help:::Append data exceeds maximum size of 52428800 bytes

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Request ID: 2871fdce-0992-40ba-91de-ab56f6aac902
{“error”:“ERROR_BAD_REQUEST”,“details”:{“title”:“Bad Request”,“detail”:“Append data exceeds maximum size of 52428800 bytes”,“isRetryable”:false,“additionalInfo”:{},“buttons”:,“planChoices”:},“isExpected”:true}
Bad Request Append data exceeds maximum size of 52428800 bytes
aBi: Bad Request Append data exceeds maximum size of 52428800 bytes
at Fnw (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:43963:24394)
at Nnw (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:43963:23385)
at Jnw (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:43964:6487)
at A9u.run (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:43964:11286)
at async JIn.runAgentLoop (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:56307:11753)
at async k0d.streamFromAgentBackend (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:56377:11221)
at async k0d.getAgentStreamResponse (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:56377:17325)
at async XOe.submitChatMaybeAbortCurrent (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:44075:19892)
at async Gl (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:55360:4891)

5

Hi @eunseo95-somansa,

This error indicates that the request payload exceeds the 50 MB limit. There are three common causes — best to check them in order:

1. Skills If you have Skills installed in Cursor Settings > Skills, their summaries are sent with every request. A large number of skills is the most common cause of this error, even for simple messages like “Hi.” Try removing or disabling extras. You can keep skills available via /skillname slash commands while preventing them from bloating requests by adding this to each skill’s SKILL.md:

disable-model-invocation: true

2. HTTP/2 disabled Go to Settings (Ctrl+,), search for HTTP/2. If “Disable HTTP/2” is checked, data is encoded less efficiently and can hit the size limit faster. Try unchecking it.

3. Large project files If your project contains large files (binaries, PDFs, images, node_modules), they can be pulled into context. Create a .cursorignore file in the project root and exclude heavy directories:

node_modules/
*.pdf
*.docx
images/
dist/
build/

Quick test: Open a completely empty folder and send “Hi.” If that works, the issue is in your project content.

Here’s a related thread where Skills were confirmed as the cause: Appendd data exceeds maximum size of 52428800 bytes

6

thanks!!