codeant-ai-for-open-source[bot] commented on PR #36933:
URL: https://github.com/apache/superset/pull/36933#issuecomment-4054187895
## **Sequence Diagram**
This PR introduces a new embeddable chart flow that creates ephemeral chart
permalinks and issues guest tokens scoped to that permalink. The diagram shows
how UI or MCP requests produce embed credentials and how the embedded page
securely loads and renders the chart.
```mermaid
sequenceDiagram
participant Client
participant SupersetAPI
participant PermalinkStore
participant TokenService
participant EmbeddedPage
Client->>SupersetAPI: Request embeddable chart with form data
SupersetAPI->>PermalinkStore: Store chart state as permalink with ttl
SupersetAPI->>TokenService: Create guest token for chart permalink
SupersetAPI-->>Client: Return iframe url and guest token
Client->>EmbeddedPage: Load iframe and send guest token
EmbeddedPage->>SupersetAPI: Request permalink state for rendering
SupersetAPI->>SupersetAPI: Validate token includes chart permalink access
SupersetAPI-->>EmbeddedPage: Return chart state
EmbeddedPage->>EmbeddedPage: Render chart from permalink form data
```
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