mcp-read-only-argocd: Instructions file for Codex

AGENTS.md

mcp-read-only-argocd AGENTS.md is an instructions file for Codex, OpenCode from lukleh/mcp-read-only-argocd. It costs 2,322 tokens per session, scanned A, original, MIT.

A repository guide for AI coding assistants working on a read-only Argo CD server. It explains the folder structure, coding rules, configuration, tests, and development commands.

In plain words
What is it for?
Use it when implementing, reviewing, testing, or troubleshooting changes to the server and its Argo CD connections.
Why use it?
It helps an assistant find the right files and follow the project's rules instead of guessing how the code is organized.

Instructions file for CodexOpenCode

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

This is lukleh/mcp-read-only-argocd's own configuration. It tells Codex and OpenCode how to work on mcp-read-only-argocd 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-read-only-argocd configures →

Reuse

Borrowing it

Nothing to install: this file belongs to lukleh/mcp-read-only-argocd. 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/lukleh/mcp-read-only-argocd/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/lukleh/mcp-read-only-argocd

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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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.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/lukleh/mcp-read-only-argocd/agents-md"><img src="https://agentmods.dev/badge/instructions/lukleh/mcp-read-only-argocd/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 2,322 This file is loaded in full into every session.
When invoked 2,322 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 $0.02322 $0.02322
Opus 5.5 $0.00929 $0.00929
Sonnet 5.5 $0.00464 $0.00464
Haiku 4.5 $0.00232 $0.00232

Measured 28d ago against content hash f317819b297f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp-read-only-argocd 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 28d 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 · 145 lines

How it starts

The opening of the file, as written. The whole thing — 145 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Repository Guidelines

Project Overview

MCP Read-Only Argo CD Server provides read-only access to Argo CD instances via the Model Context Protocol (MCP). It uses browser session cookie authentication and supports multiple Argo CD connections simultaneously.

Project Structure & Module Organization

src/mcp_read_only_argocd/server.py is the MCP entry point and wires the domain tool modules under src/mcp_read_only_argocd/tools/. Connection parsing and token resolution live in config.py; HTTP calls and cookie rotation live in argocd_connector.py; the Chrome cookie fallback lives in chrome_session.py; shared error types are in exceptions.py; runtime path resolution is in runtime_paths.py; and validation helpers are in validation.py. Tests live in tests/, and smoke_test.py is the checkout-level connectivity probe for configured Argo CD instances.

Build, Test, and Development Commands

  • uv sync --extra dev installs runtime and development dependencies.
  • uv run python -m mcp_read_only_argocd.server runs the server manually for testing.
  • uv run mcp-read-only-argocd --print-paths shows the resolved config, state, and cache locations.
  • uv run mcp-read-only-argocd --write-sample-config writes the default connections.yaml; add --overwrite only when you intend to replace it.
  • uv run pytest -q runs the full test suite.
  • uv run pytest tests/test_server.py -q runs a focused test module while iterating.
  • uv run python smoke_test.py exercises every configured connection; add --connection staging to scope it to one.
  • uv run ruff check src tests smoke_test.py runs linting.
  • uv run ty check runs the type checker on src/.

Architecture

Core Components

src/mcp_read_only_argocd/server.py - MCP server entry point

  • ReadOnlyArgoCDServer class manages connections and orchestrates tool registration
  • Calls domain-specific registration functions from src/mcp_read_only_argocd/tools/
  • Error handling: every tool carries @surface_tool_errors below @mcp.tool(), so anticipated failures reach the caller with their message (see "Error Handling Pattern")

Read the full file on GitHub · 145 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. 28d ago Changed · +6 lines · +171 tokens per session f317819b297f
  2. 1mo ago Changed · +112 lines · +1,551 tokens per session 0c70252a0e2d
  3. 1mo ago First seen · 27 lines · 600 tokens per session scan A 397a99261739

Subscribe to this mod's changes

mcp-read-only-argocd AGENTS.md is an instructions file published in the GitHub repository lukleh/mcp-read-only-argocd (0 stars, last pushed 2d ago), licensed MIT. It adds 2,322 tokens to every session, about $0.0093 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.

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