hmem-new-rule

hmem-new-rule is a skill for Claude Code, Codex from Bumblebiber/hmem. It costs 95 tokens per session (953 once invoked), scanned A, original, MIT.

A rule-management guide that decides whether a new rule applies to every project or only to the current project, then places it accordingly.

In plain words
What is it for?
Adding rules, asking about their intended scope, and choosing the correct location based on the rule's wording and context.
Why use it?
It prevents project-specific instructions from affecting unrelated projects and prevents shared instructions from being hidden in one project.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Adding rules, asking about their intended scope, and choosing the correct location based on the rule's wording and context.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/bumblebiber/hmem/hmem-new-rule
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.

Any agent
npx skills add Bumblebiber/hmem --skill hmem-new-rule
Clone the repo
git clone --depth 1 https://github.com/Bumblebiber/hmem

Made for: Claude Code, Codex.

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 hmem-new-rule

README.md
[![agentmods](https://agentmods.dev/badge/skills/bumblebiber/hmem/hmem-new-rule/github.svg)](https://agentmods.dev/skills/bumblebiber/hmem/hmem-new-rule)
Your own site
<a href="https://agentmods.dev/skills/bumblebiber/hmem/hmem-new-rule"><img src="https://agentmods.dev/badge/skills/bumblebiber/hmem/hmem-new-rule/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 hmem-new-rule

Your own site · 80×15
<a href="https://agentmods.dev/skills/bumblebiber/hmem/hmem-new-rule"><img src="https://agentmods.dev/badge/skills/bumblebiber/hmem/hmem-new-rule.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 953 The whole file, excluding the scripts and references it only reads on demand.
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 $0.00095 $0.00953
Opus 5 $0.00048 $0.00477
Sonnet 5 $0.00019 $0.00191
Haiku 4.5 $0.00010 $0.00095

Measured 9d ago against content hash 28b37f1fd429, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

hmem-new-rule 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 9d 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.

skills/hmem-new-rule/SKILL.md · 94 lines

How it starts

The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/hmem-new-rule — Place a Rule in the Right Place

R-prefix entries are surfaced in the session-start Rules listing for every session. A project-specific rule written as an R-entry leaks into other projects' context. A cross-project rule buried inside one project never surfaces when working on another. Same content, very different consequence — scope decides.

Step 1: Determine scope BEFORE writing

Ask the user, unless they already said:

"Gilt die Regel projektübergreifend (alle Projekte) oder nur für das aktive Projekt?"

Suggest a default from these heuristics:

Signal Likely scope
Rule names a specific repo path, file, CLI tool, schema field, project's tech stack Project-specific
Rule mentions hmem code, propagation to end users, project structure Project-specific (P0048-specific)
Rule is about agent behavior, communication style, write protocols, MCP interaction Cross-project (R)
Rule references infrastructure used in many projects (e.g. Strato server, npm publish in general) Cross-project (R)
Rule applies only when one specific project is active Project-specific

When in doubt, ask. Wrong scope is the most common failure mode of this workflow.

Step 2A: Cross-project rule → R-entry

write_memory(
  prefix="R",
  title="<short imperative title>",
  body="<full rule text — what / why / examples / counter-examples>",
  tags=["#hmem", "#<topic-tag>"],
  links=["<active-project-id-if-relevant>"],
  pinned=<true only if it MUST surface in session-start every session>
)
  • links may include a project ID for context, but the rule still applies broadly.
  • pinned=true only when the rule belongs in the always-visible Rules block at session start (after the v6.x hook trim, only pinned/favorite R-entries surface). Use sparingly — pinning everything defeats the purpose.

Step 2B: Project-specific rule → subnode under Rules

First check whether the active project has a Rules section:

Read the full file on GitHub · 94 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. 9d ago First seen · 94 lines · 95 tokens per session scan A 28b37f1fd429

Subscribe to this mod's changes

hmem-new-rule is a skill published in the GitHub repository Bumblebiber/hmem (23 stars, last pushed 1mo ago), licensed MIT. It adds 95 tokens to every session and 953 once invoked, about $0.0005 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.

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