Stewdio
Cekura, Inc. v0.9.0
Create & edit motion graphics
From the developer
Declared limitations
- A general-knowledge question unrelated to Stewdio. Answer it without calling any Stewdio tool.
- Only a File's owner can delete it. Explain that the user can't delete Files others shared with them, without calling delete_file, write_xml, or edit_xml or trying a workaround.
- Access is limited to the user's own Files and Files shared with them. Explain that boundary without trying to get around authorization or exposing other users' content.
Not specified in the available declarations: capabilities, pricing & account requirements.
Sources & dates
Developer declarations; not independently tested. Listing last checked Nov 13, 2026. Package observed Nov 12, 2026.
Description
From the marketplace listing
Design and edit motion graphics and visual assets with Stewdio. Create product launch animations, feature explainers, animated UI demos, and brand assets. Describe what you want to make with ChatGPT and refine the result with precise control in Stewdio's visual editor to adjust colors, typography, layout, animation timing, and much more. Preview your work as you edit, and discuss it with your team in Comments. Requires a Stewdio account.
Language: English · Automatically detected from descriptions.
Changes
No changes recorded yet. Follow this plugin to keep track of future changes.
First seen Nov 10, 2026. Last seen Nov 13, 2026.
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Files & skills
File archives
Release notes
Resubmission addressing the iframe review. Sign-in and editor handoff - Origins: mcp.stewdio.ai (MCP server and widget), www.stewdio.ai/mcp-app (Stewdio editor, framed in the widget), api.stewdio.ai (API), signin.stewdio.ai (WorkOS AuthKit). - Sign-in: OAuth 2.1 through AuthKit. The MCP server exchanges the user's token for a short-lived API credential on each request. The widget never receives the OAuth token. - Widget CSP: connect mcp.stewdio.ai; resources data: and mcp.stewdio.ai; frames and redirects www.stewdio.ai only. The editor page sends frame-ancestors limited to chatgpt.com, *.oaiusercontent.com, claude.ai, and *.claudemcpcontent.com. - Channel: the editor posts "ready". The widget checks the source window and origin, then hands it a private MessageChannel port that carries every later message. - Ticket: the widget calls issue_file_ticket, which is app-only (_meta.ui.visibility ["app"]), so the model can't call it. The ticket comes back in _meta, never in content the model sees. It is random (256 bits), single-use, and tied to one user, one File, and read or write access. It expires after 60 seconds and is stored only as a SHA-256 hash. - Redeem: the editor redeems the ticket once on api.stewdio.ai for a 10-minute File token, also stored only as a hash. The token works for HTTP calls and the realtime WebSocket, only for an allowlist of File, asset, and comment procedures on that File. Anything else returns 403. - Renew and close: the editor asks the widget for a fresh ticket before expiry, after a 401, or when it reconnects. When the File closes, it revokes its tokens. The ticket never appears in a URL, cookie, or browser storage. Also in this version: capture, edit_xml, and renaming and deleting Files.
Declared in the saved package. Remote tools may change independently.
Package details
Publisher declarations from the archived package. These are separate from our research and the live service's terms.
- Package author
- Cekura, Inc.
- Review scenarios
- 5 positive · 3 negativeScenario counts, not test results.
Package observed Nov 12, 2026.
Technical details
- First seen
- Nov 10, 2026 · 00:00 UTC
- Last seen
- Nov 13, 2026 · 06:00 UTC
- Collection status
- Collected
plugin_asdk_app_6ad427c526588191aaf9765c8700f295
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