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.
git clone --depth 1 https://github.com/aleksUIX/vastlintWrote 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/plugins/aleksuix/vastlint/gemini-extension)<a href="https://agentmods.dev/plugins/aleksuix/vastlint/gemini-extension"><img src="https://agentmods.dev/badge/plugins/aleksuix/vastlint/gemini-extension/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/plugins/aleksuix/vastlint/gemini-extension"><img src="https://agentmods.dev/badge/plugins/aleksuix/vastlint/gemini-extension.svg" alt="Reviewed on agentmods" width="80" height="20"></a>Grade A, and why
vastlint 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.
What it actually says
{
"name": "vastlint",
"version": "0.13.9",
"mcpServers": {
"vastlint": {
"description": "Validate VAST, VMAP, and DAAST ad tags against IAB Tech Lab specs. Public tools, auth none.",
"httpUrl": "https://vastlint.org/mcp"
}
}
}
What ships with it
30 files beside gemini-extension.json 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.
- examples/vastlint-client-browser/index.html 563 B
- examples/vastlint-client-browser/main.js 8.9 KB runs code
- examples/vastlint-client-browser/package-lock.json 35 KB
- examples/vastlint-client-browser/package.json 382 B
- examples/vastlint-client-browser/style.css 5.0 KB
- examples/vastlint-client-browser/vite.config.js 398 B runs code
- examples/vastlint-client-react-scratch/index.html 570 B
- examples/vastlint-client-react-scratch/package-lock.json 60 KB
- examples/vastlint-client-react-scratch/package.json 533 B
- examples/vastlint-client-react-scratch/README.md 553 B
- examples/vastlint-client-react-scratch/src/App.jsx 20 KB
- examples/vastlint-client-react-scratch/src/main.jsx 241 B
- examples/vastlint-client-react-scratch/src/styles.css 5.1 KB
- examples/vastlint-client-react-scratch/vite.config.js 467 B runs code
- examples/vastlint-react-demo/index.html 560 B
- examples/vastlint-react-demo/package-lock.json 60 KB
- examples/vastlint-react-demo/package.json 523 B
- examples/vastlint-react-demo/src/App.jsx 9.5 KB
- examples/vastlint-react-demo/src/main.jsx 241 B
- examples/vastlint-react-demo/src/styles.css 4.3 KB
- examples/vastlint-react-demo/vite.config.js 467 B runs code
- schemas/openadtech/vastlint/v1/validation_event.avsc 4.0 KB
- scripts/ecosystem-smoke/install-vastlint-client.sh 772 B runs code
- scripts/ecosystem-smoke/install-vastlint-react.sh 769 B runs code
- scripts/ecosystem-smoke/vastlint-client-smoke/package-lock.json 996 B
- scripts/ecosystem-smoke/vastlint-client-smoke/package.json 134 B
- scripts/ecosystem-smoke/vastlint-react-smoke/package-lock.json 20 KB
- scripts/ecosystem-smoke/vastlint-react-smoke/package.json 205 B
- scripts/prepare-js-release-packages.mjs 3.1 KB runs code
- scripts/smoke-test-new-flags.sh 9.5 KB runs code
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 Changed d2ce9bce691f
- 1mo ago First seen · 11 lines scan A 86f1653d90d5
vastlint is a plugin published in the GitHub repository aleksUIX/vastlint (19 stars, last pushed 2d ago), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-09-06.
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