feat: add UI resource metadata types for CSP and rendering config #65
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Add types for parsing `_meta.ui` field from resources/read responses: - McpUiResourceCspSchema: CSP domain declarations (connectDomains for fetch/XHR/WebSocket, resourceDomains for scripts/images/fonts) - McpUiResourceMetaSchema: Full metadata including CSP, dedicated domain for widget sandbox, and border preference Hosts need these to construct CSP headers and configure iframe sandboxing. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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idosal
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Dec 2, 2025
| * Servers declare which external origins their UI needs to access. | ||
| * Hosts use this to enforce appropriate CSP headers. | ||
| */ | ||
| export const McpUiResourceCspSchema = z.object({ |
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@antonpk1 What do you think about add describes to the fields?
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Note I've been toying w/ generating the zod schemas (in this branch), I think we should focus on clean types and automate the rest. (I wouldn't even put comments on the schemas to stay consistent w/ current state of this file, to avoid comment duplication)
ochafik
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Dec 2, 2025
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Summary
Add Zod schemas and TypeScript types for
_meta.uifield fromresources/readresponses:McpUiResourceCspSchema/McpUiResourceCsp- CSP domain declarationsMcpUiResourceMetaSchema/McpUiResourceMeta- Full UI resource metadataWhy
The spec defines these types in
UIResourceMetabut they weren't implemented in the SDK. Hosts need these to:connectDomains(fetch/XHR/WebSocket) andresourceDomains(scripts/images/fonts)domainfor API key allowlistsprefersBorderpreference🤖 Generated with Claude Code