Evolutionary Modular Architecture
tech-leads-club/agent-skills
Guides design of modular-monolith platforms with DDD, flat-by-aggregate modules, anti-corruption layers, outbox events and resilience, plus an architecture document with SVG diagrams.
Apply Whispering service-boundary patterns for UI-free capabilities, explicit inputs, Result fallibility, Live objects, lifecycle factories, and platform variants.
Install Services Layer
$ npx skills add EpicenterHQ/epicenter --skill services-layer -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install EpicenterHQ/epicenter services-layer --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/EpicenterHQ/epicenter.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/services-layer .claude/skills/services-layer && 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 "services-layer" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/services-layer into .claude/skills/services-layer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "services-layer", 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/EpicenterHQ/epicenter/tree/main/.agents/skills/services-layerType 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 EpicenterHQ/epicenter --skill services-layer -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install EpicenterHQ/epicenter services-layer --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/services-layer .agents/skills/services-layer && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "services-layer" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/services-layer into .agents/skills/services-layer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "services-layer", 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 EpicenterHQ/epicenter --skill services-layer -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install EpicenterHQ/epicenter services-layer --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/services-layer .cursor/skills/services-layer && 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 "services-layer" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/services-layer into .cursor/skills/services-layer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "services-layer", 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/EpicenterHQ/epicenter.git --path .agents/skills/services-layer--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 EpicenterHQ/epicenter --skill services-layer -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install EpicenterHQ/epicenter services-layer --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/services-layer .gemini/skills/services-layer && 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 "services-layer" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/services-layer into .gemini/skills/services-layer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "services-layer", 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 EpicenterHQ/epicenter services-layerInstalls 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 EpicenterHQ/epicenter --skill services-layer -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/services-layer .github/skills/services-layer && 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 "services-layer" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/services-layer into .github/skills/services-layer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "services-layer", 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 EpicenterHQ/epicenter --skill services-layer -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install EpicenterHQ/epicenter services-layer --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/services-layer .opencode/skills/services-layer && 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 "services-layer" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/services-layer into .opencode/skills/services-layer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "services-layer", 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
services-layer- GitHub stars
- 4.8k
- Token cost
- ~1.3k tokens
- SKILL.md length
- 558 words
- Files
- 3 (incl. references)
- Skills in repo
- 65
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Apply Whispering service-boundary patterns for UI-free capabilities, explicit inputs, Result fallibility, Live objects, lifecycle factories, and platform variants.
- Refactoring services
- SKILL.md covers Product Sentence, Boundary, Model Fallibility Honestly and Direct Object Or Factory, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Provider dispatch
What it does
Services Layer is an agent skill from EpicenterHQ/epicenter. Apply Whispering service-boundary patterns for UI-free capabilities, explicit inputs, Result fallibility, Live objects, lifecycle factories, and platform variants. Use when creating or refactoring services, contracts, provider dispatch, or the $lib/services barrel.
Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `references/service-implementation-pattern.md` and `references/service-organization-platforms.md`).
It sits in Development, covering Microservices and Refactoring. The repository describes itself as: Open-source, local-first apps.
When your agent uses it
- Refactoring services
- Provider dispatch
- The $lib/services barrel
Example prompts
- “/services-layer”
What it can do on your machine
Read from SKILL.md and the folder at commit 9cc65c3. 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 (its code samples are typescript).
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
Services Layer loads about 1.3k tokens when it runs, and up to ~2.5k if it reads all its reference files. Until then it costs about 71 tokens; SKILL.md has 558 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 558 words (~1,266 tokens).
“Ground service guidance in apps/whispering/src/lib/services, its consumers, and the #platform/* mappings in apps/whispering/package.json. Historical examples and neighboring skills are leads, not current architecture.”
- name
- services-layer
- metadata.author
- epicenter
- metadata.version
- 3.0
Files
SKILL.md and 2 other files (references) in .agents/skills/services-layer of EpicenterHQ/epicenter.
