dfhack-mcp: Instructions file for Codex

AGENTS.md

dfhack-mcp AGENTS.md is an instructions file for Codex, OpenCode from alexanderolvera/dfhack-mcp. It costs 1,215 tokens per session, scanned A, original, ISC.

A set of instructions for AI coding agents working on the dfhack-mcp code repository. It explains how to keep code and comments useful, avoid duplicated information, and review changes consistently.

In plain words
What is it for?
Reviewing changes in dfhack-mcp, deciding whether new helper code is needed, and maintaining comment and documentation quality.
Why use it?
It gives the agent project-specific guidance that general coding instructions do not cover. This helps keep reviews focused and reduces unnecessary code or comments.

Instructions file for CodexOpenCode

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

This is alexanderolvera/dfhack-mcp's own configuration. It tells Codex and OpenCode how to work on dfhack-mcp 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 dfhack-mcp configures →

Reuse

Borrowing it

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

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 dfhack-mcp AGENTS.md

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

Your own site · 80×15
<a href="https://agentmods.dev/instructions/alexanderolvera/dfhack-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/alexanderolvera/dfhack-mcp/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,215 This file is loaded in full into every session.
When invoked 1,215 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 $0.01215 $0.01215
Opus 5.5 $0.00486 $0.00486
Sonnet 5.5 $0.00243 $0.00243
Haiku 4.5 $0.00121 $0.00121

Measured 1mo ago against content hash 92cb86e7c0a6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

dfhack-mcp 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 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.

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 · 102 lines

How it starts

The opening of the file, as written. The whole thing — 102 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Guidance for AI coding agents working in this repo, beyond what's in CONTRIBUTING.md. CONTRIBUTING.md covers the tiered verify harness and the tool-adding checklist; this file covers code/comment hygiene — things to actively look for on every pass through this codebase, not just when asked.

Does this snippet earn its keep?

Before adding — or when passing over — a derived/curated field, function, or script, ask whether it's actually adding information, or just re-packaging something already available elsewhere in the same payload/module with a bit of prose wrapped around it. A second, hand-maintained summary of a fact is a second place for that fact to drift out of sync with the source (see the "Facts, not advice" doctrine in CONTRIBUTING.md — the same reasoning applies to internal duplication, not just advice-vs-fact).

Precedent: identify's tactics[] field (src/tools/identify/tactics.ts, removed) derived a curated {trait, note} list — trapavoid, flier, fire, building_destroyer, webber, ranged — from the creature dossier's own flags[]/interactions[], which the same response already returns. It duplicated data the caller could already see, cost a second source of truth (its ranged derivation had its own bug — issue #66 — before the field was cut entirely), and its removal deleted real code with no loss of information. That's the shape to look for: a field/helper that mostly restates data sitting one hop away in the same response.

Also watch for orphaned scripts: scripts/verify-identify.mjs (removed) had a stale import path from before identify became a directory, and wasn't referenced by any npm script or doc — it had already silently stopped working. If a script/module isn't reachable from package.json, a doc, or another module, don't assume it's still doing anything.

Comment hygiene

The target is zero comment blocks. Code should be legible enough — through naming, structure, and small functions — that it doesn't need prose alongside it to be understood. A comment is a sign the code didn't quite say what it means; prefer fixing that over documenting around it.

Read the full file on GitHub · 102 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 First seen · 102 lines · 1,215 tokens per session scan A 92cb86e7c0a6

Subscribe to this mod's changes

dfhack-mcp AGENTS.md is an instructions file published in the GitHub repository alexanderolvera/dfhack-mcp (2 stars, last pushed 2mo ago), licensed ISC. It adds 1,215 tokens to every session, about $0.0049 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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