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.
npx agentmods add skills/salesforcecommercecloud/b2c-developer-tooling/sfnext-create-componentnpx skills add SalesforceCommerceCloud/b2c-developer-tooling --skill sfnext-create-componentgit clone --depth 1 https://github.com/SalesforceCommerceCloud/b2c-developer-toolingWhat 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 | $0.00115 | $0.01863 |
| Opus 5 | $0.00057 | $0.00932 |
| Sonnet 5 | $0.00023 | $0.00373 |
| Haiku 4.5 | $0.00012 | $0.00186 |
Grade A, and why
sfnext-create-component 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 2d 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 — 196 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Create a Component Skill
This skill is the authoring discipline for adding a new component to a Storefront Next storefront: choosing the right layer, reusing before creating, and meeting the token / a11y / Storybook requirements that keep the design system consistent.
It complements
sfnext-components. That skill covers engineering patterns —createPage, Suspense/Awaitstreaming, shadcn/ui setup, thecn()utility. This skill covers design-system authoring — the layer model, the extend-before-create gate, CVA variants bound to semantic tokens,data-slot, accessibility, and story coverage. Use both together when building UI.
Before you start — scan first (extend before create)
Do not create a new component file until you have run this scan:
- Search
src/components/for components with a similar name or behaviour. - Search
src/components/ui/for Shadcn primitives — runnpx shadcn@latest add <name>to check whether it exists before hand-rolling one. - Apply the REUSE / EXTEND / CREATE decision:
- REUSE — an existing component already does this → use it as-is.
- EXTEND — an existing component is close → add a new CVA variant (cheaper than a new file).
- CREATE — nothing exists → proceed with this skill.
See Component Authoring Reference for the full layer model and the extend-before-create rule.
Step 1 — Decide the layer
| Question | Layer | Location |
|---|---|---|
| Pure UI element, no data or business logic? | Primitive | src/components/ui/ (check shadcn first) |
| Assembles primitives or takes data props? | Composite | src/components/ |
For primitives, always check shadcn before hand-rolling:
# from packages/template-retail-rsc-app
npx shadcn@latest add <component-name>
Shadcn components land in src/components/ui/ already wired to the token system. If it exists in shadcn, use it — do not hand-roll a replacement.
Step 2 — Create the file with the copyright header
What ships with it
5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 2d ago First seen · 196 lines · 115 tokens per session scan A b5d163da0cde
sfnext-create-component is a skill published in the GitHub repository SalesforceCommerceCloud/b2c-developer-tooling (53 stars, last pushed 3d ago), licensed Apache-2.0. It adds 115 tokens to every session and 1,863 once invoked, about $0.0006 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 2026-08-30.
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