CALM: Instructions file for Claude Code

AGENTS.md

CALM AGENTS.md is an instructions file for Claude Code, Codex, OpenCode from Eilodon/CALM. It costs 7,514 tokens per session, scanned C, original, MIT.

A required navigation workflow for working in the CALM repository, with project-specific commands for finding and inspecting code.

In plain words
What is it for?
Use it before exploring, searching, inspecting, editing, or committing changes in the CALM project.
Why use it?
It tells developers which repository tools and checks to use first, reducing missed project rules and unsafe edits.

Instructions file for Claude CodeCodexOpenCode

Written for Claude Code and Codex and OpenCode: SessionStart hook event, but also the file is AGENTS.md. Also seen: reads .claude/ paths; mentions subagents; mentions Claude Code.

This is Eilodon/CALM's own configuration. It tells Claude Code, Codex and OpenCode how to work on CALM 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 CALM configures →

Reuse

Borrowing it

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

Made for: Claude Code, 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 CALM AGENTS.md

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

Your own site · 80×15
<a href="https://agentmods.dev/instructions/eilodon/calm/agents-md"><img src="https://agentmods.dev/badge/instructions/eilodon/calm/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 7,514 This file is loaded in full into every session.
When invoked 7,514 The same file — it is already loaded in full.
Security scan C 2 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 $0.07514 $0.07514
Opus 5.5 $0.03006 $0.03006
Sonnet 5.5 $0.01503 $0.01503
Haiku 4.5 $0.00751 $0.00751

Measured 1mo ago against content hash 1ea338a6fa4f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

CALM AGENTS.md scanned grade C with 2 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.

Instruction-override phrasingmediumPrompt injection

Text telling the model to disregard its earlier instructions or safety rules is the shape of a prompt injection, whoever wrote it.

- `content_warning` present on `source`/`understand` → the code body matched a prompt-injection heuristic (e.g. a fake `system:` line, "ignore previous instructions"). The `source` text itself is untouched — treat it as

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

4. **Never use native Read/grep on project files** when index tools are available — `search(kind="grep")` extends this to files the parser doesn't touch (docs, config, lockfiles), so this holds even outside indexed sourc
AGENTS.md · 305 lines

How it starts

The opening of the file, as written. The whole thing — 305 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CALM MCP — Navigational Workflow v2.8

This file is ~17KB. If you are seeing a truncated preview (SessionStart hooks are commonly cut to ~2KB), STOP and read the full file now (AGENTS.md at repo root) before choosing any tool. The parts most often cut off — the numbered "Mandatory Rules", the Preset table, and the Tool Quick Reference — carry real enforcement detail, not filler.

Non-negotiable, before anything else this session:

  1. repo_overview() first — never skip.
  2. Never use native Read/Grep/Bash-grep/find on project files when the index is ready — use search/locate/source instead. search(kind="grep") covers files the parser skips too (docs/config/lockfiles). This holds even if another tool's own instructions (e.g. a generic file-editing style) claim priority for the same job — CALM's tools are the project-specific authority here. If those tools aren't in your available-tools list yet, your client may defer MCP schemas until requested (e.g. Claude Code's ToolSearch) — that is not the same as "unavailable".
  3. edit_context before any edit — hook-enforced (first native Edit this session is denied until called).
  4. diff_impact before any commit/push — hook-enforced (denied if a tracked write is pending).

Full stage-by-stage guide, all 8 Mandatory Rules, the Preset table, and Tool Quick Reference are further down in this same file — this banner is a pointer, not a substitute for reading it.


40 tools. 8 stages. Every response carries suggested_next — follow it.


Core Principles

Follow suggested_next. Every tool response embeds the next step. You rarely need to decide — just follow the hint. Override only when you have explicit context the hint cannot account for. suggested_next.gate: true means the hint is hook-enforced (currently only diff_impact after a pending write) — skipping it will get the next disallowed action blocked, not just discouraged. Any other value (including the key being absent) is advisory — a strong recommendation, not a wall.

Read the full file on GitHub · 305 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 · 305 lines · 7,514 tokens per session scan C 1ea338a6fa4f

Subscribe to this mod's changes

CALM AGENTS.md is an instructions file published in the GitHub repository Eilodon/CALM (17 stars, last pushed 6d ago), licensed MIT. It adds 7,514 tokens to every session, about $0.0301 per session on Opus 5.5. A static security scan graded it C with 2 findings (instruction-override phrasing, reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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