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 emilianoeloi/ios-WK-UI-WebView --skill webview-legacy-referencegit clone --depth 1 https://github.com/emilianoeloi/ios-WK-UI-WebViewWrote 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/emilianoeloi/ios-wk-ui-webview/webview-legacy-reference)<a href="https://agentmods.dev/skills/emilianoeloi/ios-wk-ui-webview/webview-legacy-reference"><img src="https://agentmods.dev/badge/skills/emilianoeloi/ios-wk-ui-webview/webview-legacy-reference/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/emilianoeloi/ios-wk-ui-webview/webview-legacy-reference"><img src="https://agentmods.dev/badge/skills/emilianoeloi/ios-wk-ui-webview/webview-legacy-reference.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 | $0.00037 | $0.00330 |
| Opus 5 | $0.00018 | $0.00165 |
| Sonnet 5 | $0.00007 | $0.00066 |
| Haiku 4.5 | $0.00004 | $0.00033 |
Grade A, and why
webview-legacy-reference 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.
What it actually says
WebView Legacy Reference
Purpose
Turn this repository into a practical knowledge base for Apple WebView legacy topics with positive framing:
- historical evolution
- practical usage patterns
- migration decision support
- safe maintenance guidance
When To Use
Use this skill when requests involve:
- historical context of UIWebView and WKWebView
- best practices for navigation, delegation, and bridge contracts
- migration strategy in legacy Objective-C codebases
- repository-level guidance for maintainers and learners
Required Output
- Explain context with historical timeline and current relevance
- Link recommendation to concrete references in
references/ - Distinguish learning/demo advice from production-critical advice
- Provide safe next steps for this repository architecture
Rules
- Use positive language for the term legacy: stable, battle-tested, and educational value
- Do not treat legacy as obsolete without context
- Always highlight compatibility and risk management
- Keep bridge protocol semantics explicit when cited
- Ground historical and behavioral claims in the files under
references/; if a claim is not covered there, mark itnot in referencesand cite an official Apple/WebKit source instead of asserting it from memory
Reference Index
- references/uiwebview.md
- references/wkwebview.md
- references/webview-javascript-bridge.md
- references/migration-playbook.md
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.
- 10d ago First seen · 47 lines · 37 tokens per session scan A c2f9b820f408
webview-legacy-reference is a skill published in the GitHub repository emilianoeloi/ios-WK-UI-WebView (3 stars, last pushed 2mo ago), licensed MIT. It adds 37 tokens to every session and 330 once invoked, about $0.0002 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 2026-08-31.
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