Borrowing it
Nothing to install: this file belongs to mirenqinggege/postgres-mcp. 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/mirenqinggege/postgres-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/mirenqinggege/postgres-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/mirenqinggege/postgres-mcp/claude-md)<a href="https://agentmods.dev/instructions/mirenqinggege/postgres-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/mirenqinggege/postgres-mcp/claude-md/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/instructions/mirenqinggege/postgres-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/mirenqinggege/postgres-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.01101 | $0.01101 |
| Opus 5 | $0.00550 | $0.00550 |
| Sonnet 5 | $0.00220 | $0.00220 |
| Haiku 4.5 | $0.00110 | $0.00110 |
Grade A, and why
postgres-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 8d 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 — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
项目概述
Postgres MCP Pro 是一个 PostgreSQL MCP (Model Context Protocol) 服务器,提供索引调优、执行计划分析、健康检查和安全 SQL 执行功能。
常用命令
开发设置
# 安装依赖
uv sync
# 运行服务器 (stdio 模式)
uv run postgres-mcp --access-mode=unrestricted
# 运行服务器 (SSE 模式)
uv run postgres-mcp --access-mode=unrestricted --transport=sse
# 运行服务器 (streamable-http 模式)
uv run postgres-mcp --access-mode=unrestricted --transport=streamable-http
测试
# 运行所有测试 (需要 Docker)
uv run pytest -v --log-cli-level=INFO
# 运行单个测试文件
uv run pytest tests/unit/sql/test_safe_sql.py -v
# 运行单个测试
uv run pytest tests/unit/sql/test_db_conn_pool.py::test_pool_connect_success -v
代码质量检查
# 格式化检查
uv run ruff format --check .
# 格式化修复
uv run ruff format .
# Lint 检查
uv run ruff check .
# Lint 修复
uv run ruff check . --fix
# 类型检查
uv run pyright
构建
uv build
核心架构
主入口
src/postgres_mcp/__init__.py:main()入口点src/postgres_mcp/server.py: FastMCP 服务器定义,包含所有 MCP 工具
MCP 工具 (server.py)
| 工具名 | 功能 |
|---|---|
list_schemas |
列出数据库所有 schema |
list_objects |
列出 schema 内的对象 (表、视图、序列、扩展) |
get_object_details |
获取对象详细信息 (列、约束、索引) |
execute_sql |
执行 SQL (受访问模式限制) |
explain_query |
获取查询执行计划,支持假设索引模拟 |
get_top_queries |
基于 pg_stat_statements 报告最慢查询 |
analyze_workload_indexes |
分析工作负载并推荐索引 |
analyze_query_indexes |
分析特定查询并推荐索引 |
analyze_db_health |
全面健康检查 |
模块结构
-
sql: 数据库连接池 (
DbConnPool) 和 SQL 执行驱动 (SqlDriver,SafeSqlDriver)safe_sql.py: 只读事务保护,使用 pglast 解析 SQL 防止绕过bind_params.py: 参数绑定,从表统计信息采样生成参数值extension_utils.py: 检查 pg_stat_statements 和 hypopg 扩展状态
-
index: 索引调优 (基于 Microsoft DTA Anytime Algorithm)
dta_calc.py: DatabaseTuningAdvisor 核心算法index_opt_base.py: 基础索引优化类llm_opt.py: 实验性 LLM 索引优化
-
database_health: 数据库健康检查 (源自 PgHero)
- 索引健康、缓冲缓存命中率、连接健康、Vacuum 健康、复制健康、约束健康、序列健康
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.
- 8d ago First seen · 127 lines · 1,101 tokens per session scan A a8982cf91173
postgres-mcp CLAUDE.md is an instructions file published in the GitHub repository mirenqinggege/postgres-mcp (0 stars, last pushed 4mo ago), licensed MIT. It adds 1,101 tokens to every session, about $0.0055 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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vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
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spec-kit AGENTS.md
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