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Define authoritative runtime product truth across actors and views.
Install Lamina Product Behavior
$ npx skills add aryaniyaps/lamina --skill lamina-product-behavior -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install aryaniyaps/lamina lamina-product-behavior --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/aryaniyaps/lamina.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/lamina-product-behavior .claude/skills/lamina-product-behavior && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "lamina-product-behavior" agent skill from https://github.com/aryaniyaps/lamina/tree/main/skills/lamina-product-behavior into .claude/skills/lamina-product-behavior/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lamina-product-behavior", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/aryaniyaps/lamina/tree/main/skills/lamina-product-behaviorType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add aryaniyaps/lamina --skill lamina-product-behavior -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install aryaniyaps/lamina lamina-product-behavior --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aryaniyaps/lamina.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/lamina-product-behavior .agents/skills/lamina-product-behavior && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "lamina-product-behavior" agent skill from https://github.com/aryaniyaps/lamina/tree/main/skills/lamina-product-behavior into .agents/skills/lamina-product-behavior/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lamina-product-behavior", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aryaniyaps/lamina --skill lamina-product-behavior -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install aryaniyaps/lamina lamina-product-behavior --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aryaniyaps/lamina.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/lamina-product-behavior .cursor/skills/lamina-product-behavior && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "lamina-product-behavior" agent skill from https://github.com/aryaniyaps/lamina/tree/main/skills/lamina-product-behavior into .cursor/skills/lamina-product-behavior/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lamina-product-behavior", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/aryaniyaps/lamina.git --path skills/lamina-product-behavior--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add aryaniyaps/lamina --skill lamina-product-behavior -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install aryaniyaps/lamina lamina-product-behavior --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aryaniyaps/lamina.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/lamina-product-behavior .gemini/skills/lamina-product-behavior && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "lamina-product-behavior" agent skill from https://github.com/aryaniyaps/lamina/tree/main/skills/lamina-product-behavior into .gemini/skills/lamina-product-behavior/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lamina-product-behavior", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install aryaniyaps/lamina lamina-product-behaviorInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add aryaniyaps/lamina --skill lamina-product-behavior -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/aryaniyaps/lamina.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/lamina-product-behavior .github/skills/lamina-product-behavior && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "lamina-product-behavior" agent skill from https://github.com/aryaniyaps/lamina/tree/main/skills/lamina-product-behavior into .github/skills/lamina-product-behavior/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lamina-product-behavior", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aryaniyaps/lamina --skill lamina-product-behavior -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install aryaniyaps/lamina lamina-product-behavior --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aryaniyaps/lamina.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/lamina-product-behavior .opencode/skills/lamina-product-behavior && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "lamina-product-behavior" agent skill from https://github.com/aryaniyaps/lamina/tree/main/skills/lamina-product-behavior into .opencode/skills/lamina-product-behavior/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lamina-product-behavior", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
lamina-product-behavior- GitHub stars
- 116
- Token cost
- ~775 tokens
- SKILL.md length
- 294 words
- Files
- 11 (incl. references)
- Skills in repo
- 10
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Define authoritative runtime product truth across actors and views.
- Works in 3 steps: Match the request's primary… → Open that linked reference before… → Start the response with Using…
- Modeling domain behavior
- SKILL.md covers Reference-loading protocol, Topic index and Working rule
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Lamina Product Behavior is an agent skill from aryaniyaps/lamina. Define authoritative runtime product truth across actors and views. Use when modeling domain behavior, setting product density, specifying side effects, protecting invariants, choosing consistency guarantees, handling retries or concurrent actions, defining time semantics and prerequisites, drawing ownership boundaries, or keeping views coherent. Use lamina-systems for causal loops and change over time, and lamina-ux for interaction expression.
Its SKILL.md is about 780 tokens, which your agent loads only when the skill is triggered. The skill folder holds 11 other files, including reference files (for example `references/consistency-guarantees.md`, `references/dependencies.md` and `references/idempotency-concurrency.md`).
It sits in Frontend & Design. The repository describes itself as: Headless product design for AI coding agents, backed by a transactional product graph | Design how it works, verify what you ship. The licence is Apache-2.0.
When your agent uses it
- Modeling domain behavior
- Setting product density
- Specifying side effects
- Protecting invariants
Example prompts
- “/lamina-product-behavior”
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- Match the request's primary runtime-truth decision to one row below.
- Open that linked reference before answering. Add another only when a second
- Start the response with Using lamina-product-behavior: so
What it can do on your machine
Read from SKILL.md and the folder at commit af269ef. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Lamina Product Behavior loads about 775 tokens when it runs, and up to ~6.2k if it reads all its reference files. Until then it costs about 118 tokens; SKILL.md has 294 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from aryaniyaps/lamina at commit af269ef, republished under its Apache-2.0 licence (© aryaniyaps). 294 words, ~775 tokens.
Download SKILL.mdSave it as
.claude/skills/lamina-product-behavior/SKILL.md (or your agent's skills folder). This skill also uses 10 other files; get the full folder from GitHub.- name
- lamina-product-behavior
- description
- Define authoritative runtime product truth across actors and views. Use when modeling domain behavior, setting product density, specifying side effects, protecting invariants, choosing consistency guarantees, handling retries or concurrent actions, defining time semantics and prerequisites, drawing ownership boundaries, or keeping views coherent. Use lamina-systems for causal loops and change over time, and lamina-ux for interaction expression.
Lamina Product Behavior
Reference-loading protocol
- Match the request's primary runtime-truth decision to one row below.
