Nodejs Backend Patterns
ever-works/ever-works
Build production-ready Node.js backend services with Express/Fastify, implementing middleware patterns, error handling, authentication, database integration, and API design best practices.
Review system architecture, simplify boundaries, or compare interface designs from repository evidence
Install Octopus Architecture
$ npx skills add nyldn/claude-octopus --skill octopus-architecture -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install nyldn/claude-octopus octopus-architecture --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/nyldn/claude-octopus.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/octopus-architecture .claude/skills/octopus-architecture && 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 "octopus-architecture" agent skill from https://github.com/nyldn/claude-octopus/tree/main/skills/octopus-architecture into .claude/skills/octopus-architecture/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "octopus-architecture", 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/nyldn/claude-octopus/tree/main/skills/octopus-architectureType 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 nyldn/claude-octopus --skill octopus-architecture -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install nyldn/claude-octopus octopus-architecture --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nyldn/claude-octopus.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/octopus-architecture .agents/skills/octopus-architecture && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "octopus-architecture" agent skill from https://github.com/nyldn/claude-octopus/tree/main/skills/octopus-architecture into .agents/skills/octopus-architecture/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "octopus-architecture", 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 nyldn/claude-octopus --skill octopus-architecture -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install nyldn/claude-octopus octopus-architecture --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nyldn/claude-octopus.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/octopus-architecture .cursor/skills/octopus-architecture && 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 "octopus-architecture" agent skill from https://github.com/nyldn/claude-octopus/tree/main/skills/octopus-architecture into .cursor/skills/octopus-architecture/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "octopus-architecture", 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/nyldn/claude-octopus.git --path skills/octopus-architecture--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 nyldn/claude-octopus --skill octopus-architecture -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install nyldn/claude-octopus octopus-architecture --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nyldn/claude-octopus.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/octopus-architecture .gemini/skills/octopus-architecture && 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 "octopus-architecture" agent skill from https://github.com/nyldn/claude-octopus/tree/main/skills/octopus-architecture into .gemini/skills/octopus-architecture/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "octopus-architecture", 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 nyldn/claude-octopus octopus-architectureInstalls 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 nyldn/claude-octopus --skill octopus-architecture -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/nyldn/claude-octopus.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/octopus-architecture .github/skills/octopus-architecture && 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 "octopus-architecture" agent skill from https://github.com/nyldn/claude-octopus/tree/main/skills/octopus-architecture into .github/skills/octopus-architecture/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "octopus-architecture", 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 nyldn/claude-octopus --skill octopus-architecture -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install nyldn/claude-octopus octopus-architecture --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nyldn/claude-octopus.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/octopus-architecture .opencode/skills/octopus-architecture && 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 "octopus-architecture" agent skill from https://github.com/nyldn/claude-octopus/tree/main/skills/octopus-architecture into .opencode/skills/octopus-architecture/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "octopus-architecture", 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
octopus-architecture- GitHub stars
- 4.2k
- Used in
- 1 other repo
- Token cost
- ~752 tokens
- SKILL.md length
- 370 words
- Files
- 2
- Skills in repo
- 62
- Repo updated
- First seen
- Licence
- MIT
At a glance
Review system architecture, simplify boundaries, or compare interface designs from repository evidence
- Tasks that involve API design
- SKILL.md covers Method, Completion and LSP Integration
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Octopus Architecture is an agent skill from nyldn/claude-octopus. Review system architecture, simplify boundaries, or compare interface designs from repository evidence
Its SKILL.md is about 750 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `agents/openai.yaml`).
It sits in Backend & APIs, covering API design. The repository describes itself as: Run multiple AI models against the same research, design, or coding task. Surface disagreements before you ship. The licence is MIT.
When your agent uses it
- Tasks that involve API design
Example prompts
- “/octopus-architecture”
What it can do on your machine
Read from SKILL.md and the folder at commit c812f5e. 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
Octopus Architecture loads about 752 tokens when it runs. Until then it costs about 31 tokens; SKILL.md has 370 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 nyldn/claude-octopus at commit c812f5e, republished under its MIT licence (© nyldn). 370 words, ~752 tokens.
Download SKILL.mdSave it as
.claude/skills/octopus-architecture/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- octopus-architecture
- description
- Review system architecture, simplify boundaries, or compare interface designs from repository evidence
- disable-model-invocation
- true
Host: Codex CLI — This skill was designed for Claude Code and adapted for Codex. Cross-reference commands use installed skill names in Codex rather than
/octo:*slash commands. Use the active Codex shell and subagent tools. Do not claim a provider, model, or host subagent is available until the current session exposes it. For host tool equivalents, seeskills/blocks/codex-host-adapter.md.
Architecture review
Load skills/blocks/engineering-method-selection.md from the installed plugin
and apply only the methods relevant to this task. Preserve this entry point's
execution contract and output format. Read referenced skills as instructions;
do not invoke the current command recursively or add provider calls from a seat.
Run this method on the current host. A routine architecture review makes zero additional provider dispatches.
--peer-review, an explicit independent-review
request, or an existing risk policy may add one bounded external reviewer through
Octopus routing. Report incomplete independent coverage if that reviewer cannot
read the source or does not return a grounded contribution.
Method
Read and apply skills/blocks/architecture-simplification.md from the installed
plugin root. Pin the source revision and inspect implementation, callers, tests,
recent churn, and failure behavior before recommending a boundary.
For a single simplification, produce one evidence-backed interface. For a design choice, produce two alternatives from the same immutable requirements:
- Draft A minimizes caller knowledge and configuration.
- Draft B makes the next demonstrated extension easier.
Label two host-generated drafts as correlated alternatives from one model. If an independent reviewer is authorized, send it the same source and requirements but not Draft A before its first response. Transport diversity does not prove model family diversity. Unknown family means unknown independence.
Show full SKILL.md (107 more words)Show less
Completion
Return Evidence, Caller contract, Proposed interface, Migration, Test impact, and Decision. The decision is keep, simplify, or investigate.
simplify requires exact source evidence and a concrete caller example. A design
review never authorizes an automatic refactor.
LSP Integration
When the host exposes language-server tools, use document symbols, workspace symbols, definitions, and references to confirm module boundaries and caller relationships before proposing an interface. Treat LSP results as an index: verify consequential claims against source and tests, and fall back to repository search when the language server is unavailable or incomplete.
Adapted from codebase-design and DESIGN-IT-TWICE in mattpocock/skills at
commit 3cca18b368ae95cdbdebbff572ccafa662551015 under the MIT License. See
THIRD_PARTY_NOTICES.md.
© nyldn, MIT. 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 1 other file in skills/octopus-architecture of nyldn/claude-octopus.
- SKILL.md
- agents/openai.yaml
Open the folder on GitHubat commit c812f5e
Used in 1 other repository
We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in nyldn/claude-octopus, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Octopus Architecture 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 |
|---|---|---|---|---|---|---|
| Octopus Architecture this skillnyldn/claude-octopus | 4.2k | 1 repos | ~752 | Automated safety check: Pass | MIT | |
| Nodejs Backend Patternsever-works/ever-works | 162 | 18 repos | ~4k | Automated safety check: Pass | AGPL-3.0 | |
| API DesignerJeffallan/claude-skills | 12k | 1 repos | ~2k | Automated safety check: Pass | MIT | |
| Pangolin CRUD Endpointsfosrl/pangolin | 23k | — | ~461 | Automated safety check: Pass | Custom licence | |
| Backend PatternshellangleZ/burn-in-cceverywhere-ralph | 112 | 17 repos | ~3.3k | Automated safety check: Pass | None | |
| API Design Principlesjh941213/my-cc-harness | 125 | 18 repos | ~3.4k | Automated safety check: Pass | None |
Similar skills
API Designer
Jeffallan/claude-skills
Designs REST and GraphQL APIs from resource modeling to an OpenAPI 3.1 contract, with versioning, pagination and RFC 7807 error handling.
Pangolin CRUD Endpoints
fosrl/pangolin
Use whenever asked to add, create, or scaffold a CRUD endpoint, router, or entity in this repo's server (create/list/get/update/delete handlers, new…
Backend Patterns
hellangleZ/burn-in-cceverywhere-ralph
Backend architecture patterns, API design, database optimization, and server-side best practices for Node.js, Express, and Next.js API routes.
API Design Principles
jh941213/my-cc-harness
REST 및 GraphQL API 설계 원칙 가이드. An agent skill from jh941213/my-cc-harness.
API And Interface Design
dzhalaevd/Donatello
Guides stable API and interface design. An agent skill from dzhalaevd/Donatello.
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Related
Categories
Questions about Octopus Architecture
What does Octopus Architecture do?
Review system architecture, simplify boundaries, or compare interface designs from repository evidence. Octopus Architecture is an agent skill from nyldn/claude-octopus.
When should I use Octopus Architecture?
Octopus Architecture fits situations like: tasks that involve API design.
How do I install Octopus Architecture in Claude Code?
Run `npx skills add nyldn/claude-octopus --skill octopus-architecture -a claude-code`. Or copy the skill folder (skills/octopus-architecture in nyldn/claude-octopus) into .claude/skills/octopus-architecture in your project. Claude Code loads it when a task matches its description.
How do I install Octopus Architecture in Codex?
Run `npx skills add nyldn/claude-octopus --skill octopus-architecture -a codex`. Or copy the skill folder (skills/octopus-architecture in nyldn/claude-octopus) into .agents/skills/octopus-architecture in your project. Codex loads it when a task matches its description.
Can I use Octopus Architecture 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 nyldn/claude-octopus --skill octopus-architecture -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/octopus-architecture, .gemini/skills/octopus-architecture, .github/skills/octopus-architecture and .opencode/skills/octopus-architecture in your project.
What does Octopus Architecture need to run?
SKILL.md names no scripts, command-line tools or credentials: Octopus Architecture is instructions for the agent only.
Does Octopus Architecture 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 Octopus Architecture 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 Octopus Architecture use?
Octopus Architecture is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Octopus Architecture use?
About 752 tokens (SKILL.md is roughly 3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Octopus Architecture?
Skills that share tags, products or a category with Octopus Architecture: Nodejs Backend Patterns (ever-works/ever-works, 162 stars), API Designer (Jeffallan/claude-skills, 12k stars), Pangolin CRUD Endpoints (fosrl/pangolin, 23k stars) and Backend Patterns (hellangleZ/burn-in-cceverywhere-ralph, 112 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Octopus Architecture?
nyldn (a GitHub user) maintains it in nyldn/claude-octopus, which has 4,200 GitHub stars. The repository holds 62 skills in this directory. The repository was last updated on October 11, 2026.
Source: nyldn/claude-octopus on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.