DBHub is a lightweight Model Context Protocol server that lets compatible AI clients connect to and explore PostgreSQL, MySQL, MariaDB, SQL Server, and SQLite databases through one interface. Developers and other users employ it for schema inspection, query validation, debugging, and controlled read-only database access; the catalogue entries provide agent skills, instructions, an MCP configuration, and a plugin.
Borrowing it
Nothing to install: this file belongs to bytebase/dbhub. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/bytebase/dbhub/main/.claude/skills/testing/SKILL.mdgit clone --depth 1 https://github.com/bytebase/dbhubWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/bytebase/dbhub/testing)<a href="https://agentmods.dev/skills/bytebase/dbhub/testing"><img src="https://agentmods.dev/badge/skills/bytebase/dbhub/testing/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/bytebase/dbhub/testing"><img src="https://agentmods.dev/badge/skills/bytebase/dbhub/testing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00067 | $0.01767 |
| Opus 5.5 | $0.00027 | $0.00707 |
| Sonnet 5.5 | $0.00013 | $0.00353 |
| Haiku 4.5 | $0.00007 | $0.00177 |
Grade A, and why
testing scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 20d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
1 near-identical copy found in the catalogue:
- testing — 100% identical, 12 lines differ
How it starts
The opening of the file, as written. The whole thing — 168 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Testing Skill
This skill helps you run, write, and troubleshoot tests in the DBHub project.
Test Commands
pnpm test # Run all tests (unit + integration)
pnpm test:unit # Unit tests only (no Docker needed)
pnpm test:watch # Interactive watch mode
pnpm test:integration # Integration tests only (requires Docker)
Run a specific test file:
pnpm test src/connectors/__tests__/postgres.integration.test.ts
pnpm test src/utils/__tests__/allowed-keywords.test.ts
Run tests matching a name pattern:
pnpm test -- --testNamePattern="PostgreSQL"
Verbose output for debugging:
pnpm test:integration --reporter=verbose
Test Architecture
Vitest is configured with two projects in vitest.config.ts:
- unit: All
*.test.tsfiles excluding*integration*in the filename - integration: Only
*integration*.test.tsfiles
This means the naming convention matters — integration tests MUST have integration in their filename to be correctly categorized.
Test File Locations
Unit tests (~20 files, no Docker needed):
src/utils/__tests__/— Utility function tests (SQL parsing, DSN obfuscation, SSH config, allowed keywords, identifier quoting, parameter mapping, row limiting, safe URL, config watcher, AWS RDS signer)src/tools/__tests__/— Tool handler tests (execute-sql, search-objects, custom-tool-handler)src/config/__tests__/— Configuration tests (env parsing, TOML loading)src/connectors/__tests__/— Connector unit tests (dsn-parser, manager)src/requests/__tests__/— Request store tests
Integration tests (~11 files, Docker required):
src/connectors/__tests__/postgres.integration.test.tssrc/connectors/__tests__/mysql.integration.test.tssrc/connectors/__tests__/mariadb.integration.test.tssrc/connectors/__tests__/sqlserver.integration.test.tssrc/connectors/__tests__/oracle.integration.test.tssrc/connectors/__tests__/sqlite.integration.test.tssrc/connectors/__tests__/postgres-ssh.integration.test.tssrc/connectors/__tests__/multi-sqlite-sources.integration.test.tssrc/__tests__/json-rpc-integration.test.tssrc/api/__tests__/sources.integration.test.tssrc/api/__tests__/requests.integration.test.tssrc/config/__tests__/ssh-config-integration.test.ts
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 20d ago Changed · +10 lines cf33a88c9a65
- 1mo ago Changed · +2 lines a2300224619f
- 2mo ago First seen · 156 lines · 67 tokens per session scan A 751c29f59298
testing is a skill published in the GitHub repository bytebase/dbhub (3,753 stars, last pushed 3d ago), licensed MIT. It adds 67 tokens to every session and 1,767 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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