VASTlint is answering right now. Last checked 4 min ago. It exposes 15 tools. Last commit 17 Sep 2026.
Validate VAST, VMAP, and DAAST ad tags against IAB specs. 232 rules, pure Rust core.
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 27 August 2026. No other catalogue keeps this.
We read the source, 22 h ago · tools taken from the live server · rules 3dff92dd89df
What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.
const proc = spawn(path, ['--version'], { stdio: 'ignore' });
Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.
import select
deadline = time.monotonic() + timeout
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 4 min ago.
claude mcp add vastlint --transport http https://vastlint.org/mcp
{
"mcpServers": {
"vastlint": {
"url": "https://vastlint.org/mcp"
}
}
}
[mcp_servers.vastlint]
url = "https://vastlint.org/mcp"
{
"mcpServers": {
"vastlint": {
"url": "https://vastlint.org/mcp"
}
}
}
{
"mcpServers": {
"vastlint": {
"url": "https://vastlint.org/mcp"
}
}
}
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
create_content_standards
delete_content_standards
get_content_standards
list_content_standards
update_content_standards
validate_content_delivery
validate_vast
validate_vast_url
get_adcp_capabilities
calibrate_content
list_creatives
explain_rule
fix_vast
inspect_vast
list_rules
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://vastlint.org/mcp | sse | answering | 338 ms | 4 min ago |
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Answers built from our own checks of this server.