Chat2Agent: Instructions file for Codex

AGENTS.md

Chat2Agent AGENTS.md is an instructions file for Codex, OpenCode from xiaoxiao341/Chat2Agent. It costs 275 tokens per session, scanned A, original, MIT.

A project instruction file for Chat2Agent, an open-source bridge that lets ChatGPT's web conversations reach a local computer through an MCP and OAuth connection. MCP is a standard way for AI systems to call external tools.

In plain words
What is it for?
Use it when developing or reviewing the bridge, its local-workspace access, resource discovery, provider integrations, or web-facing capability rules.
Why use it?
It defines safety and product boundaries so the bridge can expose selected local capabilities without changing the local coding agent or leaking private resources.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions subagents; mentions AGENTS.md; mentions Codex.

This is xiaoxiao341/Chat2Agent's own configuration. It tells Codex and OpenCode how to work on Chat2Agent 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 Chat2Agent configures →

Reuse

Borrowing it

Nothing to install: this file belongs to xiaoxiao341/Chat2Agent. 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/xiaoxiao341/Chat2Agent/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/xiaoxiao341/Chat2Agent

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.

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README.md
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Your own site
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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 Chat2Agent AGENTS.md

Your own site · 80×15
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Per session 275 This file is loaded in full into every session.
When invoked 275 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 $0.00275 $0.00275
Opus 5.5 $0.00110 $0.00110
Sonnet 5.5 $0.00055 $0.00055
Haiku 4.5 $0.00028 $0.00028

Measured 2mo ago against content hash 059faf8a0444, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Chat2Agent 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 · 10 lines

What it actually says

Project Scope

  • This repository exists to let ChatGPT's web conversation mode reach the local machine through a public MCP/OAuth bridge and perform coding work as close as practical to a Codex Agent.
  • Do not modify or disrupt the local Codex Agent, including its installed capabilities, global configuration, or normal local workflow.
  • The local Codex Agent is not a product client or part of the runtime topology. However, DevSpace may discover and expose selected reusable Codex resources, such as applicable AGENTS.md instructions, Skills, and compatible Hook behavior, to ChatGPT web conversations without changing the originals or the local Codex runtime.
  • Reuse Codex resources through read-only discovery or an explicit compatibility layer. Keep unsupported, secret-bearing, machine-private, or local-runtime-only resources out of the web-facing capability surface.
  • Provider-backed Subagents are optional integrations, not part of the default web-chat capability path. They may consume the selected local provider account or API quota and must never be recommended or launched implicitly.
  • Product recommendations and implementation should focus on the web ChatGPT connector experience, remote coding capability, reliability, observability, and security.
  • Full C:\ and D:\ access is an explicit requirement for the owner's deployment. Open-source defaults and examples may use narrower roots, but must not redefine the owner's deployment requirement.
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 · 10 lines · 275 tokens per session scan A 059faf8a0444

Subscribe to this mod's changes

Chat2Agent AGENTS.md is an instructions file published in the GitHub repository xiaoxiao341/Chat2Agent (17 stars, last pushed 2mo ago), licensed MIT. It adds 275 tokens to every session, about $0.0011 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

Chat2Agent AGENTS.md compared with instructions from other repositories

Chat2Agent AGENTS.md next to 6 instructions from other repositories
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