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Database Connection Checker

Test PostgreSQL, MySQL, MongoDB, and Redis connections, inspect read-only metadata, and convert database URIs for Navicat, TablePlus, DBeaver, DataGrip, Prisma, Laravel, and CLI workflows.

Practical guide

Database Connection Checker is built for developers who need to verify a PostgreSQL, MySQL/MariaDB, MongoDB, or Redis connection string before it reaches production. Paste a URI or fill connection fields, run a public server-side connectivity test, inspect read-only metadata, and convert the same settings for Navicat, TablePlus, DBeaver, DataGrip, Prisma, Laravel, and CLI workflows. Sensitive output is masked by default, and internal targets such as localhost, private IPs, link-local ranges, and reserved networks are blocked to reduce SSRF and port-scan risk.

Where this fits

Validate database settings before a release

A connection string can look correct in .env and still fail because the host is private, the port is closed, TLS is required, the database name is wrong, or the user has limited permissions. A live check catches those mistakes before a deploy, migration, worker rollout, or customer handoff depends on the connection.

Move one connection across several tools

Teams rarely use a single database client. One person may use Navicat, another TablePlus, another DBeaver, and the application may need Prisma or Laravel environment variables. The converter creates practical output for those targets while preserving a masked version that can be pasted into tickets or runbooks.

Inspect structure without reading application data

When you need to confirm that a schema exists, a collection is visible, an index is present, or Redis is responding on the expected database number, read-only metadata is enough. SQL inspection uses catalog and information_schema queries; MongoDB uses collection stats and indexes when permitted; Redis uses INFO and DBSIZE without reading key values.

How to use Database Connection Checker

  1. 1Paste a URI or enter fieldsUse Auto Detect for standard postgresql://, mysql://, mongodb://, mongodb+srv://, redis://, or rediss:// URIs. Use field mode when a password manager or deployment panel stores host, port, username, password, database, and SSL mode separately.
  2. 2Run a connection testClick Test connection for a one-shot server-side check. The API validates that the target is public, applies a short timeout, opens the correct database driver, runs a minimal ping query, and closes the client.
  3. 3Inspect metadata when neededClick Inspect metadata to list tables, columns, indexes, collections, collection stats, Redis server info, and keyspace summaries where permissions allow. The tool does not sample table rows or Redis values.
  4. 4Copy converted outputsUse the converter tab to copy standard URI, Navicat helper, TablePlus URL, DBeaver -con command, DataGrip/JDBC URL, Prisma .env, Laravel .env, or a CLI command. Keep secret masking enabled when sharing output with a teammate.

Practical notes

Public-only checks are intentional

This tool runs from Appkiro's server environment, not your laptop. Localhost, private IPs, VPN-only hosts, and VPC-only databases should be tested from a bastion host, CI runner, or internal diagnostic tool instead.

Use SSL/TLS for real credentials

If you paste a real username and password for a public database, prefer SSL/TLS require when the provider supports it. Connection failures around certificates, TLS mode, and firewall rules often explain why an app works locally but fails after deployment.

Navicat output stays honest

Navicat 17 documents New Connection with URI for Navicat URI or MongoDB URI. The tool therefore outputs a MongoDB URI when that is valid, and a SQL/Redis field map instead of inventing a proprietary navicat:// URL that may fail silently.

Do not paste production secrets into shared screenshots

The converter masks secrets by default. Leave masking enabled for screenshots, bug reports, onboarding docs, and support tickets. Reveal secrets only on a trusted device when you need to copy directly into a private secret manager.

Check reachability, normalize the URI, then move the secret into the runtime environment that will actually run the app.

  1. 1

    Test the database connection here

  2. 2

    Key Generator

  3. 3

    My IP Address

  4. 4

    JWT Debugger

Questions worth checking

Does Appkiro store my database connection string?

No. The browser UI keeps the current value only in the page state, and the live-check API returns masked output. Do not use the reveal option when preparing screenshots or shared documentation.

Why are localhost and private IP addresses blocked?

A public database checker can otherwise become an SSRF or port-scanning tool. Appkiro blocks localhost, private ranges, link-local addresses, documentation ranges, multicast/reserved ranges, and hosts that resolve to those addresses.

Does schema inspection read table rows or Redis key values?

No. SQL inspection reads catalog metadata only, MongoDB inspection reads collection stats and index definitions when permitted, and Redis inspection reads server/keyspace summaries without reading key values.

Why not generate a navicat:// URI for every database?

Navicat 17 documents URI input for Navicat URI or MongoDB URI. For SQL and Redis, the tool provides a documented-safe helper: host, port, user, database, SSL mode, and a driver URI for app or CLI use.

Can this test a database inside a VPN or private cloud?

No. Use an internal runner, bastion host, or deployment platform health check for private databases. This public tool is limited to public hosts by design.