gpt-tool-use: Instructions file for Codex

AGENTS.md

gpt-tool-use AGENTS.md is an instructions file for Codex, OpenCode from kev489/gpt-tool-use. It costs 1,787 tokens per session, scanned B, original, no licence file.

Repository instructions for kev489/gpt-tool-use, an MCP server that uses Playwright browser automation to route Claude Code research and image-generation requests through ChatGPT. Playwright is a tool for controlling a web browser with code.

In plain words
What is it for?
Working safely in the repository and understanding its browser-automation connection between Claude Code and ChatGPT.
Why use it?
It tells a coding agent how this project works and which rules and checks apply while changing it.

Instructions file for CodexOpenCode

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

This is kev489/gpt-tool-use's own configuration. It tells Codex and OpenCode how to work on gpt-tool-use 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 gpt-tool-use configures →

Reuse

Borrowing it

Nothing to install: this file belongs to kev489/gpt-tool-use. 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/kev489/gpt-tool-use/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/kev489/gpt-tool-use

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 gpt-tool-use AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/kev489/gpt-tool-use/agents-md/github.svg)](https://agentmods.dev/instructions/kev489/gpt-tool-use/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/kev489/gpt-tool-use/agents-md"><img src="https://agentmods.dev/badge/instructions/kev489/gpt-tool-use/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 gpt-tool-use AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/kev489/gpt-tool-use/agents-md"><img src="https://agentmods.dev/badge/instructions/kev489/gpt-tool-use/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,787 This file is loaded in full into every session.
When invoked 1,787 The same file — it is already loaded in full.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.01787 $0.01787
Opus 5.5 $0.00715 $0.00715
Sonnet 5.5 $0.00357 $0.00357
Haiku 4.5 $0.00179 $0.00179

Measured 1mo ago against content hash 89ca306b910f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

gpt-tool-use AGENTS.md scanned grade B with 1 finding 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 1mo 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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

(`~/.codex/config.toml`, `~/.codex-app-alt/config.toml` under `[mcp_servers.gpt-tools]`)
AGENTS.md · 75 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 1mo ago Changed · +73 lines · +1,781 tokens per session scan A → B 89ca306b910f
  2. 2mo ago First seen · 2 lines · 6 tokens per session scan A e9a7ddcee534

Subscribe to this mod's changes

gpt-tool-use AGENTS.md is an instructions file published in the GitHub repository kev489/gpt-tool-use (0 stars, last pushed 1mo ago), with no licence file. It adds 1,787 tokens to every session, about $0.0071 per session on Opus 5.5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

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