mcp-sql-server: Instructions file for Codex

AGENTS.md

mcp-sql-server AGENTS.md is an instructions file for Codex, OpenCode from harryvaldez/mcp-sql-server. It costs 631 tokens per session, scanned A, original, MIT.

Repository instructions for coding agents working on a Python service that connects to two SQL Server 2019 databases.

In plain words
What is it for?
Guiding edits to the service, including where to change database access, security, tools, diagnostics, and SQL read/write policies.
Why use it?
They explain the project structure, required checks, and security rules so changes stay within the intended boundaries.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is harryvaldez/mcp-sql-server's own configuration. It tells Codex and OpenCode how to work on mcp-sql-server itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mcp-sql-server configures →

Reuse

Borrowing it

Nothing to install: this file belongs to harryvaldez/mcp-sql-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/harryvaldez/mcp-sql-server/master/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/harryvaldez/mcp-sql-server

Made for: Codex, OpenCode.

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.

agentmods badge for mcp-sql-server AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/harryvaldez/mcp-sql-server/agents-md/github.svg)](https://agentmods.dev/instructions/harryvaldez/mcp-sql-server/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/harryvaldez/mcp-sql-server/agents-md"><img src="https://agentmods.dev/badge/instructions/harryvaldez/mcp-sql-server/agents-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.

agentmods 80×15 button for mcp-sql-server AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/harryvaldez/mcp-sql-server/agents-md"><img src="https://agentmods.dev/badge/instructions/harryvaldez/mcp-sql-server/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 631 This file is loaded in full into every session.
When invoked 631 The same file — it is already loaded in full.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00631 $0.00631
Opus 5.5 $0.00252 $0.00252
Sonnet 5.5 $0.00126 $0.00126
Haiku 4.5 $0.00063 $0.00063

Measured 2mo ago against content hash efdace12f810, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp-sql-server AGENTS.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 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.

AGENTS.md · 66 lines

How it starts

The opening of the file, as written. The whole thing — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS

Guidance for AI coding agents working in this repository.

Project Snapshot

  • Python 3.11+ FastMCP + FastAPI service for dual SQL Server 2019 instances.
  • Strong read-only posture with controlled-write guardrails, rate limiting, and diagnostics.
  • Runtime entry point: src/server.py.

Fast Start

  1. Create/activate a virtual environment.
  2. Install dependencies:
    • pip install -e .[dev]
  3. Run checks before proposing changes:
    • ruff check .
    • pytest -q

Architecture Boundaries

When adding features, keep changes inside the relevant boundary and avoid cross-cutting edits unless required.

Non-Negotiable Guardrails

  • Preserve read-only defaults and write controls:
  • Keep strict input validation for all tools and SQL-facing parameters.
  • Never expose secrets or connection details in logs, diagnostics, or errors.
  • Preserve deterministic error contracts and redaction behavior.
  • Do not weaken audit logging or rate limiting paths.

Change Workflow

  1. Read nearby tests first in tests/.
  2. Implement minimal, focused changes.
  3. Add/update tests for behavior changes.
  4. Run ruff check . and pytest -q.
  5. Update docs if behavior/config changes.

High-Value References

Read the full file on GitHub · 66 lines

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.

  1. 2mo ago First seen · 66 lines · 631 tokens per session scan A efdace12f810

Subscribe to this mod's changes

mcp-sql-server AGENTS.md is an instructions file published in the GitHub repository harryvaldez/mcp-sql-server (0 stars, last pushed 2mo ago), licensed MIT. It adds 631 tokens to every session, about $0.0025 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.

Related

mcp-sql-server AGENTS.md compared with instructions from other repositories

mcp-sql-server AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
mcp-sql-server AGENTS.mdharryvaldez/mcp-sql-serverInstructions file02mo agoMITA631Codex, OpenCode
plan-forge caching.instructions.mdsrnichols/plan-forgeInstructions file62d agoMITA733GitHub Copilot
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143kyesterdayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149kyesterdayMITA4,680Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot