DevRails-26 AGENTS.md

DevRails-26 AGENTS.md is an instructions file for Codex, OpenCode from nicelight/DevRails-26. It costs 2,914 tokens per session, scanned A, original, MIT.

Project-specific instructions for DevRails-26, a framework for agent-driven software development. It deploys skills, shared memory, workflows, protocols, and validators into other projects.

In plain words
What is it for?
Changing DevRails source, installers, runtime instructions, workflow contracts, validators, and the files delivered to target projects.
Why use it?
They help agents preserve the project's workflow rules, handoffs, status handling, and validation checks across the source and deployed files.

Instructions file for CodexOpenCode

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add instructions/nicelight/devrails-26/agents-md
Clone the repo
git clone --depth 1 https://github.com/nicelight/DevRails-26

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 DevRails-26 AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/nicelight/devrails-26/agents-md.svg)](https://agentmods.dev/instructions/nicelight/devrails-26/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/nicelight/devrails-26/agents-md"><img src="https://agentmods.dev/badge/instructions/nicelight/devrails-26/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 2,914 This file is loaded in full into every session.
When invoked 2,914 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.02914 $0.02914
Opus 5 $0.01457 $0.01457
Sonnet 5 $0.00583 $0.00583
Haiku 4.5 $0.00291 $0.00291

Measured 4d ago against content hash 89e36bc3bbee, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

DevRails-26 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 4d 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 · 242 lines

How it starts

The opening of the file, as written. The whole thing — 242 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Что является продуктом этого репозитория

DevRails — framework агентной разработки, а не обычное приложение и не набор независимых prompts.

Canonical source через installer разворачивается в целевой проект как runtime skills, Memory Bank, workflows, protocols и validators.

Изменения оцениваются по всей цепочке:

canonical source
  -> installer/generator
  -> deployed target files
  -> поведение runtime-агента
  -> workflow state, gates и handoffs

Наличие файла в source repo не означает, что он доступен runtime-агенту в target project.

Skills как executable workflow contracts

Runtime skills, shared workflows, protocol shapes и validators являются частями одного публичного workflow contract.

Без отдельного решения нельзя менять или терять:

  • inputs, outputs, statuses и verdicts;
  • lifecycle и status ownership;
  • blockers, stop conditions и resume routes;
  • required gates и handoffs;
  • task schema и registry semantics.

Leaf skill должен описывать собственный outcome и immediate handoff, а общие правила получать из доступного в target canonical reference.

Стиль runtime-инструкций

  • Пиши runtime-инструкции только для исполняющего агента. Перед сохранением сокращай или объединяй формулировки и удаляй текст, если это не меняет допустимое поведение агента и workflow contract.
  • Из однозначных contract-equivalent вариантов выбирай кратчайший. Не дублируй правила; rationale, пояснения и примеры оставляй только когда они нужны для однозначного исполнения.
  • Каждая инструкция должна защищать workflow contract, корректность, безопасность или совместимость.
  • Inputs, outputs, gates, blockers, validation и handoff формулируй нормативно.
  • В остальных случаях избегай повелительного тона: внутреннюю тактику и порядок действий оставляй на выбор агента.
  • Не превращай примеры, предпочтения и best practices в обязательные шаги.
  • Сокращение текста не должно менять statuses, ownership, stop conditions и resume routes.

Цель и тактика

  • В инструкциях, промптах и ответах фиксируй цель, ограничения и критерии результата.
  • Не предписывай тактику, шаги, порядок или инструменты без основания в корректности, безопасности, совместимости или workflow contract; оставляй их выбор агенту.

Read the full file on GitHub · 242 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. 4d ago First seen · 242 lines · 2,914 tokens per session scan A 89e36bc3bbee

Subscribe to this mod's changes

DevRails-26 AGENTS.md is an instructions file published in the GitHub repository nicelight/DevRails-26 (22 stars, last pushed 6d ago), licensed MIT. It adds 2,914 tokens to every session, about $0.0146 per session on Opus 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

Other instructions, from other repositories

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 6,785 tokens

spec-kit AGENTS.md

AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.

github/spec-kit · 7,104 tokens

codex AGENTS.md

AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.

openai/codex · 5,182 tokens

langchain AGENTS.md

AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.

langchain-ai/langchain · 4,345 tokens

vscode oss-third-party-notices.instructions.md

Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).

microsoft/vscode · 5,001 tokens

next.js AGENTS.md

Instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.

vercel/next.js · 7,296 tokens