agentmods.dev

agys: Instructions file for Codex

AGENTS.md

agys AGENTS.md is an instructions file for Codex, OpenCode from quaywin/agys. It costs 589 tokens per session, scanned B, original, MIT.

Project-specific instructions for developing the agys Go application, including safe binary handling, approved build and test commands, and architecture guidance.

In plain words
What is it for?
Use them when building, testing, installing, or changing the agys codebase.
Why use it?
They help an agent follow the project's rules and avoid damaging a live executable during development.

Instructions file for CodexOpenCode

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

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

Not installable: its command points at a path on the author’s own machine, so it runs nowhere else. The line is /Users/quaywin/.local/bin/agys.

not rated 12repo +1 changed 1mo ago B scan 589 tokens original MIT
View source ↗ quaywin/agys
Reuse

Borrowing it

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

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 agys AGENTS.md

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

Your own site · 80×15
<a href="https://agentmods.dev/instructions/quaywin/agys/agents-md"><img src="https://agentmods.dev/badge/instructions/quaywin/agys/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 589 This file is loaded in full into every session.
When invoked 589 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 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 $0.00589 $0.00589
Opus 5.5 $0.00236 $0.00236
Sonnet 5.5 $0.00118 $0.00118
Haiku 4.5 $0.00059 $0.00059

Measured 1mo ago against content hash 0f1daf586570, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

agys 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.

Strips warnings and disclaimersmediumAnti-refusal

Omitting safety caveats hides risk from the user and is a common jailbreak preamble.

- Keep `go vet ./...` clean without warnings.
Origin

Copies of this mod

1 near-identical copy found in the catalogue:

AGENTS.md · 44 lines

How it starts

The opening of the file, as written. The whole thing — 44 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — Development Guidelines for agys

⚠️ Critical Binary Deployment Rule

[!CAUTION] NEVER copy, build, overwrite, or delete the binary at /Users/quaywin/.local/bin/agys directly during agent tasks. (e.g. cp ... /Users/quaywin/.local/bin/agys, go build -o /Users/quaywin/.local/bin/agys, rm /Users/quaywin/.local/bin/agys).

Reason: Overwriting a live executable binary on macOS while active terminal panes, background watchers, or Herdr hooks are running will corrupt running process mappings and trigger an instant kernel SIGKILL ([1] <PID> killed agys).

✅ Allowed Build & Test Procedures

  1. Local Build & Test: 
    go build ./...
go test -v ./...
  2. Local Binary in Repository: 
    go build -o ./bin/agys .
  3. Go Install (Standard): 
    go install .
    (Installs safely to $GOPATH/bin/agys without touching the system path).

🛠️ Project Architecture & Best Practices

  • Language: 100% Pure Go (Zero Python / pip / asdf / shims dependency).
  • Herdr Integration:
    • cmd/herdr_hook.go: Cobra subcommand agys herdr-hook [session|quota].
    • pkg/profile/herdr.go: Lifecycle hook handler, socket RPC, compact sidebar badge (FormatModelAbbreviation), and Window Title (Conversation Title).
    • pkg/profile/quota.go: GetProfileFullQuotaDetailsForModel with token-based dynamic matching and 3-tier fallback.
  • Model Resolution Order: Explicit -m/--model arg -> Live prompt transcript (USER_SETTINGS_CHANGE) -> .active_model cache -> settings.json -> default Gemini.
  • Terminal Environment & DA2 Probe Prevention:
    • Always use pkg/profile.SanitizeAgyEnv when launching agy subcommands or background queries (exec.Command("agy", ...)).
    • Strips SSH_CLIENT, SSH_CONNECTION, and SSH_TTY and guarantees TERM_PROGRAM presence to prevent agy's uncoordinated Apple Terminal DA2 probe (\x1b[>c) from leaking phantom escape characters (0;0c[>1;0;0c) into user PTY input.
  • Quality Assurance:
    • Always run go test ./... and ensure zero test failures before completing tasks.
    • Keep go vet ./... clean without warnings.

Read the full file on GitHub · 44 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. 1mo ago Changed · +3 lines · +118 tokens per session 0f1daf586570
  2. 1mo ago Changed · -5 tokens per session 9bf21cdc962b
  3. 2mo ago First seen · 41 lines · 476 tokens per session scan B 3ebf895b4a5d

Subscribe to this mod's changes

agys AGENTS.md is an instructions file published in the GitHub repository quaywin/agys (12 stars, last pushed 1mo ago), licensed MIT. It adds 589 tokens to every session, about $0.0024 per session on Opus 5.5. A static security scan graded it B with 1 finding (strips warnings and disclaimers). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

GoLanguagesMulti-AgentPlanningai-agentsantigravityclicontext-windowherdr-plugin
Related

agys AGENTS.md compared with instructions from other repositories

agys AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
agys AGENTS.mdquaywin/agysInstructions file121mo agoMITB589Codex, 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