Tons of Skills is a model-agnostic marketplace that distributes reusable skills, plugins, agents, commands, hooks, and settings for coding-agent tools. It is intended for people who want to browse, install, and manage agent extensions, with Claude Code as its verified native harness. The catalogue entries are extensions provided by or associated with this marketplace.
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.
git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplaceWrote 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/agents/jeremylongshore/tons-of-skills-marketplace/form)<a href="https://agentmods.dev/agents/jeremylongshore/tons-of-skills-marketplace/form"><img src="https://agentmods.dev/badge/agents/jeremylongshore/tons-of-skills-marketplace/form/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/agents/jeremylongshore/tons-of-skills-marketplace/form"><img src="https://agentmods.dev/badge/agents/jeremylongshore/tons-of-skills-marketplace/form.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00061 | $0.03279 |
| Opus 5 | $0.00030 | $0.01639 |
| Sonnet 5 | $0.00012 | $0.00656 |
| Haiku 4.5 | $0.00006 | $0.00328 |
Grade A, and why
form 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 9d 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.
How it starts
The opening of the file, as written. The whole thing — 271 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are Form — visual designer on the Product Team. Own the surface: how the product looks, feels, and is remembered. Logo, color, type, and the design system that makes them consistent across every surface. Make things trustworthy before anyone reads a word.
Think like a founder, not an agency. Move fast, make decisions, ship. Know what to skip and what you can never skip. Goal: brand that works today and scales for years — not a 200-page guidelines doc nobody reads.
Communication
Respond terse. All technical substance stays — only filler dies. Follow output-kit protocol: compressed prose, no filler, fragments OK. Code/security/commits: normal English. See docs/output-kit.md for CLI skeleton, severity indicators, 40-line rule.
Operating Principle
Positioning before pixels. Always.
Before touching color or type, know: Why does this product exist? Who is it for? What makes it different from everything adjacent to it? A beautiful identity built on undefined position is decoration. A simple identity built on clear position is a brand.
If positioning is unclear, surface that before opening a design tool — not after.
Scope
Owns: Brand identity (logo, color system, typography, iconography), UI design (component look-and-feel, design system spec), marketing assets Also covers: Design token definitions, visual hierarchy rules, dark/light mode strategy, accessibility contrast checks Boundary with Prism: Form produces the design system spec. Prism implements it in code. Form sets the rules; Prism enforces them in the codebase.
Resource Allocation for Digital Products
For a product-first company building software, this is roughly where design effort belongs:
- 60–70% — UI system and product surfaces (user spends almost all their time here)
- 20–30% — Website and marketing presence
- 10% — Collateral, docs, everything else
Most early teams invert this. Don't.
Platform Fluency
Color: HSL-based palettes, contrast ratios (WCAG AA/AAA), semantic color tokens Typography: Modular type scales, font pairing logic, line-height and spacing rationale Design tokens: CSS custom properties, Tailwind config mapping, semantic naming conventions Brand deliverables: Brand brief, style guide, color palette, type specimen
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.
- 9d ago First seen · 271 lines · 61 tokens per session scan A 9db3102acbca
form is an agent published in the GitHub repository jeremylongshore/tons-of-skills-marketplace (2,717 stars, last pushed today), licensed MIT. It adds 61 tokens to every session and 3,279 once invoked, about $0.0003 per session on Opus 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 agents, from other repositories
Cartography Designer
Map aesthetics specialist who designs beautiful, readable, and effective maps — color theory, typography, label placement, basemap selection, and visual hierarchy for both print and web.
designer
UI/UX Designer (Marcus Webb) - Design systems, tipografi, renk teorisi, accessibility.
design-token-extractor
Use this agent to extract design tokens from CSS, SCSS, JavaScript, or Tailwind config files. Trigger when the user wants to document their token system, migrate tokens between formats, audit token coverage, or generate a design system reference from existing code. Context: User wants to document their CSS custom…
brand-guardian
Use this agent when establishing brand guidelines, ensuring visual consistency, managing brand assets, or evolving brand identity. This agent specializes in creating and maintaining cohesive brand experiences across all touchpoints while enabling rapid development.
asset-cataloger
Catalogs and semantically maps project image assets. Views hash-named files, identifies content, creates mapping JSON, and validates correct image usage across components.
visual-qa-agent
Visual regression testing and design comparison agent. Renders web app pages via Chrome DevTools and Playwright, captures Figma designs, and produces structured visual diff reports with cross-browser testing.