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-forms-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-forms-review)<a href="https://agentmods.dev/skills/existential-birds/beagle/remix-v2-forms-review"><img src="https://agentmods.dev/badge/skills/existential-birds/beagle/remix-v2-forms-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-forms-review"><img src="https://agentmods.dev/badge/skills/existential-birds/beagle/remix-v2-forms-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 | $0.00061 | $0.02168 |
| Opus 5.5 | $0.00024 | $0.00867 |
| Sonnet 5.5 | $0.00012 | $0.00434 |
| Haiku 4.5 | $0.00006 | $0.00217 |
Grade A, and why
remix-v2-forms-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 — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Remix v2 Forms Code Review
See remix-v2-forms for canonical patterns. This skill flags violations; the sibling skill teaches the patterns.
Quick Reference
| Issue Type | Reference |
|---|---|
Manual fetch(), native <form>, wrong <Form> vs useFetcher choice |
references/form-vs-fetcher.md |
useState loading flags, useNavigation for per-row, missing pending state |
references/pending-state.md |
Unbounded memory uploads, missing encType, unvalidated FormData, mirrored optimistic state |
references/uploads-validation.md |
| Route sprawl instead of intent pattern, PUT/DELETE without PE fallback | references/multi-action-routes.md |
Review Checklist
- In-app mutations use
<Form>or<fetcher.Form>, neverfetch()/axios -
<Form>is imported from@remix-run/react(not native<form>) for POST mutations -
useFetcherused when URL should NOT change (row toggle, inline edit) -
<Form>+redirect(...)used when URL SHOULD change (create, delete-then-list) - Pending state derived from
useNavigation()orfetcher.state, neveruseState - Per-row pending uses per-row
fetcher.state(not page-globaluseNavigation) -
useNavigation()calls checknavigation.formActionto scope to expected path - Optimistic UI reads
fetcher.formData/navigation.formDatadirectly (not mirrored) - Actions returning success
redirect(...), returningjson()only for errors / same-page -
<Form encType="multipart/form-data">on every file-upload form -
unstable_createMemoryUploadHandleralways hasmaxPartSize; large files use disk/stream handler -
FormDatavalues are validated/coerced before reaching the DB (noform.get(x) as string) - Multiple mutations on one route use intent pattern, not separate routes
-
method="put|patch|delete"is documented as JS-only, or rewritten as POST + intent -
nav.formMethod/fetcher.formMethodcompared against UPPERCASE strings ("POST","GET"); v2'sv2_normalizeFormMethoddefault returns UPPERCASE —=== "post"silently never matches.
What ships with it
4 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 · 119 lines · 61 tokens per session scan A 35f3eff3686d
remix-v2-forms-review is a skill published in the GitHub repository existential-birds/beagle (82 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 61 tokens to every session and 2,168 once invoked, about $0.0002 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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