Luca Martial a651b82e2f feat: query_policy semantic-layer-only restricts agents to predefined semantic-layer measures (#334) ... * feat(sl): add predefined_measures_only guard to semantic query planning SemanticQuery gains a predefined_measures_only flag; the planner rejects any measure resolved with Provenance.COMPOSED (runtime aggregate expressions and query-time derivations) while predefined measures, predefined derived chains, dimensions, filters, and segments pass. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * feat(config): add per-connection query_policy to warehouse connections query_policy: semantic-layer-only | read-only-sql (default) on the warehouse connection schema, plus a policy module with the raw-SQL guard, federated member restriction lookup, and the project-level predicate used to gate sql_execution registration. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * feat(cli): enforce query_policy on raw SQL through one shared executor ktx sql and the MCP sql_execution tool now share executeProjectRawSql (resolve, policy check, read-only validation, execute), collapsing their duplicated validate-then-execute paths. Restricted connections are rejected before validation; federated raw SQL is rejected when any member is restricted. sql_execution is not registered when every SQL connection is restricted, and connection_list marks restricted connections so agents route to sl_query. executeProjectReadOnlySql stays generic for ktx-internal SQL (scan, ingest, SL-generated). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * feat(sl): compile queries with predefined_measures_only from query_policy compileLocalSlQuery injects the flag from the connection's query_policy, never from caller input, covering both ktx sl query and the MCP sl_query tool through the daemon compile path. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * docs: document query_policy semantic-layer-only Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * fix(sl): close semantic-layer-only bypasses via filters and federated hint The predefined_measures_only guard only inspected query.measures, so a composed aggregate written into `filters` slipped through _classify_filters into a HAVING clause untouched — letting a restricted agent evaluate arbitrary aggregates (e.g. threshold-probing `sum(x) BETWEEN a AND b`). Reject filter clauses that compose an aggregate function; a HAVING that compares a predefined measure by name (`orders.revenue > 100`) still works. Also make the federated sl_query error policy-aware: when a member is restricted, raw federated SQL is disabled too, so stop directing the agent to `ktx sql -c _ktx_federated` / sql_execution (a guaranteed failure) and point to per-connection semantic-layer queries instead. --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com> Co-authored-by: Andrey Avtomonov <andreybavt@gmail.com>		2026-07-03 08:54:17 +00:00
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docs	feat: query_policy semantic-layer-only restricts agents to predefined semantic-layer measures (#334)	2026-07-03 08:54:17 +00:00