Svelte Core Best Practices
rilldata/rill
Rules for writing idiomatic Svelte 5 code: when to reach for runes like state, derived and effect, and how to handle props, attachments and bindings.
Frontend reconnaissance — map the component tree, routing, state management, build config, and assess quality.
Install Prism Recon
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill prism-recon -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace prism-recon --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/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/ai-agency/tonone/skills/prism-recon .claude/skills/prism-recon && 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 "prism-recon" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/plugins/ai-agency/tonone/skills/prism-recon into .claude/skills/prism-recon/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prism-recon", 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/jeremylongshore/tons-of-skills-marketplace/tree/main/plugins/ai-agency/tonone/skills/prism-reconType 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 jeremylongshore/tons-of-skills-marketplace --skill prism-recon -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace prism-recon --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/ai-agency/tonone/skills/prism-recon .agents/skills/prism-recon && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "prism-recon" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/plugins/ai-agency/tonone/skills/prism-recon into .agents/skills/prism-recon/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prism-recon", 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 jeremylongshore/tons-of-skills-marketplace --skill prism-recon -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace prism-recon --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/ai-agency/tonone/skills/prism-recon .cursor/skills/prism-recon && 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 "prism-recon" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/plugins/ai-agency/tonone/skills/prism-recon into .cursor/skills/prism-recon/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prism-recon", 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/jeremylongshore/tons-of-skills-marketplace.git --path plugins/ai-agency/tonone/skills/prism-recon--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 jeremylongshore/tons-of-skills-marketplace --skill prism-recon -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace prism-recon --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/ai-agency/tonone/skills/prism-recon .gemini/skills/prism-recon && 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 "prism-recon" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/plugins/ai-agency/tonone/skills/prism-recon into .gemini/skills/prism-recon/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prism-recon", 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 jeremylongshore/tons-of-skills-marketplace prism-reconInstalls 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 jeremylongshore/tons-of-skills-marketplace --skill prism-recon -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/ai-agency/tonone/skills/prism-recon .github/skills/prism-recon && 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 "prism-recon" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/plugins/ai-agency/tonone/skills/prism-recon into .github/skills/prism-recon/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prism-recon", 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 jeremylongshore/tons-of-skills-marketplace --skill prism-recon -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace prism-recon --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/ai-agency/tonone/skills/prism-recon .opencode/skills/prism-recon && 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 "prism-recon" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/plugins/ai-agency/tonone/skills/prism-recon into .opencode/skills/prism-recon/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prism-recon", 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
prism-recon- GitHub stars
- 2.8k
- Token cost
- ~1.2k tokens
- SKILL.md length
- 398 words
- Files
- 2
- Skills in repo
- 3,342
- Repo updated
- First seen
- Licence
- MIT
At a glance
Frontend reconnaissance — map the component tree, routing, state management, build config, and assess quality.
- Works in 5 steps: Detect Environment → Map Component Tree → Map Architecture → …
- Asked to understand this frontend
- SKILL.md covers Steps and Delivery
- Calls bundle
What it does
Prism Recon is an agent skill from jeremylongshore/tons-of-skills-marketplace. Frontend reconnaissance — map the component tree, routing, state management, build config, and assess quality. Use when asked to "understand this frontend", "frontend assessment", or "what's the UI built with".
Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `.claude-plugin/plugin.json`).
It sits in Frontend & Design, covering State management. The repository describes itself as: Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com. The licence is MIT.
When your agent uses it
- Asked to understand this frontend
- Frontend assessment
- Whats the UI built with
Example prompts
- “understand this frontend”
- “frontend assessment”
- “s the UI built with”
- “/prism-recon”
Requirements
- Pre-approved tools (allowed-tools): Read, Bash, Glob, Grep, WebFetch, WebSearch, AskUserQuestion
Workflow steps
5 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit cfae287. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadBashGlobGrepWebFetchWebSearchAskUserQuestion
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
bundle
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
Prism Recon loads about 1.2k tokens when it runs. Until then it costs about 56 tokens; SKILL.md has 398 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: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Read, Bash, Glob, Grep, WebFetch, WebSearch, AskUserQuestion
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 jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 398 words, ~1,210 tokens.
Download SKILL.mdSave it as
.claude/skills/prism-recon/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- prism-recon
- description
- Frontend reconnaissance — map the component tree, routing, state management, build config, and assess quality. Use when asked to "understand this frontend", "frontend assessment", or "what's the UI built with".
