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 skills add forcedotcom/sf-skills --skill experience-ui-bundle-custom-app-generategit clone --depth 1 https://github.com/forcedotcom/sf-skillsWrote 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/skills/forcedotcom/sf-skills/experience-ui-bundle-custom-app-generate)<a href="https://agentmods.dev/skills/forcedotcom/sf-skills/experience-ui-bundle-custom-app-generate"><img src="https://agentmods.dev/badge/skills/forcedotcom/sf-skills/experience-ui-bundle-custom-app-generate/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/skills/forcedotcom/sf-skills/experience-ui-bundle-custom-app-generate"><img src="https://agentmods.dev/badge/skills/forcedotcom/sf-skills/experience-ui-bundle-custom-app-generate.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector pass
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 | $0.00125 | $0.02006 |
| Opus 5 | $0.00063 | $0.01003 |
| Sonnet 5 | $0.00025 | $0.00401 |
| Haiku 4.5 | $0.00013 | $0.00201 |
Grade A, and why
experience-ui-bundle-custom-app-generate 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 10d 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 — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Custom Application for React UI Bundles
Create and configure a Salesforce Custom Application that hosts a React UI bundle in Lightning Experience. This skill generates the CustomApplication metadata so the app appears in the Lightning App Launcher and can be accessed by internal users.
Custom Applications differ from Experience Sites: they don't need Networks, CustomSite, DigitalExperienceConfig, or DigitalExperienceBundle metadata. The Custom Application acts as a thin launcher entry that delegates rendering to the React UI bundle referenced by uiBundle.
Required Properties
Resolve all properties before generating any metadata. Each has a fallback chain — work through each option in order until a value is found.
| Property | Format | How to Resolve |
|---|---|---|
| appName | lowercamelcase (e.g., myInternalApp) |
The UI bundle name from uiBundles/<name>/ directory |
| appNamespace | String | namespace in sfdx-project.json → sf data query -q "SELECT NamespacePrefix FROM Organization" --target-org ${usernameOrAlias} → default c |
| appLabel | Human-readable string | User-provided, or derive from appName by converting camelCase to Title Case |
The appNamespace and appName connect the Custom Application to the correct React UI bundle. In newer API versions this uses <uiBundle>{appNamespace}__{appName}</uiBundle>; in older versions it uses <webApplication>{appName}</webApplication>. Getting this wrong means the app launcher entry exists but shows a blank page. Step 2 of the workflow determines which field to use.
Generation Workflow
Step 1: Resolve All Required Properties
Determine values for all properties before constructing anything. Use the resolution strategies in the table above.
Step 2: Query API Context (Version-Aware Field Discovery)
Call salesforce-api-context MCP tools to discover which fields exist for the target org's API version. This ensures the generated metadata is compatible with the user's Salesforce version.
What ships with it
2 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.
- 10d ago First seen · 119 lines · 125 tokens per session scan A d81cc832821e
experience-ui-bundle-custom-app-generate is a skill published in the GitHub repository forcedotcom/sf-skills (978 stars, last pushed yesterday), licensed Apache-2.0. It adds 125 tokens to every session and 2,006 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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