[Bug] Anthropic API Error: Internal Server Error (500)
Resolved 💬 36 comments Opened Mar 17, 2026 by masem1899 Closed Mar 18, 2026
💡 Likely answer: A maintainer (chrislloyd, collaborator)
responded on this thread — see the highlighted reply below.
Bug Description
API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal
server error"},"request_id":"req_011CZ9DRVwgmr76K3mewcdDa"}
Environment Info
- Platform: win32
- Terminal: vscode
- Version: 2.1.77
- Feedback ID: 1db5a563-b8d4-49a8-9a68-dce6d40749d3
Errors
[{"error":"Error: Request was aborted.\n at xEA (B:/~BUN/root/src/entrypoints/cli.js:1246:68515)\n at next (native:1:11)\n at xK_ (B:/~BUN/root/src/entrypoints/cli.js:6483:6962)\n at next (native:1:11)\n at UK_ (B:/~BUN/root/src/entrypoints/cli.js:6488:9173)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-03-17T13:59:21.419Z"},{"error":"Error: Request was aborted.\n at makeRequest (B:/~BUN/root/src/entrypoints/cli.js:505:3940)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-03-17T15:24:58.384Z"},{"error":"ENOENT: no such file or directory, unlink 'C:\\Users\\mario\\AppData\\Local\\Temp\\claude\\C--Users-mario-Sources-dev-paywatcher\\8fb6fe4c-832d-4747-8a8a-ea7671c1913c\\tasks\\af3b9256d122e186e.output'","timestamp":"2026-03-17T15:28:47.602Z"},{"error":"ENOENT: no such file or directory, unlink 'C:\\Users\\mario\\AppData\\Local\\Temp\\claude\\C--Users-mario-Sources-dev-paywatcher\\8fb6fe4c-832d-4747-8a8a-ea7671c1913c\\tasks\\afa653d25a8e0d4c3.output'","timestamp":"2026-03-17T16:51:24.993Z"},{"error":"ENOENT: no such file or directory, unlink 'C:\\Users\\mario\\AppData\\Local\\Temp\\claude\\C--Users-mario-Sources-dev-paywatcher\\8fb6fe4c-832d-4747-8a8a-ea7671c1913c\\tasks\\add30b3b22e997241.output'","timestamp":"2026-03-17T18:54:56.488Z"},{"error":"MaxFileReadTokenExceededError: File content (40995 tokens) exceeds maximum allowed tokens (25000). Use offset and limit parameters to read specific portions of the file, or search for specific content instead of reading the whole file.\n at FH8 (B:/~BUN/root/src/entrypoints/cli.js:1574:8051)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-03-17T18:54:58.823Z"},{"error":"ENOENT: no such file or directory, unlink 'C:\\Users\\mario\\AppData\\Local\\Temp\\claude\\C--Users-mario-Sources-dev-paywatcher\\8fb6fe4c-832d-4747-8a8a-ea7671c1913c\\tasks\\ae8ae188f6b05f778.output'","timestamp":"2026-03-17T19:10:56.319Z"},{"error":"ENOENT: no such file or directory, unlink 'C:\\Users\\mario\\AppData\\Local\\Temp\\claude\\C--Users-mario-Sources-dev-paywatcher\\8fb6fe4c-832d-4747-8a8a-ea7671c1913c\\tasks\\a813ff36b075ed7e3.output'","timestamp":"2026-03-17T19:22:32.023Z"},{"error":"ENOENT: no such file or directory, unlink 'C:\\Users\\mario\\AppData\\Local\\Temp\\claude\\C--Users-mario-Sources-dev-paywatcher\\8fb6fe4c-832d-4747-8a8a-ea7671c1913c\\tasks\\ac25e20d9a8992a67.output'","timestamp":"2026-03-17T19:22:37.830Z"},{"error":"ENOENT: no such file or directory, unlink 'C:\\Users\\mario\\AppData\\Local\\Temp\\claude\\C--Users-mario-Sources-dev-paywatcher\\8fb6fe4c-832d-4747-8a8a-ea7671c1913c\\tasks\\a57fe612b3dab7ee9.output'","timestamp":"2026-03-17T19:22:43.189Z"},{"error":"ENOENT: no such file or directory, unlink 'C:\\Users\\mario\\AppData\\Local\\Temp\\claude\\C--Users-mario-Sources-dev-paywatcher\\8fb6fe4c-832d-4747-8a8a-ea7671c1913c\\tasks\\a5dbe5faa278ded2d.output'","timestamp":"2026-03-17T19:22:48.015Z"},{"error":"ENOENT: no such file or directory, unlink 