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/mayank-io/mstack/x-postnpx skills add mayank-io/mstack --skill x-postgit clone --depth 1 https://github.com/mayank-io/mstackWhat 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 | $0.00092 | $0.05813 |
| Opus 5 | $0.00046 | $0.02906 |
| Sonnet 5 | $0.00018 | $0.01163 |
| Haiku 4.5 | $0.00009 | $0.00581 |
Grade A, and why
x-post scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
Collect all image URLs from all extracted posts (focal + thread). Download each using curl: How it starts
The opening of the file, as written. The whole thing — 512 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Download X Post
Use the gstack browser to navigate to an X/Twitter post, extract full content (tweets, threads, and X Articles), detect threads automatically, and download images locally.
Browser — always gstack, never headless
Browser work goes through the gstack browser, which holds the user's logged-in sessions. A fresh Playwright instance is logged out: it silently returns login walls or truncated content that looks like a successful capture.
B="$HOME/.claude/skills/gstack/browse/dist/browse"
"$B" connect # run from the target directory — another cwd spawns a second
# daemon and kills the headed session
"$B" goto "<url>"
"$B" js '<expression>'
The daemon must be in headed mode. browse status reports either headed
(attached to the user's real Chrome, carrying their logins) or launched (gstack's
own Chromium on a fresh profile, logged into nothing). A launched daemon returns
a login wall for every gated page, and a login wall reads as a short page rather
than an error — nothing downstream will flag it. Verify the mode, and force a
restart when it is wrong:
"$B" status # must report `mode: headed`
"$B" connect --force-restart # only when it does not — a launched daemon holds a
# fresh profile with no logins, so nothing is lost
The _browse.py adapter runs this check inside connect() and refuses to continue
if it cannot reach headed. Do the same by hand when driving $B directly.
Do NOT disconnect when done. browse disconnect tears down the daemon and
the logged-in sessions with it. Leave it running — the daemon is a shared user
resource, connect is safe to call again, and only whoever started it should
close it. The
adapter's close() is deliberately a no-op, so leaving the async with browse_page() block tears down nothing.
Never launch a headless browser. Not headless=True, not --headless, not a
fresh chromium.launch(). If gstack is unavailable, stop and say so rather than
falling back — a logged-out capture is worse than no capture, because it looks fine.
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.
- 2d ago First seen · 512 lines · 92 tokens per session scan A 44f6f7edc123
x-post is a skill published in the GitHub repository mayank-io/mstack (5 stars, last pushed 8d ago), licensed MIT. It adds 92 tokens to every session and 5,813 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other skills, from other repositories
use-agent-browser-for-airi
Test AIRI display-model imports with agent-browser across stage-tamagotchi Electron, stage-web, and stage-pocket mobile web layouts. Use when uploading and verifying contributor-supplied Live2D ZIP, VRM, or MMD ZIP/PMX/PMD files through AIRI's model selector, including onboarding bypass, format-specific import…
opencli-sitemap-author
Use when creating or maintaining OpenCLI site sitemaps: agent-facing navigation, page-state, action, workflow, API-reference, pitfall, and fallback knowledge for a website. Use after browser exploration discovers durable site context, when a sitemap is stale, or when promoting local site knowledge into the repo.
debug-optimize-lcp
Guides debugging and optimizing Largest Contentful Paint (LCP) using Chrome DevTools MCP tools. Use this skill whenever the user asks about LCP performance, slow page loads, Core Web Vitals optimization, or wants to understand why their page's main content takes too long to appear. Also use when the user mentions…
pinchtab-mcp
Use this skill when a task requires browser automation through PinchTab's MCP server connected to a remote browser instance. Covers navigation, element interaction, data extraction, form filling, multi-step flows, and session management via MCP tools.
traceway-setup
Analyze and instrument repositories for Traceway observability. Use when the user wants to plan, add, migrate, or verify Traceway or OpenTelemetry monitoring for backend, browser, full-stack, mobile or iOS, or AI-agent software, including project topology and user-approved setup-plan creation. Backends use OTLP/HTTP…
southwest
Search Southwest Airlines fares and points pricing via Patchright browser automation. SW is not in any GDS or API. Covers all fare classes, Companion Pass value, and fare drop monitoring.