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 xhostd/xhost-sdk --skill xhostgit clone --depth 1 https://github.com/xhostd/xhost-sdkWrote 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/xhostd/xhost-sdk/xhost)<a href="https://agentmods.dev/skills/xhostd/xhost-sdk/xhost"><img src="https://agentmods.dev/badge/skills/xhostd/xhost-sdk/xhost/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/xhostd/xhost-sdk/xhost"><img src="https://agentmods.dev/badge/skills/xhostd/xhost-sdk/xhost.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 | $0.00091 | $0.13581 |
| Opus 5.5 | $0.00036 | $0.05432 |
| Sonnet 5.5 | $0.00018 | $0.02716 |
| Haiku 4.5 | $0.00009 | $0.01358 |
Grade C, and why
xhost scanned grade C with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 16d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
rm -rf "$WORK" Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -sS https://api.xhostd.com/registrations -H 'Content-Type: application/json' \ How it starts
The opening of the file, as written. The whole thing — 381 lines — stays where its author put it; the contents beside it link to each section on GitHub.
xhostd — Agent-First Hosting
xhostd is hosting designed for agents. You create an app, push its code to the git repo the app owns, and deploy it. Every app gets a production HTTPS URL; named channels give preview URLs. The same remote MCP tools are available on Claude Code, claude.ai, Codex, and other OAuth-capable clients. The procedure below is identical across clients — except that a runtime with no shell has no git, and there the commit_files fallback stands in for the push. Tool names are client-specific: examples below use mcp__xhost__<name> as a Claude-style spelling; use the actual names exposed by your runtime.
Authentication
There are two ways to hold an authenticated session. Pick the one that matches who is present.
A. A person is present: OAuth. The plugin (Claude Code) and the connector (claude.ai) authenticate through Google sign-in. Call the tools. If a tool reports unauthenticated:
- Claude Code: tell the user to run
/mcp, select xhost, and choose Authenticate. A browser opens, they sign in with Google (and pick a username on first sign-in), and approve. - Codex: refresh or reconnect the xhost plugin, then retry the first tool call. The browser-based Google sign-in opens on its own.
- claude.ai: tell the user to reconnect the xhost connector in Settings → Connectors.
Never ask a person for an API token on this path. The OAuth session carries one.
B. No person is present: register with an SSH key. When nobody can sign in through a browser, you open the account yourself. The private key at ~/.ssh/xhost_ed25519 is the durable credential; the 30-day xh_ token it mints is renewable without a person. The account starts on the starter plan: one channel, 128 MiB of memory, 128 MiB of object storage, no raw TCP. Full guide, with every command and every error: references/guide-register-as-agent.md (https://docs.xhostd.com/guides/register-as-agent). Run every command in B1–B7 in a subprocess, so no secret enters a tool call or the transcript.
What ships with it
23 files 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.
- references/api-reference.md 67 KB
- references/getting-started.md 13 KB
- references/guide-access-and-security.md 2.3 KB
- references/guide-bkm.md 24 KB
- references/guide-client-blocked-deploy.md 5.2 KB
- references/guide-data-and-recovery.md 2.3 KB
- references/guide-deployments.md 2.4 KB
- references/guide-diagnose-slowness.md 8.5 KB
- references/guide-git.md 11 KB
- references/guide-index.md 5.7 KB
- references/guide-projects-and-channels.md 2.4 KB
- references/guide-recipes-app-node.md 14 KB
- references/guide-recipes-app-python.md 13 KB
- references/guide-recipes-blob.md 32 KB
- references/guide-recipes-commit-files.md 17 KB
- references/guide-recipes-docker.md 24 KB
- references/guide-recipes-oauth.md 25 KB
- references/guide-recipes-port-forwarding.md 33 KB
- references/guide-recipes-postgres.md 24 KB
- references/guide-recipes-static.md 11 KB
- references/guide-recipes-worker.md 25 KB
- references/guide-register-as-agent.md 16 KB
- references/guide-troubleshooting.md 2.0 KB
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.
- 16d ago Changed f897bb454461
- 1mo ago Changed 474b8034837d
- 1mo ago Changed · +74 lines scan A → C c0224d901f0a
- 1mo ago Changed · +1 lines 57bdd7c2449a
- 1mo ago Changed 5a615d1a87f4
- 1mo ago Changed 00f72a5950bb
- 1mo ago First seen · 306 lines · 91 tokens per session scan A 3ab3ea1bfd4f
xhost is a skill published in the GitHub repository xhostd/xhost-sdk (0 stars, last pushed 17d ago), licensed MIT. It adds 91 tokens to every session and 13,581 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it C with 2 findings (recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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