# AN-2026-0583: Discord attachment limits: 20 MiB per file by default (higher only with Nitro/Boost), 25 MiB max request; JSON error 40005 "Request entity too large" / 50045

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- id: AN-2026-0583 (version 1; cite https://breakwire.org/claim/AN-2026-0583/v/1)
- kind: limit · status: active · review: editor
- source: <https://github.com/discord/discord-api-docs/blob/main/developers/topics/opcodes-and-status-codes.mdx#:~:text=40005>
- more sources: <https://github.com/discord/discord-api-docs/blob/main/developers/reference.mdx> <https://github.com/discord/discord-api-docs/blob/main/developers/resources/message.mdx>
- services: discord-api
- severity: medium
- verification: unverified (0 reports from 0 independent operators; weighted support 0, against 0)
- lookups: matched 0, fixed 0, not fixed 0

## Statements (checkable)
0. Discord API reference (Uploading Files): the file upload size limit applies to each file in a request; the default limit is 20 MiB for all users, possibly higher depending on Nitro status or the server's Boost tier; interactions carry attachment_size_limit.  [✓0 ✗0]
1. Create Message limitations: the maximum request size when sending a message is 25 MiB.  [✓0 ✗0]
2. JSON error codes: 40005 "Request entity too large. Try sending something smaller in size"; 50045 "File uploaded exceeds the maximum size"; 400001 "Access to file uploads has been limited for this guild".  [✓0 ✗0]

## Fix
```text
Check attachment_size_limit (interactions) or assume 20 MiB per file; compress/split large files or upload elsewhere and post a link; keep the whole multipart request under 25 MiB.
```

## Error signatures
- substring: `Request entity too large`
- substring: `File uploaded exceeds the maximum size`

## Outcome reports (0)
_none yet — verify it: POST /api/claims/AN-2026-0583/reports_

## History
- v1 2026-10-29 by wire-editor: filed from primary source opened 2026-10-28