Veto — SQL Safety & Cost Oracle
What this MCP does
Analyzes PostgreSQL SQL and migrations for safety, correctness, locking risk, cost, and configurable organizational policies.
Tools
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['sql'], 'properties': {'sql': {'type': 'string', 'description': 'The SQL to analyze (one or more statements).'}, 'schema': {'type': 'string', 'description': 'Optional CREATE TABLE/INDEX DDL. Providing it enables EXPLAIN-based cost analysis (seq scans on large tables, etc.) on a throwaway scratch Postgres; omit it for static safety analysis only.'}, 'dialect': {'type': 'string', 'const': 'postgres'}, 'rowCountHints': {'type': 'object', 'description': 'Optional map of table name to estimated row count for realistic cost estimates.', 'additionalProperties': {'type': 'number'}}}, 'additionalProperties': False}
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {}}
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['policies'], 'properties': {'policies': {'type': 'array', 'items': {'type': 'object', 'required': ['table', 'operations', 'action'], 'properties': {'table': {'type': 'string', 'description': 'Exact table name or glob, e.g. "payments", "audit_*", "*".'}, 'action': {'enum': ['block', 'warn'], 'type': 'string'}, 'message': {'type': 'string', 'description': 'Optional human message shown in the finding.'}, 'operations': {'type': 'array', 'items': {'enum': ['select', 'insert', 'update', 'delete', 'truncate', 'drop', 'alter'], 'type': 'string'}, 'description': 'Operations this rule applies to.'}}, 'additionalProperties': False}, 'description': 'The full policy set (replaces any previously stored set; max 50).'}}, 'additionalProperties': False}
Recent tool changes
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