Vastlint

Name: Vastlint
Author: aleksUIX

by aleksUIXcommunityv0.4.17

Validates VAST XML ad tags against IAB Tech Lab VAST specifications, XML well-formedness, URI/MIME/currency/ad-id rules, and SIMID-related interactive creative rules. It also provides an MCP server with tools for validating, inspecting, listing rules, explaining rules, and auto-fixing VAST tags.

From the registry: VAST XML validator — checks IAB VAST 2.0–4.3 ad tags for spec compliance. 121 rules.

GitHub Repository

Install & configure

Install in your client

Paste into the AI you're chatting with — it will figure out the rest

Please install the `vastlint` MCP server into my current AI client (that's you).

Canonical MCP server config (HTTP transport):
- url: `https://vastlint.org/mcp`

Note: README provides two MCP options: hosted endpoint at https://vastlint.org/mcp (no install, preferred simplest path) and a local stdio server via `cargo install vastlint-mcp` with command `vastlint-mcp`. No environment variables or headers are documented for the hosted endpoint.

Add this MCP server to my current client's config in the correct format for you. If you need secrets or credentials I haven't provided, ASK me — do not invent values or leave raw placeholders. After adding it, tell me how to verify the server is connected.

Note: README provides two MCP options: hosted endpoint at https://vastlint.org/mcp (no install, preferred simplest path) and a local stdio server via `cargo install vastlint-mcp` with command `vastlint-mcp`. No environment variables or headers are documented for the hosted endpoint.