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 agentmods add skills/steipete/agent-scripts/xurlnpx skills add steipete/agent-scripts --skill xurlgit clone --depth 1 https://github.com/steipete/agent-scriptsWhat 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 | $0.00021 | $0.00969 |
| Opus 5 | $0.00010 | $0.00485 |
| Sonnet 5 | $0.00004 | $0.00194 |
| Haiku 4.5 | $0.00002 | $0.00097 |
Grade C, and why
xurl scanned grade C with 2 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 yesterday.
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.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
curl -fsSL https://raw.githubusercontent.com/xdevplatform/xurl/main/install.sh | bash Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -fsSL https://raw.githubusercontent.com/xdevplatform/xurl/main/install.sh | bash How it starts
The opening of the file, as written. The whole thing — 199 lines — stays where its author put it; the contents beside it link to each section on GitHub.
xurl
Official CLI for the X API.
Primary upstream: https://github.com/xdevplatform/xurl
Install
Homebrew:
brew install --cask xdevplatform/tap/xurl
npm:
npm install -g @xdevplatform/xurl
Shell script:
curl -fsSL https://raw.githubusercontent.com/xdevplatform/xurl/main/install.sh | bash
Go:
go install github.com/xdevplatform/xurl@latest
Safety
- Never read, print, summarize, upload, or paste
~/.xurlinto LLM context. - Never ask the user to paste client secrets, bearer tokens, or OAuth tokens into chat.
- Never use
--verbosein agent runs; it can expose auth headers. - Do not run auth commands with inline secret flags in an agent session.
- The user must register app credentials manually on their machine outside the agent session.
Auth
Check current state:
xurl auth status
If an app is already registered, complete OAuth 2.0:
xurl auth oauth2
Multi-app:
xurl auth apps list
xurl auth default my-app
xurl auth default my-app alice
xurl --app dev-app /2/users/me
Notes:
xurlstores app config and tokens in~/.xurl.- OAuth 2.0 redirect URI in the X developer portal should be
http://localhost:8080/callback. - App registration examples with inline secrets are intentionally omitted here. Do that outside the agent session.
Common shortcuts
xurl post "Hello world!"
xurl reply 1234567890 "Nice post"
xurl quote 1234567890 "My take"
xurl delete 1234567890
xurl read 1234567890
xurl search "from:elonmusk" -n 10
xurl whoami
xurl user @XDevelopers
xurl timeline -n 20
xurl mentions -n 10
xurl like 1234567890
xurl unlike 1234567890
xurl repost 1234567890
xurl unrepost 1234567890
xurl bookmark 1234567890
xurl unbookmark 1234567890
xurl bookmarks -n 10
xurl likes -n 10
xurl follow @handle
xurl unfollow @handle
xurl following -n 20
xurl followers -n 20
xurl dm @handle "message"
xurl dms -n 10
xurl media upload path/to/file.mp4
xurl media status MEDIA_ID
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.
- yesterday First seen · 199 lines · 21 tokens per session scan C e2259c5199f0
xurl is a skill published in the GitHub repository steipete/agent-scripts (6,580 stars, last pushed 2d ago), licensed MIT. It adds 21 tokens to every session and 969 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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