add

add is a skill for Claude Code from fullymiddleaged/Clawness. It costs 37 tokens per session (501 once invoked), scanned A, original, MIT.

A rule-writing tool for Clawness, a system that enforces coding practices. It turns a natural-language requirement into a YAML rule with conditions, severity, search terms, and examples.

In plain words
What is it for?
Use it to create a new rule describing a required or recommended coding practice, choose its domain and severity, and save it in the appropriate .clawness location.
Why use it?
It removes the need to design the rule format by hand. It also helps capture the code and framework terms that determine when a rule should apply.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the clawness plugin — 13 skills, 7 agents shipped together

Good fit Use it to create a new rule describing a required or recommended coding practice, choose its domain and severity, and save it in the appropriate .clawness location.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/fullymiddleaged/clawness/add
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 fullymiddleaged/Clawness --skill add
Clone the repo
git clone --depth 1 https://github.com/fullymiddleaged/Clawness

Made for: Claude Code.

Or install clawness, the plugin that ships this one along with the rest of its 13 skills, 7 agents.

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 add

README.md
[![agentmods](https://agentmods.dev/badge/skills/fullymiddleaged/clawness/add/github.svg)](https://agentmods.dev/skills/fullymiddleaged/clawness/add)
Your own site
<a href="https://agentmods.dev/skills/fullymiddleaged/clawness/add"><img src="https://agentmods.dev/badge/skills/fullymiddleaged/clawness/add/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 add

Your own site · 80×15
<a href="https://agentmods.dev/skills/fullymiddleaged/clawness/add"><img src="https://agentmods.dev/badge/skills/fullymiddleaged/clawness/add.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 501 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 $0.00037 $0.00501
Opus 5.5 $0.00015 $0.00200
Sonnet 5.5 $0.00007 $0.00100
Haiku 4.5 $0.00004 $0.00050

Measured 1mo ago against content hash e86f17d4e240, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

add 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.

skills/add/SKILL.md · 57 lines

What it actually says

Create a New Rule

Generate a Clawness rule from the user's description.

Process

  1. Understand the intent — The user describes a coding practice they want enforced. Parse their description for:

    • What domain this falls under (nextjs, react, python, etc.)
    • Whether it should be mandatory (always enforced) or ranked
    • The severity (error for "must do", warning for "should do", info for "consider")
  2. Generate the YAML — Create a properly formatted rule:

    id: DOMAIN-DESCRIPTIVE-NNN
    domain: detected_domain
    severity: error|warning|info
    tags: [relevant, search, keywords]
    triggers: [code, tokens, that, signal, relevance]
    when: Clear condition for when this rule applies.
    rule: >
      The actual instruction, written clearly and specifically.
    violation: "Concrete example of what NOT to do"
    correct: "Concrete example of what TO do"
    
  3. Tags and triggers are critical — These drive retrieval. Include:

    • The concepts involved (e.g., "caching", "auth", "state")
    • The code tokens someone would use (e.g., "useEffect", "fetch", "router")
    • The framework/library names (e.g., "nextjs", "prisma", "zod")
  4. Save the rule — Determine the right location:

    • If .clawness/rules/ exists in the project, save there (project-scoped)
    • Otherwise, save to the global rules directory
    • Ask the user to confirm before writing
  5. Test it — Run a test query to verify the rule would be retrieved for the kind of prompt it should match.

Example

User says: "Always use server actions for form mutations in Next.js"

→ Generates a rule with:

  • domain: nextjs
  • tags: [server-actions, forms, mutations, use-server]
  • triggers: [form, submit, action, mutation, create, update, delete]
  • Saves to the appropriate rules directory
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 · 57 lines · 37 tokens per session scan A e86f17d4e240

Subscribe to this mod's changes

add is a skill published in the GitHub repository fullymiddleaged/Clawness (5 stars, last pushed 13d ago), licensed MIT. It adds 37 tokens to every session and 501 once invoked, about $0.0001 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

Other skills, from other repositories

arrow-maintenance

Navigation and audit overlay for linked-intent development. Use when working with docs/arrows/ — orienting via index.yaml, auditing spec-to-code coherence, detecting reverse orphans and drift, splitting/merging/renaming/re-parenting segments. Dual-mode: ambient guidance when the overlay is present…

jszmajda/lid · 85 tokens

review-depth

Experimental declared review depth for linked-intent development. Use when a LID project's instruction file declares a review depth in prose (e.g. "Review depth - I review through LLD; below that, consolidate to one review") or the user asks to batch phase reviews, consolidate stops, or let go below a phase depth.…

jszmajda/lid · 93 tokens

bidirectional-differential

Audit coherence across an arrow of intent by running two parallel fresh Claude sessions — one reconstructs code from a single EARS, the other reconstructs the EARS from stripped code — then classifies the drift between them. Use when the user invokes /differential-audit, asks to audit EARS-to-code drift for a feature…

jszmajda/lid · 172 tokens

triage-aging-prs

Drive an aging pull-request backlog to zero. Inventories every open PR, finds the STRUCTURAL blockers first (a required check that can never run, a reviewer that never fires, chronically red CI), triages every unresolved review thread in parallel and VERIFIES each finding against the code before fixing it, then merges…

coalesce-labs/catalyst · 140 tokens

review-comments

Systematically pull, categorize, and address all PR review comments — code change requests, questions, and suggestions. This skill fetches comments via gh api, groups them by file, implements fixes, handles disagreements diplomatically, and pushes a single commit. You should not try to handle PR review feedback…

coalesce-labs/catalyst · 137 tokens

scan-reward-hacking

Scan TypeScript code for reward hacking patterns — shortcuts that make linters pass without actually fixing type safety. This skill has a comprehensive checklist of 8 forbidden patterns with severity tuning (libraries vs apps) that you cannot reliably check on your own. ALWAYS consult this skill when the user says…

coalesce-labs/catalyst · 158 tokens