'C:\\Users\\mario\\AppData\\Local\\Temp\\claude\\C--Users-mario-Sources-dev-paywatcher\\8fb6fe4c-832d-4747-8a8a-ea7671c1913c\\tasks\\ada3652e0804f3b5c.output'","timestamp":"2026-03-17T19:22:54.925Z"},{"error":"Error: 500 {\"type\":\"error\",\"error\":{\"type\":\"api_error\",\"message\":\"Internal server error\"},\"request_id\":\"req_011CZ9DRVwgmr76K3mewcdDa\"}\n at generate (B:/~BUN/root/src/entrypoints/cli.js:466:9268)\n at makeRequest (B:/~BUN/root/src/entrypoints/cli.js:505:5435)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-03-17T19:36:30.083Z"}]
36 Comments
Same - too bad for our usage meters :(
https://status.claude.com/
Shows 100% operational. Right...
Same
Hey chat
Found 3 possible duplicate issues:
This issue will be automatically closed as a duplicate in 3 days.
🤖 Generated with Claude Code
This is getting #$%^&*( ridiculous...
yes API Error 500 again and again ... this is a regular occurrence on Anthropic infrastructure, they must be testing in prod ...
sameeeeeeeeeeeeeeeeee
lol
is this coygeek AI ? I have seen it comment everywhere lol
same here
Hey all
Same
same
Snack time
lmao
time to go touch grass everyone
same
I think the issue is related to the Opus model. I switched to Haiku, and the error went away.
some updates showed up https://status.claude.com
Chat, are we cooked?
~~Yep, I am also experiencing this issue, however it only seems to apply to subscription based login.~~
~~The API functions correctly when using API/non-subscription login method. It also is probably why the API is reported as healthy, despite having issues for Claude Code, due to some bug they've introduced related to OAuth.~~
Nevermind, on my other profile it was set to Sonnet.
Using Crush, the coding agent from charmbracelet seems to work with Claude Opus 4 selected, using my API key.
sonnet also working
I tried switching to Sonnet and it immediately compacted 🤦
i am sorry, for me it worked, can you /resume ?
Mental image of Jason Momoa trying to squeeze into a Honda Fit.
Thanks folks, we're aware of the service disruption. You can follow along here.
Still facing it currently - API Error: 529 {"type":"error","error":{"type":"overloaded_error","message":"Overloaded"},"request_id":"req_011CZA4sWgX5RTnYL5C4yDgt"}
+1
why was this closed? The issue has been going on for about 12 hours. the 500 is also not the 529 that has been intermittently happening for many since then. Is there something I don't understand about this process? As in why was the 529 overloaded closed and merged with this while this claims it's fixed but clearly by the comments it's not just me that still faces this.
This issue is definitely not resolved.
It works on my end if you switch the model. The issue seems to be specific to Opus 4.6.
it's back for me now aswell.
got the same issue
So the issue seems to be with Opus model only, you can check the status here https://status.claude.com/
Feature Suggestion: Route user complaints to SRE alerts
While dealing with repeated 529 errors, I realized that user messages like "why is the server down" or "529 again" are actually a real-time signal of infrastructure issues — potentially faster than formal monitoring.
A simple NLP classifier on the product side could detect frustration/error-related messages and:
User complaints are essentially free, real-time operational data. Would be great to put them to use rather than letting them go to waste.
This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.