- Open that linked reference before answering. Add another only when a second decision materially changes the answer; do not preload the directory.
- Start the response with
Using lamina-product-behavior: <topic path(s)>so the selected behavior lens is auditable.
Topic index
| Runtime signal | Read | Adds |
|---|---|---|
| Need the represented domain model to match how actors understand the task | Product Behavior | entities, permissions, workflows, surfaces, and illegal states |
| Need to choose how much power or complexity each actor sees | Product Density | actor- and surface-specific complexity budgets |
| One mutation must update, notify, invalidate, audit, or retry elsewhere | Side Effects | primary effect, downstream effects, delivery lifecycle, and failure recovery |
| Need a rule that must hold in every valid state | Invariants | explicit predicates and violation probes |
| Views may lag or disagree after a state change | Consistency Guarantees | strong, eventual, and read-your-writes product promises |
| An operation may repeat, race, conflict, or arrive after state changed | Idempotency and Concurrency | duplicate safety, conflict policy, and fencing |
| Behavior depends on zones, dates, recurrence, duration, deadline, or correction | Time Semantics | explicit temporal meaning and boundary behavior |
| A workflow requires prior setup, ownership, state, or another workflow | Dependencies | prerequisite edges and unmet behavior |
| Need to decide which domain owns a rule or what data crosses a boundary | Modularity Boundaries | information hiding and cohesive ownership |
| Several roles or surfaces must agree on the same entity and lifecycle | Multi-View Integrity | handoffs, visibility, and cross-view truth |
Working rule
Use the smallest sufficient reference set. Common pairs are invariants + idempotency for consequential writes, consistency + multi-view integrity for role-based products, and side effects + time semantics for scheduled delivery. Keep behavior in product language; do not prescribe implementation machinery unless the user asks for it.
© aryaniyaps, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 10 other files (references) in skills/lamina-product-behavior of aryaniyaps/lamina.
- SKILL.md
- references/consistency-guarantees.md
- references/dependencies.md
- references/idempotency-concurrency.md
- references/invariants.md
- references/modularity-boundaries.md
- references/multi-view-integrity.md
- references/platform-posture.md
- references/product-behavior.md
- references/side-effects.md
- references/time-semantics.md
Open the folder on GitHubat commit af269ef
Compare with similar skills
Lamina Product Behavior next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Lamina Product Behavior this skillaryaniyaps/lamina | 116 | — | ~775 | Automated safety check: Pass | Apache-2.0 | |
| Web Artifacts Builderanthropics/skills | 180k | 40 repos | ~769 | Automated safety check: Pass | Apache-2.0 | |
| React Doctormakeplane/plane | 61k | 12 repos | ~657 | Automated safety check: Pass | AGPL-3.0 | |
| Impeccablebestofjs/bestofjs | 3.1k | 26 repos | ~2.6k | Automated safety check: Pass | MIT | |
| Figma Design System Builderwarpdotdev/warp | 65k | 2 repos | ~4.4k | Automated safety check: Pass | AGPL-3.0 | |
| Web Interface Guidelines Reviewervercel-labs/openreview | 1.7k | 97 repos | ~308 | Automated safety check: Pass | None |
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Related
Categories
Questions about Lamina Product Behavior
What does Lamina Product Behavior do?
Define authoritative runtime product truth across actors and views. Lamina Product Behavior is an agent skill from aryaniyaps/lamina. Define authoritative runtime product truth across actors and views.
When should I use Lamina Product Behavior?
Lamina Product Behavior fits situations like: modeling domain behavior; setting product density; specifying side effects; protecting invariants.
How do I install Lamina Product Behavior in Claude Code?
Run `npx skills add aryaniyaps/lamina --skill lamina-product-behavior -a claude-code`. Or copy the skill folder (skills/lamina-product-behavior in aryaniyaps/lamina) into .claude/skills/lamina-product-behavior in your project. Claude Code loads it when a task matches its description.
How do I install Lamina Product Behavior in Codex?
Run `npx skills add aryaniyaps/lamina --skill lamina-product-behavior -a codex`. Or copy the skill folder (skills/lamina-product-behavior in aryaniyaps/lamina) into .agents/skills/lamina-product-behavior in your project. Codex loads it when a task matches its description.
Can I use Lamina Product Behavior in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aryaniyaps/lamina --skill lamina-product-behavior -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/lamina-product-behavior, .gemini/skills/lamina-product-behavior, .github/skills/lamina-product-behavior and .opencode/skills/lamina-product-behavior in your project.
What does Lamina Product Behavior need to run?
SKILL.md names no scripts, command-line tools or credentials: Lamina Product Behavior is instructions for the agent only.
Does Lamina Product Behavior access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Lamina Product Behavior safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Lamina Product Behavior use?
Lamina Product Behavior is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Lamina Product Behavior use?
About 775 tokens (SKILL.md is roughly 3.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 5.4k tokens, read only when the agent opens those files.
What are the alternatives to Lamina Product Behavior?
Skills that share tags, products or a category with Lamina Product Behavior: Web Artifacts Builder (anthropics/skills, 180k stars), React Doctor (makeplane/plane, 61k stars), Impeccable (bestofjs/bestofjs, 3.1k stars) and Figma Design System Builder (warpdotdev/warp, 65k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Lamina Product Behavior?
aryaniyaps (a GitHub user) maintains it in aryaniyaps/lamina, which has 116 GitHub stars. The repository holds 10 skills in this directory. The repository was last updated on October 1, 2026.
Source: aryaniyaps/lamina on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.