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Prism

Connect DeepSeek to After Effects

Yes. DeepSeek can drive After Effects. Everything in DeepSeek Harness is a plugin, including its MCP client — and that is the part that matters. Swap the built-in client for one that does OAuth and DSH connects like anything else. About five minutes, once.

DeepSeek surfaceConnectsHow
DSH + dsh-mcp-managerYesBrowser OAuth, PKCE, dynamic client registration
DSH + dsh-oauth-mcp-clientYesSame flow, drop-in for the native client
Any OAuth-capable client running DeepSeekYesOpenCode, Cline, Cursor, Zed
DSH, built-in client onlyNoStatic headers only, no OAuth flow
DeepSeek app · chat.deepseek.comNoNo MCP client

Connect DeepSeek to After Effects

The built-in MCP client is not the one you want

@deepseek-ai/dsh-mcp-client accepts a static headers block and nothing else. Prism issues no keys, so there is nothing to put in it. Install an OAuth plugin instead — DSH is built for exactly this.

Install the Prism panel
Done in step 1 and step 2.
Sign in from the panel
Done in step 3.
Copy your MCP address
https://live.oneprism.io/after-effects — the same for everyone, and it holds no secret.
4
Install an OAuth MCP plugin
Either dsh-mcp-manager or dsh-oauth-mcp-client. Both replace the built-in client with one that can complete a browser sign-in, and both keep the token across restarts.
5
Add Prism as a remote HTTP server
Point it at the address above with the streamable HTTP transport. Leave the headers block out entirely — there is no token to put in it.
6
Authorise it in your browser
The plugin opens your browser and asks you to confirm it is you. Complete it there. Its tools then register as mcp__prism__* and the model can call them like local ones.
7
Open a composition and confirm the loop
Ask DeepSeek: "Tell me about my current composition." When it reads your comp back to you, you are connected.

Or skip the commands: paste the address into the agent itself and ask it to add the MCP server. It can configure its own client.

Prove it works

  • "Tell me about my current composition." proves the read path
  • "Stagger these layers by two frames and ease them out." proves the write path
  • "Transcribe this audio layer into subtitles." proves Prism AI

More in your first prompts.

If it does not work

What you seeWhat it usually means
DSH asks for an API keyThe built-in client is still active. Install an OAuth plugin
The server is added but every call is refusedThe browser authorisation was never completed
Tools do not appear as mcp__prism__*The server failed to register. Check the plugin's own log
DeepSeek cannot reach PrismThe panel is closed. It has to be open in After Effects
It connects but sees no compositionNo comp is active. Open one

More in troubleshooting.

Common questions