@W-22968653 Add MCP app CSP _meta for ChatGPT#408
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ChatGPT's Apps SDK sandbox does not honor the standard MCP-UI _meta.ui.csp, so the Tableau embedding script was blocked by the sandbox CSP. Emit the legacy OpenAI-proprietary openai/widgetCSP key (snake_case connect_domains/resource_domains/frame_domains) alongside the existing _meta.ui.csp so ChatGPT picks up the allowed Tableau domains.
ChatGPT's Apps SDK reads openai/widgetCSP and _meta.ui.csp from the resources/read content item, not the resource registration options. Move both CSP blocks onto the content item returned by the read callback so ChatGPT applies the allowed Tableau domains to the widget sandbox CSP.
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Drop the legacy OpenAI-proprietary CSP key, keeping only the standard MCP-UI _meta.ui.csp structure.
jarhun88
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jarhun88
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yyk16293
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Jun 19, 2026
anyoung-tableau
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Jun 19, 2026
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Summary
I had the CSP in the wrong place. moving to where the mcp sdk expects it to be to work
Changes
_meta.ui.csp(connectDomains / resourceDomains / frameDomains) on MCP app resource contents