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 gear-foundation/vara-skills --skill sails-dev-envgit clone --depth 1 https://github.com/gear-foundation/vara-skillsWrote 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/gear-foundation/vara-skills/sails-dev-env)<a href="https://agentmods.dev/skills/gear-foundation/vara-skills/sails-dev-env"><img src="https://agentmods.dev/badge/skills/gear-foundation/vara-skills/sails-dev-env/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/gear-foundation/vara-skills/sails-dev-env"><img src="https://agentmods.dev/badge/skills/gear-foundation/vara-skills/sails-dev-env.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 | $0.00066 | $0.01245 |
| Opus 5 | $0.00033 | $0.00622 |
| Sonnet 5 | $0.00013 | $0.00249 |
| Haiku 4.5 | $0.00007 | $0.00125 |
Grade C, and why
sails-dev-env 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 9d 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.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
command -v rustup >/dev/null 2>&1 || curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
command -v rustup >/dev/null 2>&1 || curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y How it starts
The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Sails Dev Env
Goal
Get the machine to a verified baseline for standard Sails Rust work: rustup, Rust toolchains, Wasm targets, cargo-sails, and the latest official gear binary.
Sequence
- Detect whether the builder is on
macOS,Linux, orWindows. - If
rustupis missing, install it with the official bootstrap for that platform. - Install or update the
stableandnightlytoolchains, then addwasm32-unknown-unknownandwasm32v1-none. - Install the Sails Rust CLI with
cargo install sails-cli --locked, which providescargo-sailsand the standard greenfield bootstrap commandcargo sails new <project-name>. - Install the latest official
gearrelease binary fromhttps://get.gear.rs/(see Commands below for platform-specific download). - Verify the toolchain with
rustup show,cargo sails --version, andgear --version. - Route back into
../sails-new-app/SKILL.md,../ship-sails-app/SKILL.md,../sails-gtest/SKILL.md, or../sails-local-smoke/SKILL.mddepending on the builder's next task.
Commands
macOS or Linux
command -v rustup >/dev/null 2>&1 || curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
# After fresh install, restart the shell or source the env so cargo/rustc resolve:
. "${HOME}/.cargo/env"
rustup toolchain install stable
rustup toolchain install nightly
rustup default stable
rustup target add wasm32-unknown-unknown --toolchain stable
rustup target add wasm32-unknown-unknown --toolchain nightly
rustup target add wasm32v1-none --toolchain stable
rustup target add wasm32v1-none --toolchain nightly
cargo install sails-cli --locked
# Install gear binary from official releases (auto-detect architecture)
GEAR_VERSION="v1.10.0"
case "$(uname -s)-$(uname -m)" in
Darwin-arm64) GEAR_ARCH="aarch64-apple-darwin" ;;
Darwin-x86_64) GEAR_ARCH="x86_64-apple-darwin" ;;
Linux-x86_64) GEAR_ARCH="x86_64-unknown-linux-gnu" ;;
Linux-aarch64) GEAR_ARCH="aarch64-unknown-linux-gnu" ;;
*) echo "Unsupported platform: $(uname -s)-$(uname -m)"; exit 1 ;;
esac
mkdir -p "${HOME}/.local/bin"
curl -sSf "https://get.gear.rs/gear-${GEAR_VERSION}-${GEAR_ARCH}.tar.xz" | tar -xJ -C "${HOME}/.local/bin"
export PATH="${HOME}/.local/bin:${PATH}"
rustup show
cargo sails --version
cargo sails --help
gear --version
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.
- 9d ago First seen · 98 lines · 66 tokens per session scan C 6aa000f6c140
sails-dev-env is a skill published in the GitHub repository gear-foundation/vara-skills (17 stars, last pushed 1mo ago), licensed MIT. It adds 66 tokens to every session and 1,245 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, 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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