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.
npx skills add cosmicstack-labs/mercury-agent-skills --skill habit-formationgit clone --depth 1 https://github.com/cosmicstack-labs/mercury-agent-skillsWrote 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.
[](https://agentmods.dev/skills/cosmicstack-labs/mercury-agent-skills/habit-formation)<a href="https://agentmods.dev/skills/cosmicstack-labs/mercury-agent-skills/habit-formation"><img src="https://agentmods.dev/badge/skills/cosmicstack-labs/mercury-agent-skills/habit-formation/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.
<a href="https://agentmods.dev/skills/cosmicstack-labs/mercury-agent-skills/habit-formation"><img src="https://agentmods.dev/badge/skills/cosmicstack-labs/mercury-agent-skills/habit-formation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00023 | $0.00553 |
| Opus 5.5 | $0.00009 | $0.00221 |
| Sonnet 5.5 | $0.00005 | $0.00111 |
| Haiku 4.5 | $0.00002 | $0.00055 |
Grade A, and why
habit-formation 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.
What it actually says
Habit Formation
Build lasting habits using evidence-based behavior change techniques.
The Habit Loop
Cue → Craving → Response → Reward
Make or Break by Changing Each Element
| Element | Make a Habit Stick | Break a Bad Habit |
|---|---|---|
| Cue | Make it obvious | Make it invisible |
| Craving | Make it attractive | Make it unattractive |
| Response | Make it easy | Make it difficult |
| Reward | Make it satisfying | Make it unsatisfying |
Implementation Strategies
Habit Stacking
"After [current habit], I will [new habit]."
Examples:
- After I pour my morning coffee, I will write 3 things I'm grateful for.
- After I brush my teeth at night, I will lay out my workout clothes.
- After I sit down at my desk, I will open my task list.
Two-Minute Rule
New habits should take <2 minutes to start:
- "Run 3 miles" → "Put on running shoes"
- "Write 500 words" → "Open my writing app"
- "Meditate 10 min" → "Sit on my meditation cushion"
Environment Design
- Want to read more? Put a book on your pillow
- Want to eat healthy? Put fruit on the counter, junk in the back
- Want to exercise? Sleep in your workout clothes
- Want to stop checking phone? Keep it in another room
Tracking & Accountability
| Method | How | Why It Works |
|---|---|---|
| Habit tracker | Check off each day | Visual progress, streak motivation |
| Accountability partner | Daily check-in | Social commitment, external consistency |
| Public commitment | Share your goal | Social pressure, identity reinforcement |
| Contract | Penalty for missing | Loss aversion is powerful |
When It Gets Hard
- Don't miss twice: One slip is a mistake, two is a new pattern
- Never skip two days in a row: The streak resets but identity stays
- Reduce scope: If 10 min is hard, do 2 min. Show up, that's the win.
- Focus on identity: "I'm a runner" beats "I need to run"
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.
- 1mo ago First seen · 66 lines · 23 tokens per session scan A 988542026be1
habit-formation is a skill published in the GitHub repository cosmicstack-labs/mercury-agent-skills (486 stars, last pushed 2mo ago), licensed MIT. It adds 23 tokens to every session and 553 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 2026-09-03.
Other skills, from other repositories
scaffold-exercises
A directory scaffold for course exercises, with sections, exercise folders, and optional problem, solution, or explanation versions. It creates the required Markdown files and checks the result with the repository's linter.
explorer-interface-brief
Use when asked to design the interface for an interactive 3D explorer, plan a UI for exploring a 3D model of a topic, or write an image-model prompt for a 3D learning app mock-up. Produces, from a topic, the UI design brief (audience, layout, panels, interactions, label style, colour palette, accessibility) and an…
explorer-pipeline
Use when asked to make an interactive 3D explorer of a topic from start to finish, go from a topic to a clickable 3D learning page, or run the whole 3D explorer process. Produces a staged run of explorer-interface-brief, model-prompt-pack and explorer-viewer-builder in order for one topic, with the hand-offs between…
model-prompt-pack
Use when asked to write prompts for image-to-3D or text-to-3D tools, generate 3D models of a topic's parts, plan the assets for a 3D explorer, or build a labelled parts list with sources. Produces prompts for image-to-3D tools, one per object, plus a parts list for labelling in which every label names a trusted…
teach
A teaching-workspace guide for creating lessons, reference sheets, learning records, and resource notes around a topic the user wants to learn.
financial-statement-explainer
Explain a financial statement (P&L, balance sheet, or cash flow) in plain English. Use when asked to explain a P&L / income statement, a balance sheet, a cash flow statement, or to make financials understandable to a non-finance reader. Produces a plain-language walkthrough — what each section means, the line items…