PlyDB

Spec sheet

What it does

PlyDB is an open-source database gateway that lets AI agents query live data sources using standard SQL.Read 8 Oct 2026 · plydb.com

Product

PlyDB is an open-source database gateway that lets AI agents query live data sources using standard SQL.Read 7 Oct 2026 · plydb.com

Intended users

The site presents use cases for DevOps incident response, sales and retention, revenue operations, and executive insights.Read 7 Oct 2026 · plydb.com

Privacy

PlyDB runs locally and queries sources directly; the FAQ says only query results are returned to the AI agent.Read 7 Oct 2026 · plydb.com

License

PlyDB is open source under the Apache 2.0 license.Read 8 Oct 2026 · plydb.com

Maker

The site footer identifies Paul Tzen.Read 8 Oct 2026 · plydb.com

Access control

PlyDB is read-only by default, and its page says writes require explicit permission.Read 7 Oct 2026 · plydb.com

Agent access

AI agents connect through MCP or the PlyDB CLI to discover schemas, run SQL queries, and analyze data.Read 8 Oct 2026 · plydb.com

Agent integration

AI agents can connect to PlyDB through MCP or CLI, including Claude, ChatGPT, Gemini, and Codex.Read 7 Oct 2026 · plydb.com

AI compatibility

The site lists Claude, ChatGPT, Gemini, and Codex among agents that work with PlyDB.Read 8 Oct 2026 · plydb.com

Cross-source queries

PlyDB can federate sources so a single SQL query can join data such as a PostgreSQL table, CSV file, and Google Sheet.Read 8 Oct 2026 · plydb.com

Cross-source SQL

PlyDB can join data from sources such as PostgreSQL, CSV files, and Google Sheets in one SQL query.Read 7 Oct 2026 · plydb.com

Data movement

PlyDB executes queries directly against connected sources without copying or staging data.Read 8 Oct 2026 · plydb.com

Google Sheets authentication

Google Sheets supports service account authentication for server-side use and browser OAuth for interactive querying.Read 8 Oct 2026 · plydb.com

Installation

The site provides installation commands for macOS, Linux, and Windows and describes PlyDB as a single binary with no runtime dependencies.Read 7 Oct 2026 · plydb.com

Installation platforms

The installation instructions provide quick-install commands for macOS, Linux, and Windows, and say pre-built binaries are available for all platforms.Read 8 Oct 2026 · plydb.com

Integration limitation

The CLI requires shell access, while an MCP server must be restarted to pick up configuration changes.Read 8 Oct 2026 · plydb.com

Local operation

PlyDB runs locally and queries sources directly; the FAQ says data stays in the user's infrastructure and only query results go to the AI agent.Read 8 Oct 2026 · plydb.com

Planned sources

Apache Iceberg and Delta Lake are listed as planned and are not yet supported.Read 8 Oct 2026 · plydb.com

Read-only behavior

PlyDB is read-only by default, and the site says agents cannot alter original data unless explicitly allowed.Read 8 Oct 2026 · plydb.com

Semantic context

PlyDB automatically scans sources for schemas, tables, columns, types, and database COMMENT metadata to provide agents with semantic context.Read 8 Oct 2026 · plydb.com

Supported sources

Supported sources include PostgreSQL, MySQL, SQLite, DuckDB, CSV, JSON, Parquet, Excel, Amazon S3, and Google Sheets.Read 8 Oct 2026 · plydb.com

Where Specifiction places it

• Data Federation Software#18 of 247.3