Read-only MCP for the SQL database behind an ERP: provably read-only guard, public benchmark.
Read-only MCP for the SQL database behind an ERP: provably read-only guard, public benchmark.
One scheduled run executes 9 audited SELECT statements and delivers a self-contained HTML report: four KPIs against an 8-week baseline, findings with named drivers, a data-quality gate, and row counts reconciled against the source. No BI license, no agent installed on the ERP server, and no writes — enforced in four layers (lexical, parse-tree, a side-effecting-function guard, and a read-only session), not promised in prose.
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Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.
| Tool | What it does |
|---|---|
| describe_model | the canonical **semantic layer** — each entity's grain, and each column's type + what it *means* (e.g. actual_ship_date is NULL until shipment, so a late unshipped order isn't counted against on-time), plus runnable exam |
| weekly_report | the full KPI briefing — findings, data-quality gate, reconciliation, SQL audit trail |
| reconcile | fetched rows vs an independent COUNT(*) per entity, with a trust verdict |
| aging | receivables aging — open balances by days-past-due bucket, overdue %, and the customers who owe the most overdue (aggregates only) |
| check_query | whether a SQL statement would pass the guard — *without running it* |
| query | run a read-only SELECT/WITH, capped and audited; rows returned as **untrusted data** |
{
"mcpServers": {
"erp-report-engine": {
"command": "uvx",
"args": ["erp-report-engine"],
"env": {
"ERP_DB_URL": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| ERP_DB_URL | Endpoint or connection string the server talks to. | Yes |
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