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postgres-mcp MCP Server

Enterprise PostgreSQL MCP server with NL queries, hybrid search (pgvector+BM25), and web UI

Publisher claimed. No tool list reported, and Pod has not connected to this server.

Status

Pod has not dialled postgres-mcp yet, so everything on this page is what its publisher reported rather than what we observed. Registries describe servers; they do not connect to them. Until a check runs, treat the tool list below as a claim.

Connect

Published as ghcr.io/pgedge/postgres-mcp:latest on oci. Runs locally.

Known issues

78 problems reported by people outside the maintainer team. Issues filed by the project's own owners, members and collaborators are excluded — those are release checklists and internal refactors, not things that will go wrong for you. Showing 12.

Most discussed

Add multi-host connection support for high availability and failover

Summary

Add support for libpq multi-host connection strings, enabling automatic failover and read-write routing across multiple PostgreSQL servers.

Motivation

Production PostgreSQL deployments commonly use streaming replication with multiple nodes. The MCP server currently accepts a single host and port per database connection, requiring users to point at a single server with no failover capability. Adding multi-host support lets pgx try each configured host in order and connect to whic

Read the thread · 2026-03-10 · closed · outside contributor · 11 comments

Web GUI Loses Connection When Switching Between Multiple Databases in MCP Server

I have observed a bug in the MCP Server Web GUI when configuring and switching between multiple databases.

Issue Summary When multiple databases are configured in the MCP server YAML file, switching from the default database to another database via the Web GUI causes the connection to drop and results in a JSON parsing error.

Configuration Details The MCP server is configured with two databases in the YAML file, for example:

databases:

  • name: "default" host: localhost port: 543

Read the thread · 2026-01-20 · closed · outside contributor · 7 comments

Need some help to setup a pgedge postgres MCP Server

Hi,

I am trying to set up your MCP Server but it does not seem to start properly. I do not have enough logs to tell me whats wrong

Here is the log I can get:

pgedge-postgres-mcp  | Starting pgEdge Natural Language Agent...
pgedge-postgres-mcp  | Data directory: /var/lib/pgedge/mcp-server
pgedge-postgres-mcp  | Starting MCP server
pgedge-postgres-mcp  | Connected to database: xxx_reader@xxx:5432/xxx
pgedge-postgres-mcp  | Authentication: DISABLED
pgedge-postgres-mcp  | Starting MCP ser

[Read the thread](https://github.com/pgEdge/pgedge-postgres-mcp/issues/145) · 2026-05-06 · closed · external user · 4 comments

### Server should not exit when one of multiple configured databases is unreachable at startup

**Describe the bug**

When multiple databases are configured, the MCP server attempts to connect to all of them at startup. If any single database is unreachable (network issue, VPN not connected, temporary outage), the entire server exits with an error. This makes the server unusable in environments where not all databases are always accessible.

**To Reproduce**

1. Configure multiple databases, where one is temporarily unreachable:
```yaml
databases:
  - name: "local_db"
    host: "localhost"

[Read the thread](https://github.com/pgEdge/pgedge-postgres-mcp/issues/82) · 2026-02-25 · closed · external user · 4 comments

### Need a script and clear "quick start" documentation for running the MCP server standalone

There are scripts and getting started instructions for running the MCP with both the web and CLI clients, but not standalone.   Maybe the quick start should be titled something like "Running the MCP server with other clients and agents".

[Read the thread](https://github.com/pgEdge/pgedge-postgres-mcp/issues/80) · 2026-02-25 · closed · outside contributor · 4 comments

### Most recent

### pgedge-postgres-mcp server reports MCP protocol version 2024-11-05, incompatible with Streamable HTTP-only clients (e.g., OpenAI Codex)

The MCP server's initialize response always returns "protocolVersion": "2024-11-05", regardless of what protocol version the client requests. Confirmed via direct initialize calls:

- Cloud endpoint (server v1.0.0): reports 2024-11-05
- Upgraded staging test build (server v1.1.0-beta1): also reports 2024-11-05

So this isn't fixed by the version upgrade already in progress, it's present in every build tested so far.

Why it matters: "Streamable HTTP" as an MCP transport was introduced in protoco

[Read the thread](https://github.com/pgEdge/pgedge-postgres-mcp/issues/277) · 2026-08-24 · closed · outside contributor · 1 comment

### query_database: FETCH FIRST ... ROWS ONLY is not recognised as a limit, so the appended LIMIT makes PostgreSQL reject the query

### Summary

`query_database` appends `LIMIT n+1` whenever a statement looks like a SELECT and does not already contain a `LIMIT`, but the "already has a limit" check only recognises the literal keyword `LIMIT`. A query that bounds its rows with the SQL-standard `FETCH FIRST n ROWS ONLY` therefore gets a second, conflicting clause appended and PostgreSQL rejects it.

`internal/tools/query_database.go` (main, `b971c41`):

