Local prompt regression tracker with six fictional cases and evidence for human review.
Connect Runs on your machine
claude mcp add guardrails-mcp -e GUARDRAILS_DATA_DIR=<GUARDRAILS_DATA_DIR> -- uvx guardrails-mcp==0.1.1
{
"mcpServers": {
"guardrails-mcp": {
"command": "uvx",
"args": [
"guardrails-mcp==0.1.1"
],
"env": {
"GUARDRAILS_DATA_DIR": "<GUARDRAILS_DATA_DIR>"
}
}
}
}
{
"mcpServers": {
"guardrails-mcp": {
"command": "uvx",
"args": [
"guardrails-mcp==0.1.1"
],
"env": {
"GUARDRAILS_DATA_DIR": "<GUARDRAILS_DATA_DIR>"
}
}
}
}
{
"servers": {
"guardrails-mcp": {
"type": "stdio",
"command": "uvx",
"args": [
"guardrails-mcp==0.1.1"
],
"env": {
"GUARDRAILS_DATA_DIR": "<GUARDRAILS_DATA_DIR>"
}
}
}
}
Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
GUARDRAILS_DATA_DIRRequired | Absolute writable directory for local evaluation records. Use the same path in CLI and dashboard. |
Details
| Package | [email protected] (PYPI, stdio) |
| First published | 16 Oct 2026 |
| Last updated | 16 Oct 2026 |
| Registry name | io.github.TAM-DS/guardrails-mcp |
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