PostgreSQL MCP Server vs io.github.schemacrawler/schemacrawler-ai
PostgreSQL MCP Server is an MCP server published by itunified-io. Marketplaces we read that list it: 1 (Official MCP Registry). io.github.schemacrawler/schemacrawler-ai is an MCP server published by schemacrawler. Marketplaces we read that list it: 2 (Official MCP Registry, Docker MCP Catalog). As of our marketplace pass on 2026-10-21. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  io.github.schemacrawler/schemacrawler-ai | |
|---|---|---|
| Official MCP Registry | Listed Version: 2026.4.10 Downloads/month (npm): 124 Downloads/week (npm): 32 Not marked · First seen |
Listed Version: v17.16.0-1 Forks (GitHub): 4 Stars (GitHub): 12 Not marked · First seen |
| Docker MCP Catalog | Not listed | Listed Version: sha256:3321b42e2bb8 Forks (GitHub): 4 Pulls (Docker Hub): 13 894 Stars (Docker Hub): 2 Stars (GitHub): 12 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | PostgreSQL MCP Server | io.github.schemacrawler/schemacrawler-ai |
|---|---|---|
| Marketplaces that list it (differs) | 1 (worse) | 2 (better) |
| Stars (GitHub) (differs) | No figure on GitHub | 12 |
| Pulls (Docker Hub) (differs) | No figure on Docker Hub | 13 894 |
| Forks (GitHub) (differs) | No figure on GitHub | 4 |
| Last release (differs) | Not published | 2026-10-14 |
| Where it runs (differs) | On your machine (@itunified.io/mcp-postgres) | On your machine (schemacrawler/schemacrawler-ai:17.16.0-1) |
| Transport | stdio | stdio |
| Tools it declares (differs) | Not published | 8 |
| Environment variables it asks for (differs) | 1, secrets among them: 0 | 13, secrets among them: 2 |
| Licence (differs) | Not stated | NOASSERTION |
| Repository (differs) | github.com/itunified-io/mcp-postgres | github.com/schemacrawler/schemacrawler-ai |
| Changes in the last 7 days (differs) | 0 | 2 |
| First seen | 2026-10-11 | 2026-10-11 |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
PostgreSQL MCP Server
PostgreSQL MCP Server — 27 tools for queries, schema, CRUD, DBA, HA & server management
io.github.schemacrawler/schemacrawler-ai
Enables natural language schema queries — explore tables, keys, procedures, and get SQL help fast
How to run each
PostgreSQL MCP Server As a local MCP server: npm package
claude mcp add --transport stdio postgres -- npx -y @itunified.io/mcp-postgresio.github.schemacrawler/schemacrawler-ai As a local MCP server: Docker image
claude mcp add --env "SCHCRWLR_DATABASE_PASSWORD=<YOUR_SCHCRWLR_DATABASE_PASSWORD>" --env "SCHCRWLR_DATABASE_USER=<YOUR_SCHCRWLR_DATABASE_USER>" --transport stdio schemacrawler-ai -- docker run -i --rm -e SCHCRWLR_DATABASE_PASSWORD -e SCHCRWLR_DATABASE_USER schemacrawler/schemacrawler-ai:17.16.0-1Requires: SCHCRWLR_DATABASE_PASSWORD (secret), SCHCRWLR_DATABASE_USER (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
The marketplaces of PostgreSQL MCP Server publish no list of tools, so we do not compare tools.
Settings each asks for
Only PostgreSQL MCP Server asks for
POSTGRES_CONNECTION_STRING
Only io.github.schemacrawler/schemacrawler-ai asks for
SCHCRWLR_DATABASESCHCRWLR_DATABASE_ALIASSCHCRWLR_DATABASE_DESCRIPTIONSCHCRWLR_DATABASE_PASSWORD (secret)SCHCRWLR_DATABASE_USER (secret)SCHCRWLR_EXCLUDE_TOOLSSCHCRWLR_HOSTSCHCRWLR_INFO_LEVELSCHCRWLR_JDBC_URLSCHCRWLR_LOG_LEVELSCHCRWLR_MCP_SERVER_TRANSPORTSCHCRWLR_PORT
Show the remaining 1
SCHCRWLR_SERVER
Settings as each marketplace publishes them. Asking for fewer is not better in itself.
What it can do: PostgreSQL MCP Server · What it can do: io.github.schemacrawler/schemacrawler-ai · Compare two other plugins
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Data comes from the Docker MCP Catalog (desktop.docker.com/mcp/catalog) and Docker Hub. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.