```go
// line 42
var limitKeywordPattern = regexp.MustCompile(`(?i)(?:^|[^A

[Read the thread](https://github.com/pgEdge/pgedge-postgres-mcp/issues/276) · 2026-08-21 · closed · 1 comment

### query_database: a leading comment or parenthesised SELECT is not classified as SELECT, so no row cap and no truncation marker

### Summary

`query_database` decides whether a statement is a SELECT with a **prefix test over raw text**, so a query that begins with a `--` comment, a `/* */` comment, or an opening `(` is not recognised as a SELECT. The consequences differ by build and both are wrong.

`internal/tools/query_database.go` (main, `b971c41`), lines 298-301:

```go
isSelectQuery := strings.HasPrefix(upperQuery, "SELECT") ||
    strings.HasPrefix(upperQuery, "WITH") ||
    strings.HasPrefix(upperQuery, "TABLE") ||

[Read the thread](https://github.com/pgEdge/pgedge-postgres-mcp/issues/275) · 2026-08-21 · closed · 1 comment

### query_database: the limit argument is never validated, and limit=0 or a negative value removes the cap entirely (follow-up to #260)

**Follow-up to #260**, which fixed one of the two ways the cap is defeated. Verified against
`origin/main` @ `b971c41` — the lines below are current, not the pre-fix code.

#260's premise is *"The query tool is supposed to cap results at 1,000 rows for safety. It doesn't."*
`queryHasClause` now handles the string-literal/identifier/comment false positive, so that half is
fixed. The other half was never in scope: **the `limit` argument itself is not validated against the
bounds the tool advertise

[Read the thread](https://github.com/pgEdge/pgedge-postgres-mcp/issues/273) · 2026-08-20 · closed · 1 comment

### Default knowledgebase config in RPM ships enabled with invalid path

The default postgres-mcp.yaml shipped with the pgedge-postgres-mcp RPM package has the knowledgebase feature enabled with a hardcoded path that does not exist:

knowledgebase: enabled: true database_path: /usr/share/pgedge/pgedge-ai-kb/kb.db

The actual KB database filename is provider and model specific. For example:

kb-openai-text-embedding-3-small.db kb-gemini-gemini-embedding-001.db

The file kb.db is never created by any package, so the server starts with a broken knowle

[Read the thread](https://github.com/pgEdge/pgedge-postgres-mcp/issues/272) · 2026-08-17 · closed · outside contributor · 1 comment

### GET /api/user/info panics on a nil UserStore when HTTP auth is disabled

## Summary

`GET /api/user/info` with any `Authorization: Bearer <token>` header panics with a nil pointer dereference when the server is started with HTTP auth disabled (`-no-auth`, or any config with `http.auth.enabled: false`).

## Steps to reproduce

./bin/pgedge-postgres-mcp -http -addr localhost:8080 -no-auth -debug curl -H "Authorization: Bearer anything" http://localhost:8080/api/user/info


Server log shows:

panic: runtime error: invalid memory address or nil pointer derefer

Read the thread · 2026-08-13 · closed · outside contributor · 0 comments

Feature request: metadata-only trace mode (no query text or results)

Context: drydock (pgEdge Cloud's multi-tenant platform) wants a per-token/per-user audit trail for MCP tool calls — "which bearer token ran this query, when, did it succeed." The existing trace_file / -trace-file mechanism already logs exactly that shape of event (session ID, token hash, tool name, duration, success/failure), which is why it looked like the right fit at first.

The problem: LogToolCall/LogToolResult currently also serialize the full tool arguments and full tool r

Read the thread · 2026-08-12 · closed · outside contributor · 0 comments

See all 24 reports Pod holds for postgres-mcp — of 78 qualified upstream.

Firsthand observations

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