remotion: Skill for Claude Code

.agents/skills/upload-r2/SKILL.md

upload-r2 is a skill for Claude Code, Codex from remotion-dev/remotion. It costs 57 tokens per session (546 once invoked), scanned A, original, no licence file.

A set of instructions for moving large Remotion assets to Cloudflare R2, an object-storage service, and using hosted URLs instead of local files.

In plain words
What is it for?
Use it when Remotion assets are too large for Git or when a change should host media files on remotion.media.
Why use it?
It prevents large media files from being committed to Git and keeps pull requests from containing unnecessary binary assets.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: installed under .agents/ (shared by several agents).

This is remotion-dev/remotion's own configuration. It tells Claude Code and Codex how to work on remotion itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything remotion configures →

Reuse

Borrowing it

Nothing to install: this file belongs to remotion-dev/remotion. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/remotion-dev/remotion/main/.agents/skills/upload-r2/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/remotion-dev/remotion

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for upload-r2

README.md
[![agentmods](https://agentmods.dev/badge/skills/remotion-dev/remotion/upload-r2/github.svg)](https://agentmods.dev/skills/remotion-dev/remotion/upload-r2)
Your own site
<a href="https://agentmods.dev/skills/remotion-dev/remotion/upload-r2"><img src="https://agentmods.dev/badge/skills/remotion-dev/remotion/upload-r2/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.

agentmods 80×15 button for upload-r2

Your own site · 80×15
<a href="https://agentmods.dev/skills/remotion-dev/remotion/upload-r2"><img src="https://agentmods.dev/badge/skills/remotion-dev/remotion/upload-r2.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 546 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • Socket pass 18 Aug 2026
  • Snyk pass 18 Aug 2026
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 2 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Privilege Escalation · line 21
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 27
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
How audits are shown
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00057 $0.00546
Opus 5.5 $0.00023 $0.00218
Sonnet 5.5 $0.00011 $0.00109
Haiku 4.5 $0.00006 $0.00055

Measured 1mo ago against content hash 6d427c469946, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

upload-r2 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 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -I --fail https://remotion.media/<remote-file-name>
.agents/skills/upload-r2/SKILL.md · 43 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Changes

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.

  1. 1mo ago First seen · 43 lines · 57 tokens per session scan A 6d427c469946

Subscribe to this mod's changes

upload-r2 is a skill published in the GitHub repository remotion-dev/remotion (67,130 stars, last pushed yesterday), with no licence file. It adds 57 tokens to every session and 546 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-30.

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