fonline-tla: Instructions file for Codex

AGENTS.md

fonline-tla AGENTS.md is an instructions file for Codex, OpenCode from cvet/fonline-tla. It costs 1,976 tokens per session, scanned A, original, MIT.

Repository instructions for maintaining FOnline: The Life After, a multiplayer game built on a reusable game engine. They explain the split between engine code, gameplay scripts, native extensions, game content, configuration, and build files.

In plain words
What is it for?
Use them when changing AngelScript gameplay, dialogs, quests, AI, GUI behavior, native C++ extensions, game assets, configuration, or the CMake build setup.
Why use it?
They show an AI agent where changes belong and which parts should normally be treated as external. They also define the project’s build and verification workflow and preferred response language.

Instructions file for CodexOpenCode

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

This is cvet/fonline-tla's own configuration. It tells Codex and OpenCode how to work on fonline-tla 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 fonline-tla configures →

Reuse

Borrowing it

Nothing to install: this file belongs to cvet/fonline-tla. 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/cvet/fonline-tla/master/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/cvet/fonline-tla

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.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/cvet/fonline-tla/agents-md"><img src="https://agentmods.dev/badge/instructions/cvet/fonline-tla/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,976 This file is loaded in full into every session.
When invoked 1,976 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 $0.01976 $0.01976
Opus 5.5 $0.00790 $0.00790
Sonnet 5.5 $0.00395 $0.00395
Haiku 4.5 $0.00198 $0.00198

Measured 13d ago against content hash 165c925a8913, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

fonline-tla 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 13d 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 · 135 lines

How it starts

The opening of the file, as written. The whole thing — 135 lines — stays where its author put it; the contents beside it link to each section on GitHub.

FOnline: The Life After — Agent Instructions

Read this project guide fully, then the task's owning documents. Human entry: README.md; full index: Docs/README.md. .github/copilot-instructions.md points here; do not maintain competing instruction bodies.

Start and authority

  1. Confirm checkout, branch, requested outcome and dirty files. Inspect the project and Engine/ independently; preserve user and other-agent edits. Re-anchor from the plan, current source and diff after a handoff or compaction.
  2. Read owners, validators and callers before designing a change. Requirements establish intended behavior; source establishes current behavior. Historical logs, summaries and worker reports are evidence, not new action authority.
  3. Carry the authorized scope through implementation and verification. Resolve routine choices from source; ask for material missing requirements or actions outside scope. If a required source is unavailable, report it and wait before synthesizing conclusions.
  4. Before non-trivial implementation, write a plan in Docs/Plans/, including plans produced by workflow skills. Update its scope, steps, decisions, acceptance and actual verification results as work proceeds. Update affected documentation alongside the changes; do not defer plans or docs to the final handoff. Follow the working procedure.
  5. Put private task logs, screenshots, scripts, dumps, drafts and worker inputs in ignored Workspace/<task-id>/. Standard tool outputs keep their owning paths; permanent delegation history follows the governing launcher procedure. Maintained guides belong under Docs/; keep task reports out of the repository root.
  • No git add, commit, push, merge, destructive Git operation, publication or deployment without explicit action authority. Prepare reviewable local edits; “prepare for commit” does not mean create a commit. Past permissions do not authorize a new task. Never revert work you did not make.
  • Stay on the requested project branch/worktree. Engine-only branch/history instructions apply only to Engine. Normal Engine updates keep its master branch; do not detach or move the project branch incidentally.
  • Chat with the owner in Russian unless requested otherwise. General project/ agent docs and native C++ stay English; keep existing documents in their own language (Docs/ScriptStyle.md is Russian). Script comments and module headers are Russian; translate existing English comments when touching the module. Serialized metadata, IDs, text keys and identifiers stay English.
  • Do not read credentials for unrelated maintenance or copy secrets/raw private sessions into source, chat or reports. The base config's public development channel pair is for local use; production keys remain host-owned.

Read the full file on GitHub · 135 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. 13d ago Changed · -125 lines · -3,853 tokens per session 165c925a8913
  2. 25d ago Changed · -16 tokens per session 0f61775678c9
  3. 1mo ago Changed · +31 lines · +1,354 tokens per session da391cc3d7f0
  4. 2mo ago First seen · 229 lines · 4,491 tokens per session scan A 916d4b47a273

Subscribe to this mod's changes

fonline-tla AGENTS.md is an instructions file published in the GitHub repository cvet/fonline-tla (52 stars, last pushed 3d ago), licensed MIT. It adds 1,976 tokens to every session, about $0.0079 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

fonline-tla AGENTS.md compared with instructions from other repositories

fonline-tla AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
fonline-tla AGENTS.mdcvet/fonline-tlaInstructions file523d agoMITA1,976Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143kyesterdayMITA7,461Codex, 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