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 existential-birds/beagle --skill remix-v2-perf-ssr-reviewgit clone --depth 1 https://github.com/existential-birds/beagleWrote 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/existential-birds/beagle/remix-v2-perf-ssr-review)<a href="https://agentmods.dev/skills/existential-birds/beagle/remix-v2-perf-ssr-review"><img src="https://agentmods.dev/badge/skills/existential-birds/beagle/remix-v2-perf-ssr-review/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/existential-birds/beagle/remix-v2-perf-ssr-review"><img src="https://agentmods.dev/badge/skills/existential-birds/beagle/remix-v2-perf-ssr-review.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 | $0.00076 | $0.03042 |
| Opus 5.5 | $0.00030 | $0.01217 |
| Sonnet 5.5 | $0.00015 | $0.00608 |
| Haiku 4.5 | $0.00008 | $0.00304 |
Grade A, and why
remix-v2-perf-ssr-review 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 1mo 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 — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Remix v2 Performance / SSR Code Review
Targets TypeScript route modules importing from @remix-run/*. See remix-v2-perf-ssr for canonical patterns.
Quick Reference
| Issue Type | Reference |
|---|---|
Missing headers export, unsafe public cache, child-drops-parent headers, missing Vary: Cookie, Set-Cookie + public |
references/caching-headers.md |
Server libs imported without .server.ts, process.env.SECRET_* leaks, typeof window substituted for .server.ts |
references/server-client-split.md |
new Date() in render, Math.random() in keys, locale formatting without explicit locale, missing useId(), blanket suppressHydrationWarning |
references/hydration.md |
prefetch="render" on every link, defer for fast data, missing <Suspense> around <Await>, prefetch to side-effect routes |
references/prefetch-streaming.md |
dangerouslySetInnerHTML with untrusted data, missing loading="lazy", missing links preload, stylesheet injected in body |
references/assets.md |
Review Checklist
- Routes serving data export
headers(even if the answer isno-store) - Child routes serving personalized data export their own
headers(otherwise they silently inherit the parent's policy) -
Cache-Control: publicis never set on auth'd or cookie-bearing responses -
Vary: Cookieis set when cache decision depends on session - Server-only libs (
prisma,bcrypt,node:fs,jsonwebtoken) live in*.server.tsorapp/.server/ - Secret env (
process.env.STRIPE_SECRET_KEY, etc.) is read only inside loaders/actions or.servermodules - Client-exposed env is whitelisted into
window.ENV, never rawprocess.env -
typeof window === "undefined"is not used as a substitute for.server.ts(treeshaking is unreliable) - No
new Date(),Math.random(),Date.now(),crypto.randomUUID()in JSX render path - Locale formatting (
toLocaleDateString,Intl.DateTimeFormat) passes an explicit locale - Components generating IDs use
useId(), notMath.random()or counters -
suppressHydrationWarningis scoped to a single element with a code comment explaining why -
<Link prefetch="render">is reserved for above-the-fold critical nav, not lists -
<PrefetchPageLinks>does not target routes whose loaders have side effects (analytics, mutations) - Every
<Await>is wrapped in<Suspense>and has anerrorElement -
defer()is used only for genuinely slow data (>~50ms); fast data is awaited - Below-the-fold images use
loading="lazy"and havewidth/height - Critical fonts/CSS are preloaded via the
linksexport, not injected in body
What ships with it
5 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.
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.
- 1mo ago First seen · 124 lines · 76 tokens per session scan A 7b2e992407e1
remix-v2-perf-ssr-review is a skill published in the GitHub repository existential-birds/beagle (82 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 76 tokens to every session and 3,042 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-09-16.
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