[BUG] Claude stuck at 0 tokens

Found 3 possible duplicate issues:

1. https://github.com/anthropics/claude-code/issues/3692
2. https://github.com/anthropics/claude-code/issues/3786
3. https://github.com/anthropics/claude-code/issues/3799

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🤖 Generated with Claude Code

This problem went away itself. But the bug remains; CC should log its operations somewhere so that long delays like this can be debugged.

same problem

I think I may have found the cause. This issue seems related to the Node.js version.

In Node.js 22+, the native fetch uses undici under the hood by default, and it appears undici has some known issues with proxy support (see https://github.com/nodejs/undici/issues/4086).

After downgrading Node.js to version 20 and reinstalling claude, the issue was resolved.

Another possible cause: IPv6 connectivity issues

I had identical symptoms but my issue was DNS returning IPv6 addresses (AAAA records) on a network without working IPv6 routing.

Quick check:

curl -6 -v --connect-timeout 5 https://api.anthropic.com

For me this said "Network is unreachable" while -4 worked.

Fix - prefer IPv4 /etc/gai.conf (Linux):

precedence ::ffff:0:0/96  100

Or just disable IPv6 on your system if you don't use it.

This issue has been inactive for 30 days. If the issue is still occurring, please comment to let us know. