
| Opus 5 | $0.00039 | $0.00367 |
| Sonnet 5 | $0.00016 | $0.00147 |
| Haiku 4.5 | $0.00008 | $0.00073 |
Grade A, and why
xbird scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.
xbird — Twitter/X for AI Agents
247 MCP tools for Twitter/X with x402 micropayments. Pure Node.js — no Bun required.
Zero config — auto-detects your browser session and generates a wallet. No API keys, no developer account.
When to Use
- Running inside Claude Code, Cursor, or Windsurf
- Need direct MCP tool access to Twitter/X
- Works with Node.js >= 18 — no Bun required
Don't use when: Building backend services or autonomous agents (use REST x402 instead), or operating on Virtuals marketplace (use ACP instead).
Setup
Two runtime options:
Bun (recommended) — zero config
claude mcp add xbird -- bunx @checkra1n/xbird
Auto-detects cookies from Chrome, Firefox, Edge, Safari. Just log in to x.com — done.
Node.js — one-time login
claude mcp add xbird -- npx @checkra1n/xbird
npx @checkra1n/xbird login # paste auth_token + ct0 from x.com DevTools
A payment wallet is generated automatically on first run.
Full tool list: see tools.md.
Common Workflows
Post tweet with image: upload_media (get mediaId) → post_tweet with mediaIds: ["<id>"]
Get someone's tweets: get_user (get numeric userId) → get_user_tweets with userId
Search and engage: search_tweets with query → like_tweet or retweet results
Update profile: update_profile_image + update_profile with new bio
Quick Reference
Handles: work with or without @ prefix
Pagination: most tools accept cursor; list/search use count (default 20, max 100)
Media: always upload first, then attach mediaId to tweet
Billing: resource × count — post_read $0.0025 | user_read $0.005 | owned_read $0.001
post_create $0.0075 | interaction_create $0.0075 | content_create $0.005
Common Mistakes
| Mistake | Fix |
|---|---|
| Using handle for bulk tools | get_user_tweets, get_followers, etc. need numeric userId. Call get_user first. |
| Posting thread with 1 tweet | post_thread requires minimum 2 tweets. Use post_tweet for single tweet. |
| Media not attached | Upload returns mediaId — must pass it in mediaIds array to post_tweet. |
| Rate limit error | Twitter rate limit. Wait 1-2 minutes, retry. |
| Cookies not detected | Run npx @checkra1n/xbird login and paste cookies manually. Auto-detect only works with Bun, not npx. |
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 70 lines · 78 tokens per session scan A e984b28c439e
xbird is a skill published in the GitHub repository checkra1neth/xbird-skill (15 stars, last pushed 2mo ago), licensed MIT. It adds 78 tokens to every session and 735 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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