A database documentation helper that examines a database structure and how it is used, then creates a RULE.md guidance file. The file helps with report writing and data modeling.

It helps build or update reporting rules, save them in a project or administration database, and describe database structures without changing stored data.

It records database-specific rules in a form people and coding agents can read and edit, reducing repeated explanations about the database.

How redgreat/db_mcp_server configures Claude Code and Codex

Reuse

Borrowing it

Nothing to install: this file belongs to redgreat/db_mcp_server. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/redgreat/db_mcp_server/main/.trae/skills/db-rule/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/redgreat/db_mcp_server

Made for: Claude Code, Codex.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/redgreat/db_mcp_server/db-rule/github.svg)](https://agentmods.dev/skills/redgreat/db_mcp_server/db-rule)

Your own site

<a href="https://agentmods.dev/skills/redgreat/db_mcp_server/db-rule"><img src="https://agentmods.dev/badge/skills/redgreat/db_mcp_server/db-rule/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/redgreat/db_mcp_server/db-rule"><img src="https://agentmods.dev/badge/skills/redgreat/db_mcp_server/db-rule.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 173 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00028	$0.00173
Opus 5.5	$0.00011	$0.00069
Sonnet 5.5	$0.00006	$0.00035
Haiku 4.5	$0.00003	$0.00017

Measured 2mo ago against content hash a25b3aeba7bf, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

db-rule 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 2mo 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.

.trae/skills/db-rule/SKILL.md · 24 lines

What it actually says

Database Rule Author

Generates a RULE.md for a target database as structured guidance for report generation and data modeling.

Inputs:

connection_id: integer
database: optional string (defaults to connection database)
save_to_project: bool (default true) — writes to rules//RULE.md
save_to_admin: bool (default true) — persists to admin DB db_rules
project_base: optional project root override
title/version/tags: optional metadata

Call: generate_db_rule with the above arguments.

Notes:

Only introspects metadata (no data mutation).
Output is human-editable and intended as long-lived memory for the skill.

Changes

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.

2mo ago First seen · 24 lines · 28 tokens per session scan A a25b3aeba7bf

Subscribe to this mod's changes

db-rule is a skill published in the GitHub repository redgreat/db_mcp_server (2 stars, last pushed 11d ago), licensed MIT. It adds 28 tokens to every session and 173 once invoked, about $0.0001 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 2026-08-31.

Databases

db-rule next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
db-ruleredgreat/db_mcp_server	Skill	2	11d ago	MIT	A	28	Claude Code, Codex
create-prprisma/orm	Skill	48k	yesterday	Apache-2.0	A	48	Claude Code, Codex
schema-explorationlangchain-ai/deepagents	Skill	31k	yesterday	MIT	A	57	Claude Code, Codex
atlas-mssqlariga/atlas	Skill	8.8k	yesterday	Apache-2.0	A	163	Claude Code
ha-data-storesshiwenwen/hope-agent	Skill	1.9k	yesterday	MIT	A	115	Claude Code, Codex
nornicdb-cypher-queriesorneryd/NornicDB	Skill	923	yesterday	MIT	A	79	Claude Code, Codex
volcengine-rds-postgresqlbytedance/agentkit-samples	Skill	484	today	Apache-2.0	A	63	Claude Code, Codex

db_mcp_server: Skill for Claude Code