- allowed-tools
- Read, Bash, Glob, Grep, WebFetch, WebSearch, AskUserQuestion
- version
- 0.6.4
- author
- tonone-ai <hello@tonone.ai>
- license
- MIT
Frontend Reconnaissance
You are Prism — the frontend and developer experience engineer from the Engineering Team.
Follow the output format defined in docs/output-kit.md — 40-line CLI max, box-drawing skeleton, unified severity indicators, compressed prose.
Steps
Step 0: Detect Environment
Scan the project to identify the complete frontend stack:
- Check for framework:
next.config.*,nuxt.config.*,svelte.config.*,astro.config.*,vite.config.*,remix.config.* - Check
package.jsonfor: all dependencies, scripts, engines - Check for TypeScript:
tsconfig.json— note strictness level - Check for monorepo:
pnpm-workspace.yaml,turbo.json,nx.json,lerna.json - Check deployment:
vercel.json,netlify.toml,fly.toml, Dockerfile, CI/CD configs
This is a read-only reconnaissance — do not modify anything.
Step 1: Map Component Tree
Understand how the UI is organized:
- Pages/routes: scan the routing structure (
app/,pages/,routes/,src/routes/) - Components: map the component hierarchy — shared components, page-specific components, layout components
- Component count: total components, average size, largest components
- Composition patterns: are components composed via children/slots, or configured via props
- Shared vs. page-specific: ratio of reusable to one-off components
Step 2: Map Architecture
Understand the technical architecture:
- Routing: file-based, config-based, or library-based — nested routes, dynamic routes, catch-all routes
- State management: what library (Zustand, Redux, Pinia, Svelte stores, React Context), how is state organized, is there a clear pattern
- Data fetching: server components, loaders, API routes, client-side fetching, tRPC, GraphQL — what patterns are used
- API integration: how does the frontend talk to the backend — REST, GraphQL, tRPC, direct DB access
- Styling: Tailwind, CSS Modules, styled-components, vanilla CSS — is there a design system or token system
- Build config: Vite, webpack, Turbopack — any custom plugins, aliases, or unusual configuration
Show full SKILL.md (149 more words)Show less
Step 3: Assess Quality Metrics
Measure the current state:
- Bundle size: check build output if available, or estimate from dependencies
- Dependency count: total deps, heavy deps, potentially unused deps
- Dependency freshness: how many major versions behind on key dependencies (framework, React, etc.)
- Test coverage: check for test files, test config, coverage reports — what percentage of components are tested
- TypeScript strictness: strict mode enabled, percentage of
anyusage, untyped areas - Accessibility baseline: quick scan for semantic HTML, ARIA usage, keyboard handlers, focus management
- Performance patterns: SSR vs. CSR split, code splitting usage, image optimization
Step 4: Present Assessment
## Frontend Reconnaissance
### Stack
- **Framework:** [name + version]
- **Language:** [TypeScript/JavaScript — strictness level]
- **Styling:** [approach]
- **State management:** [library/pattern]
- **Build tool:** [name + config notes]
- **Hosting:** [platform]
- **Testing:** [framework — coverage level]
### Architecture
- **Pages:** [count] routes — [routing pattern]
- **Components:** [count] total — [count] shared, [count] page-specific
- **Data fetching:** [pattern] — [server/client split]
- **API integration:** [approach]
### Health Indicators
| Metric | Status | Notes |
|--------|--------|-------|
| Bundle size | [size or unknown] | [assessment] |
| Dependencies | [count] | [freshness, issues] |
| Test coverage | [percentage or unknown] | [what's tested] |
| TypeScript | [strict/loose/none] | [any usage level] |
| Accessibility | [baseline assessment] | [key gaps] |
| Performance | [assessment] | [SSR/CSR, code splitting] |
### Strengths
- [what's well done]
### Risks
- [what could cause problems]
### Modernization Recommendations
1. [highest value improvement] — [effort] — [impact]
2. [next improvement] — [effort] — [impact]
3. [next improvement] — [effort] — [impact]Reconnaissance report — present facts, highlight risks, recommend improvements. Do not make changes.
Delivery
If output exceeds the 40-line CLI budget, invoke /atlas-report with the full findings. The HTML report is the output. CLI is the receipt — box header, one-line verdict, top 3 findings, and the report path. Never dump analysis to CLI.
© jeremylongshore, 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 plugins/ai-agency/tonone/skills/prism-recon of jeremylongshore/tons-of-skills-marketplace.
- SKILL.md
- .claude-plugin/plugin.json
Open the folder on GitHubat commit cfae287
Compare with similar skills
Prism Recon 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 |
|---|---|---|---|---|---|---|
| Prism Recon this skilljeremylongshore/tons-of-skills-marketplace | 2.8k | — | ~1.2k | Automated safety check: Notes | MIT | |
| Svelte Core Best Practicesrilldata/rill | 2.9k | 4 repos | ~1.8k | Automated safety check: Pass | Apache-2.0 | |
| Dify Component Writing Guidelanggenius/dify | 158k | — | ~626 | Automated safety check: Pass | Custom licence | |
| React State Managementinvolvex/youtube-music-cli | 456 | 13 repos | ~3k | Automated safety check: Pass | MIT | |
| Pierre Theming Librarypierrecomputer/pierre | 6.3k | — | ~661 | Automated safety check: Pass | Apache-2.0 | |
| Frontend Patternskurealnum/dotfiles | 290 | 19 repos | ~3.7k | Automated safety check: Pass | None |
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Dify Component Writing Guide
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Use when implementing or refactoring React/TypeScript components and the task requires decisions about component ownership, feature boundaries, state, data…
React State Management
involvex/youtube-music-cli
Master modern React state management with Redux Toolkit, Zustand, Jotai, and React Query.
Pierre Theming Library
pierrecomputer/pierre
Explains how to use the @pierre/theming package to list, resolve, select, switch and persist themes, with controller, color and React references.
Frontend Patterns
kurealnum/dotfiles
Frontend development patterns for React, Next.js, state management, performance optimization, and UI best practices.
LobeHub Data Fetching Layers
lobehub/lobehub
Explains how LobeHub client code fetches data through services, SWR store hooks and cache keys, and when to avoid useEffect fetching or duplicated state.
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Related
Categories
Questions about Prism Recon
What does Prism Recon do?
Frontend reconnaissance — map the component tree, routing, state management, build config, and assess quality. Prism Recon is an agent skill from jeremylongshore/tons-of-skills-marketplace. Frontend reconnaissance — map the component tree, routing, state management, build config, and assess quality.
When should I use Prism Recon?
Prism Recon fits situations like: asked to understand this frontend; frontend assessment; whats the UI built with.
How do I install Prism Recon in Claude Code?
Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill prism-recon -a claude-code`. Or copy the skill folder (plugins/ai-agency/tonone/skills/prism-recon in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/prism-recon in your project. Claude Code loads it when a task matches its description.
How do I install Prism Recon in Codex?
Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill prism-recon -a codex`. Or copy the skill folder (plugins/ai-agency/tonone/skills/prism-recon in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/prism-recon in your project. Codex loads it when a task matches its description.
Can I use Prism Recon 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 jeremylongshore/tons-of-skills-marketplace --skill prism-recon -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/prism-recon, .gemini/skills/prism-recon, .github/skills/prism-recon and .opencode/skills/prism-recon in your project.
What does Prism Recon need to run?
Going by SKILL.md and its folder, Prism Recon needs the command-line tools its instructions call (bundle). Its frontmatter pre-approves these tools: Read, Bash, Glob, Grep, WebFetch, WebSearch, AskUserQuestion.
Does Prism Recon 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 Prism Recon safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Prism Recon use?
Prism Recon is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Prism Recon use?
About 1.2k tokens (SKILL.md is roughly 4.8k 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 Prism Recon?
Skills that share tags, products or a category with Prism Recon: Svelte Core Best Practices (rilldata/rill, 2.9k stars), Dify Component Writing Guide (langgenius/dify, 158k stars), React State Management (involvex/youtube-music-cli, 456 stars) and Pierre Theming Library (pierrecomputer/pierre, 6.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Prism Recon?
jeremylongshore (a GitHub user) maintains it in jeremylongshore/tons-of-skills-marketplace, which has 2,827 GitHub stars. The repository holds 3,342 skills in this directory. The repository was last updated on October 10, 2026.
Source: jeremylongshore/tons-of-skills-marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.