Hmrc Fraud Prevention Header Lint runs on your own machine — the client starts it, so there is no endpoint to ping.
Finds the Gov-Client and Gov-Vendor header mistakes HMRC rejects, in your editor, offline, before yo
Today is the operative word: we check Hmrc Fraud Prevention Header Lint every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add hmrc-fraud-prevention-header-lint -- npx -y @readystack/hmrc-fraud-prevention-header-lint
{
"mcpServers": {
"hmrc-fraud-prevention-header-lint": {
"args": [
"-y",
"@readystack/hmrc-fraud-prevention-header-lint"
],
"command": "npx"
}
}
}
[mcp_servers.hmrc-fraud-prevention-header-lint]
command = "npx"
args = ["-y", "@readystack/hmrc-fraud-prevention-header-lint"]
{
"mcpServers": {
"hmrc-fraud-prevention-header-lint": {
"args": [
"-y",
"@readystack/hmrc-fraud-prevention-header-lint"
],
"command": "npx"
}
}
}
{
"mcpServers": {
"hmrc-fraud-prevention-header-lint": {
"args": [
"-y",
"@readystack/hmrc-fraud-prevention-header-lint"
],
"command": "npx"
}
}
}
Finds the lines KSeF will reject in a Polish structured invoice XML, before you send it
Reads security headers and CSP line by line in your config file and names the lines that silently do
Records your Claude Code, Codex and Pi history before deletion. Cited-or-abstain recall.
Twenty-two checks over the ICT vendor contracts in your repository - every missing Article 30 clause
Find the lines your bank will refuse before you send the batch
Seventeen rules on your .tex file: the statements the editorial office looks for, and the source tha
Finds the LLM model IDs pinned in your code that vendors have already switched off, or have dated to
Finds retired API versions and removed sfdx force:* commands in your DX repo before a deploy or a CI
Answers built from our own checks of this server.