- SKILL.md
- references/service-implementation-pattern.md
- references/service-organization-platforms.md
Open the folder on GitHubat commit 9cc65c3
Compare with similar skills
Services Layer 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 |
|---|---|---|---|---|---|---|
| Services Layer this skillEpicenterHQ/epicenter | 4.8k | — | ~1.3k | Automated safety check: Pass | Custom licence | |
| Evolutionary Modular Architecturetech-leads-club/agent-skills | 7k | — | ~3.7k | Automated safety check: Pass | CC-BY-4.0 | |
| Designing ArchitectureCloudAI-X/claude-workflow-v2 | 1.4k | 1 repos | ~1.4k | Automated safety check: Pass | MIT | |
| Bootui Java Developmentjdubois/boot-ui | 307 | — | ~1.3k | Automated safety check: Pass | Apache-2.0 | |
| Atomui Control OptimizationAtomUI/AtomUI | 842 | — | ~3.4k | Automated safety check: Pass | LGPL-3.0 | |
| Go Standardsasymmetric-research/solana-exporter | 133 | — | ~1.6k | Automated safety check: Pass | Apache-2.0 |
Similar skills
Designing Architecture
CloudAI-X/claude-workflow-v2
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Bootui Java Development
jdubois/boot-ui
A skill your agent uses when implementing, debugging, refactoring, or testing existing BootUI Java code, including framework-neutral engine logic, Spring MVC and WebFlux adapters, Quarkus runtime…
Atomui Control Optimization
AtomUI/AtomUI
A skill your agent uses when optimizing, refactoring, reviewing, or fixing AtomUI controls, including control API contracts, member layout, file splitting, lifecycle, AXAML structure, correctness…
Go Standards
asymmetric-research/solana-exporter
Idiomatic Go conventions — naming, error handling, concurrency, interfaces, testing, and API design.
Crowdin API Client
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More from EpicenterHQ/epicenter
All 65 skills in this repoAgent Instructions
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Write and maintain repository guidance across AGENTS.md, CLAUDE.md, and .agents/skills.
Consult Claude
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Assign Claude Code a read-only investigation, recommendation, or finished text draft.
Better Auth Security Best Practices
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Better Auth security hardening: rate limits, secrets, CSRF, trusted origins, cookies, sessions, OAuth tokens, and audit logging.
Cohesion Over Testability
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Collapse test-shaped production boundaries while preserving behavior and coverage.
Collapse Pass
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Remove indirection that does not earn its boundary across a diff or package.
Error Handling
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Apply Wellcrafted Result patterns to fallible operations and preserve failures at boundaries.
Related
Categories
Questions about Services Layer
What does Services Layer do?
Apply Whispering service-boundary patterns for UI-free capabilities, explicit inputs, Result fallibility, Live objects, lifecycle factories, and platform variants. Services Layer is an agent skill from EpicenterHQ/epicenter. Apply Whispering service-boundary patterns for UI-free capabilities, explicit inputs, Result fallibility, Live objects, lifecycle factories, and platform variants.
When should I use Services Layer?
Services Layer fits situations like: refactoring services; provider dispatch; the $lib/services barrel.
How do I install Services Layer in Claude Code?
Run `npx skills add EpicenterHQ/epicenter --skill services-layer -a claude-code`. Or copy the skill folder (.agents/skills/services-layer in EpicenterHQ/epicenter) into .claude/skills/services-layer in your project. Claude Code loads it when a task matches its description.
How do I install Services Layer in Codex?
Run `npx skills add EpicenterHQ/epicenter --skill services-layer -a codex`. Or copy the skill folder (.agents/skills/services-layer in EpicenterHQ/epicenter) into .agents/skills/services-layer in your project. Codex loads it when a task matches its description.
Can I use Services Layer 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 EpicenterHQ/epicenter --skill services-layer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/services-layer, .gemini/skills/services-layer, .github/skills/services-layer and .opencode/skills/services-layer in your project.
What does Services Layer need to run?
SKILL.md names no scripts, command-line tools or credentials: Services Layer is instructions for the agent only.
Does Services Layer 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 Services Layer 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 Services Layer use?
Services Layer has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Services Layer use?
About 1.3k tokens (SKILL.md is roughly 5.1k 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 1.2k tokens, read only when the agent opens those files.
What are the alternatives to Services Layer?
Skills that share tags, products or a category with Services Layer: Evolutionary Modular Architecture (tech-leads-club/agent-skills, 7k stars), Designing Architecture (CloudAI-X/claude-workflow-v2, 1.4k stars), Bootui Java Development (jdubois/boot-ui, 307 stars) and Atomui Control Optimization (AtomUI/AtomUI, 842 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Services Layer?
EpicenterHQ (a GitHub organization) maintains it in EpicenterHQ/epicenter, which has 4,819 GitHub stars. The repository holds 65 skills in this directory. The repository was last updated on October 8, 2026.
Source: EpicenterHQ/epicenter on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.