# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## [1.2.0] - 2025-12-13
### Added
- **ArangoDB adapter** (13 tools) - Multi-model database with document, graph, and key-value support
- `arango_query` - Execute AQL queries
- `arango_list_databases`, `arango_list_collections`, `arango_collection_info`
- `arango_insert`, `arango_get`, `arango_update`, `arango_delete`
- `arango_create_collection`, `arango_create_index`
- `arango_traverse`, `arango_list_graphs`, `arango_explain`
- **Virtuoso adapter** (14 tools) - RDF triplestore with SPARQL support
- `virtuoso_select`, `virtuoso_ask`, `virtuoso_construct`, `virtuoso_describe`
- `virtuoso_insert`, `virtuoso_delete`, `virtuoso_update`
- `virtuoso_list_graphs`, `virtuoso_graph_stats`
- `virtuoso_find_by_type`, `virtuoso_text_search`, `virtuoso_list_prefixes`
- `virtuoso_load_rdf`, `virtuoso_clear_graph`
- **CouchDB adapter** (13 tools) - Document database with HTTP REST API
- `couchdb_list_databases`, `couchdb_create_database`, `couchdb_delete_database`
- `couchdb_info`, `couchdb_all_docs`
- `couchdb_get`, `couchdb_insert`, `couchdb_delete`
- `couchdb_find`, `couchdb_create_index`, `couchdb_view`
- `couchdb_bulk_docs`, `couchdb_changes`
- **Cassandra adapter** (12 tools) - Distributed wide-column store
- `cassandra_query` - Execute CQL queries
- `cassandra_list_keyspaces`, `cassandra_list_tables`, `cassandra_describe_table`
- `cassandra_insert`, `cassandra_update`, `cassandra_delete`
- `cassandra_create_keyspace`, `cassandra_create_table`, `cassandra_drop_table`
- `cassandra_batch`, `cassandra_cluster_info`
### Changed
- Total supported databases increased from 16 to 20
### Merged
- Standalone `arango-mcp` repository merged into this project
- Standalone `virtuoso-mcp` repository merged into this project
## [1.1.0] - 2025-12-12
### Added
- Error feedback URLs in tool responses
- AI.scm file for AI assistant instructions
- Directory syndication support
### Changed
- Improved error messages with actionable feedback
## [1.0.0] - 2025-12-10
### Added
- Initial release with 16 database adapters
- PostgreSQL, MongoDB, Neo4j, Elasticsearch adapters
- Redis/Dragonfly, Memcached, LMDB cache adapters
- SQLite, DuckDB, MariaDB relational adapters
- SurrealDB, XTDB specialized adapters
- Qdrant vector database adapter
- Meilisearch full-text search adapter
- InfluxDB time-series adapter
- iTop CMDB adapter
- Unified meta tools: `db_list`, `db_status`, `db_help`
- Cross-database `db_copy` tool (placeholder)
[1.2.0]: https://github.com/hyperpolymath/poly-db-mcp/compare/v1.1.0...v1.2.0
[1.1.0]: https://github.com/hyperpolymath/poly-db-mcp/compare/v1.0.0...v1.1.0
[1.0.0]: https://github.com/hyperpolymath/poly-db-mcp/releases/tag/v1.0.0
