PostgreSQL
Model Context ProtocolRuns read-only SQL against a Postgres database and returns the schema alongside results, which is what makes it usable without pasting table definitions into the prompt
PostgreSQL vs SQLite
Runs read-only SQL against a Postgres database and returns the schema alongside results, which is what makes it usable without pasting table definitions into the prompt On the other side: query and inspect a local sqlite file, including schema discovery and arbitrary select statements
Installnpx -y postgresql://localhost/mydbnpx -y ./data.db
SourceOfficialOfficial
Deciding factorYou are querying a real database and can give the agent a read-only role.versus: The data is a local file you imported once and nobody else is writing to.
Bottom line
Postgres for anything shared; SQLite for a file you own and nobody else writes.
The short answer
Postgres is the one you would run in production and the one to point at a read replica; the official server is archived, so check that it still matches your client. SQLite is a file, which makes it the honest choice for local analysis and a bad choice for anything concurrent.
Facts
| Option | Install | Source | Link |
|---|---|---|---|
| PostgreSQL | npx -y postgresql://localhost/mydb | Official | Repository ↗ |
| SQLite | npx -y ./data.db | Official | Repository ↗ |
Pick PostgreSQL if
You are querying a real database and can give the agent a read-only role.
Pick SQLite if
The data is a local file you imported once and nobody else is writing to.
What would change our mind
A project going archived, or a maintainer changing the install path, flips this comparison faster than any feature release. Both entries are re-checked weekly, and the date above tells you how much to trust the details.
Read the full entries
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