mcp: Instructions file for Codex

AGENTS.md

mcp AGENTS.md is an instructions file for Codex, OpenCode from supabase/mcp. It costs 25 tokens per session, scanned A, original, Apache-2.0.

A contribution guide reminder for the supabase/mcp project. It tells you to read CONTRIBUTING.md before opening an issue or pull request.

In plain words
What is it for?
Use it when preparing an issue or pull request for supabase/mcp.
Why use it?
It helps avoid submitting issues or code changes that do not follow the project's contribution rules.

Instructions file for CodexOpenCode ✓ vendor

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

This is supabase/mcp's own configuration. It tells Codex and OpenCode how to work on mcp 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 configures →

About the project

Supabase MCP Server connects AI assistants to Supabase projects through the Model Context Protocol, allowing them to manage tables, retrieve configuration, and run database queries. It is for developers using assistants such as Cursor, Claude, or Windsurf with Supabase, and the catalogue entries provide instructions and an MCP connection for that integration.

supabase/mcp · 2,994 stars · on GitHub · supabase.com

Reuse

Borrowing it

Nothing to install: this file belongs to supabase/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.

Copy the file
curl -O https://raw.githubusercontent.com/supabase/mcp/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/supabase/mcp

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 AGENTS.md

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

Your own site · 80×15
<a href="https://agentmods.dev/instructions/supabase/mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/supabase/mcp/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 25 This file is loaded in full into every session.
When invoked 25 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 $0.00025 $0.00025
Opus 5.5 $0.00010 $0.00010
Sonnet 5.5 $0.00005 $0.00005
Haiku 4.5 $0.00003 $0.00003

Measured 2mo ago against content hash 5509e3e32e77, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp 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 · 4 lines

What it actually says

Contributing

Before opening an issue or pull request, read CONTRIBUTING.md and follow its guidance.

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 · 4 lines · 25 tokens per session scan A 5509e3e32e77

Subscribe to this mod's changes

mcp AGENTS.md is an instructions file published in the GitHub repository supabase/mcp (2,994 stars, last pushed today), licensed Apache-2.0. It adds 25 tokens to every session, 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 2026-08-30.

Related

mcp AGENTS.md compared with instructions from other repositories

mcp AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
mcp AGENTS.mdsupabase/mcpInstructions file3.0ktodayApache-2.0A25Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143ktodayMITA7,461Codex, 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
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode