Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/joyous-coder/universal-db-mcp/claude-mdgit clone --depth 1 https://github.com/joyous-coder/universal-db-mcpWrote 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/instructions/joyous-coder/universal-db-mcp/claude-md)<a href="https://agentmods.dev/instructions/joyous-coder/universal-db-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/joyous-coder/universal-db-mcp/claude-md.svg" alt="Measured on agentmods" height="20"></a>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 | $0.01227 | $0.01227 |
| Opus 5 | $0.00613 | $0.00613 |
| Sonnet 5 | $0.00245 | $0.00245 |
| Haiku 4.5 | $0.00123 | $0.00123 |
Grade A, and why
universal-db-mcp CLAUDE.md 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 3d 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.
How it starts
The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides AI coding agents with project-specific context and work constraints.
Project Snapshot
- Name:
@joyous-coder/universal-db-mcp - Purpose: MCP server connecting Claude Desktop (or any MCP client) to 17 database types (MySQL/PostgreSQL/Oracle/SQL Server/DM/Kingbase/GaussDB/MongoDB/Redis/SQLite/ClickHouse/etc.)
- Language: TypeScript (Node 20+)
- Runtime modes: stdio (Claude Desktop) | HTTP REST | MCP SSE / Streamable HTTP
- Latest release: see GitHub Releases (v3.2.1 as of 2026-07-25)
Release Process
This project publishes via GitHub Actions + NPM Trusted Publishing (OIDC). No NPM_TOKEN secret required.
Full step-by-step guide: see CONTRIBUTING.md § "📦 发布流程".
Quick summary:
- Bump
versioninpackage.json+ add CHANGELOG entry →git commit→git tag vX.Y.Z git push origin main+git push origin vX.Y.Zgh release create vX.Y.Z --notes-file release-notes.md --verify-tag.github/workflows/publish.yml(trigger:release: created) auto-runsnpm publish --provenance --access public- Verify via
gh release view vX.Y.Z+ check npmjs.com
If workflow doesn't auto-trigger (rare):
gh workflow run publish.yml --ref vX.Y.Z
Do NOT use manual npm login + npm publish — bypasses Trusted Publishing OIDC and breaks the provenance chain.
Release notes format (avoid duplicate version title):
release-notes.md文件不要用# vX.Y.Z Release Notes这种头,因为gh release create --notes-file已经会自动把 tag 名vX.Y.Z加到标题里。直接以## 摘要/## 改动/## 测试等正文 section 开头即可,避免双重标题。- v4.0.5 案例:publish workflow 报告 403 失败,但 npm 实际接受 — 因为 npmjs OIDC 不让重发已 publish 的版本。核对 npmjs
npm view @scope/pkg@latest dist-tags确认实际状态,不要只看 workflow run 结论。
AI Work Constraints
When working on this codebase, AI agents (Claude Code, etc.) must follow these rules:
Pre-commit / Pre-PR
- All tests pass:
npm testexits 0 (don't ship green CI breakages) - TypeScript compiles:
npm run buildexits 0 - No untracked working tree:
git statusclean before commit - CHANGELOG.md updated: if the change affects user-visible behavior, add an entry under "未发布" (unreleased) or the current dev version
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.
- 3d ago First seen · 83 lines · 1,227 tokens per session scan A 9c781b8f5315
universal-db-mcp CLAUDE.md is an instructions file published in the GitHub repository joyous-coder/universal-db-mcp (0 stars, last pushed 15d ago), licensed MIT. It adds 1,227 tokens to every session, about $0.0061 per session on Opus 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 2026-08-31.
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