feat(mcp): advertise discovery tool per connection in list_connections - #135
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Each sqlkit connection now carries a 'discover' field pointing at sqlkit__list_tables as the first step to explore its objects, so agents know how to start querying any connection. Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
Expose 9 previously-implemented adapter methods as MCP tools: list_indexes, list_foreign_keys, list_views, list_procedures, list_functions, list_triggers, get_object_ddl, get_table_info, get_foreign_keys. Each handler covers all ActiveConnection variants. Adds 14 unit tests (missing config + required-arg validation). Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
… test list_indexes, list_foreign_keys, list_triggers, get_object_ddl: database marked required in schema but treated as optional in handler — now optional, consistent with list_tables. discover_tool_for: simplified no-op match to direct return. Added test for missing object_type validation in get_object_ddl. Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
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Summary
Improves sqlkit MCP capability completeness and discoverability.
Changes
Discoverability
list_connectionsnow includes adiscoverfield per connection, pointing atsqlkit__list_tablesas the first step to explore a connection's objects before querying.New tools (9)
Registers previously-implemented adapter methods as MCP tools, each covering all
ActiveConnectionvariants (Postgres, MySQL, SQLite, SQLServer, ClickHouse, JDBC, HttpSQL, Rqlite, Turso):sqlkit__list_indexessqlkit__list_foreign_keyssqlkit__list_viewssqlkit__list_proceduressqlkit__list_functionssqlkit__list_triggerssqlkit__get_object_ddlsqlkit__get_table_infosqlkit__get_foreign_keysMCP tool count grows from 11 → 20.
Testing
cargo test --libpasses: 347/347 (was 333)cargo checkpasses