dotdog: Instructions file for Codex

AGENTS.md

dotdog AGENTS.md is an instructions file for Codex, OpenCode from specdog/dotdog. It costs 526 tokens per session, scanned A, original, MIT.

A project guide for the dotdog command-line tool, explaining how agents should query its machine-readable specification graph and verify code changes.

In plain words
What is it for?
Use it when exploring dotdog entities and relationships, changing dotdog source, updating specifications, or running targeted and full tests.
Why use it?
It prevents agents from reading or editing the human-format specification directly and keeps changes tied to the project’s source of truth.

Instructions file for CodexOpenCode

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

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

Reuse

Borrowing it

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

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 dotdog AGENTS.md

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

Your own site · 80×15
<a href="https://agentmods.dev/instructions/specdog/dotdog/agents-md"><img src="https://agentmods.dev/badge/instructions/specdog/dotdog/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 526 This file is loaded in full into every session.
When invoked 526 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 $0.00526 $0.00526
Opus 5.5 $0.00210 $0.00210
Sonnet 5.5 $0.00105 $0.00105
Haiku 4.5 $0.00053 $0.00053

Measured 6d ago against content hash fd71020d655d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

dotdog 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 6d 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 · 50 lines

How it starts

The opening of the file, as written. The whole thing — 50 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — dotdog

This repo is the dotdog CLI tool. For spec graphs, use npx dotdog serve (MCP) or dotdog compile.

Quick Start (read this first)

NEVER read .dog files directly. Query the .dag via MCP. The .dog is human format. The .dag is agent format.

  • .md: read for context (README, docs, blog) but NOT for entity/relationship/project structure
  • .dog: NEVER read. Human writes it. Agent never touches it.
  • .dag: ALWAYS query via MCP. This is your source of truth for project structure.
  • If .dag doesn't have it: report "unverified" — never fall back to .dog

MCP: npx dotdog serve (11 tools: getEntity, traverse, path, search, schema, summary, listProjects, workspace.list, context, impact, infraVerify)

Workflow (lean):

  • 1 issue → 1 PR → 1 merge
  • spec/.dag first, code second
  • no unrelated edits
  • verify with targeted test, then full bun test
  • update docs/spec in the same PR if behavior changes
  • never merge without explicit user ask

Token efficiency:

  • keep truth in .dag/spec, not chat
  • preserve IDs, file paths, and test results verbatim
  • compress chatter/logs, not constraints or state
  • prefer short status: changed / verified / next

Public site/docs: keep README, docs, and specdog.github.io in sync when adding commands, docs, blog posts, or discovery pages.

Commands (when modifying dotdog source)

dotdog validate     → check completeness (run before commits)
dotdog doctor       → baseline health check (run before commits)
dotdog analyze      → gap detection + contradiction checking
dotdog compile      → rebuild .dag from .dog files
dotdog index        → build search index
dotdog search "q"   → lexical search across indexed sections
dotdog status       → read-only graph freshness (not correctness)

Key Rules

  1. Use conventional commits (feat:, fix:, docs:, chore:)
  2. Never commit dist/
  3. Keep the first unreleased 1.0 candidate at 1.0.0; bump versions per release, not per development commit
  4. Dogfood: test against npx dotdog@latest validate before shipping

Read the full file on GitHub · 50 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. 6d ago Changed · +17 tokens per session fd71020d655d
  2. 2mo ago First seen · 50 lines · 509 tokens per session scan A 61322e71c825

Subscribe to this mod's changes

dotdog AGENTS.md is an instructions file published in the GitHub repository specdog/dotdog (7 stars, last pushed 6d ago), licensed MIT. It adds 526 tokens to every session, about $0.0021 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

dotdog AGENTS.md compared with instructions from other repositories

dotdog AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
dotdog AGENTS.mdspecdog/dotdogInstructions file76d agoMITA526Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143kyesterdayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149ktodayMITA4,680Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file275k2d agoMITA4,313Codex, OpenCode