Open UX Tools is a collection of open-source modules for building SAP Fiori applications more efficiently. SAP Fiori developers and related projects use the reusable modules to create development tools and to contribute fixes, findings, and improvements through community collaboration.
Borrowing it
Nothing to install: this file belongs to SAP/open-ux-tools. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/SAP/open-ux-tools/main/.agents/skills/eslint-rule-development/SKILL.mdgit clone --depth 1 https://github.com/SAP/open-ux-toolsWrote 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/sap/open-ux-tools/eslint-rule-development)<a href="https://agentmods.dev/skills/sap/open-ux-tools/eslint-rule-development"><img src="https://agentmods.dev/badge/skills/sap/open-ux-tools/eslint-rule-development/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/sap/open-ux-tools/eslint-rule-development"><img src="https://agentmods.dev/badge/skills/sap/open-ux-tools/eslint-rule-development.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 20 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00094 | $0.03020 |
| Opus 5.5 | $0.00038 | $0.01208 |
| Sonnet 5.5 | $0.00019 | $0.00604 |
| Haiku 4.5 | $0.00009 | $0.00302 |
Grade A, and why
eslint-rule-development 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 14d 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 — 228 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Fiori ESLint Rule Developer
Add a new ESLint rule to @sap-ux/eslint-plugin-fiori-tools following the established patterns in the monorepo.
⚡ Efficiency rules — read before doing anything
- Use the
Readtool directly — neverBash cator spawn Explore subagents for file reading - Read everything in one parallel batch — each fast path lists the exact files; read them all at once in a single turn
- Run only the new test file during development — not the full package suite:
NODE_OPTIONS="--experimental-vm-modules" npx jest --testPathPatterns="sap-[rule-name]" --no-coverage
Step 1 — Identify the rule type, then read the reference file
| Type | Use when | Reference file |
|---|---|---|
| Annotation rule | Validates UI.* OData annotations in .xml / .cds files. Also, covers rules where text, that is, a label, title, or description, can be an i18n binding |
references/annotation.md |
| Manifest JSON rule | Validates manifest.json properties |
references/manifest-json.md |
| Flex change file rule | Validates webapp/changes/*.change (Applicable only to OData V2 flex change properties) |
references/flex-change.md |
| JavaScript / TypeScript rule | Validates JS/TS application source code (UI5 patterns, global variables, deprecated APIs) | references/js-ts-rule.md |
Infer from the request:
- Rule name —
sap-[kebab-case-name]pattern - OData version — V2 only, V4 only, or both
- Page scope — which page types to check. Default: all page types (list report, object page, etc.) unless the spec explicitly restricts the scope. Do not limit to one page type based on the examples in the spec.
- Auto-fix — yes/no
- Severity —
errororwarn. Rules inrecommended-for-s4hanaMUST bewarn.
OData version determines the linker file — always follow the stated version:
| OData version | Linker file | Manifest root |
|---|---|---|
| V2 only | src/project-context/linker/fe-v2.ts |
sap.ui.generic.app.pages.* |
| V4 only | src/project-context/linker/fe-v4.ts |
sap.ui5.routing.targets.* |
| Both | both linker files | both roots |
What ships with it
4 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.
- 14d ago Changed · +5 lines 48fcc6a423c7
- 17d ago Changed · +1 lines 16dddc2936d0
- 1mo ago Changed · +5 lines f0f5d318c541
- 1mo ago First seen · 217 lines · 94 tokens per session scan A b359a0667508
eslint-rule-development is a skill published in the GitHub repository SAP/open-ux-tools (159 stars, last pushed today), licensed Apache-2.0. It adds 94 tokens to every session and 3,020 once invoked, about $0.0004 per session on Opus 5.5. 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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Review and land an external contribution the way this suite does: gate it against the thesis, land it with the author's credit intact, complete a new skill rather than merging it raw, then approve, credit, and explain before closing. Use when reviewing a pull request, as any collaborator or maintainer, not only the…
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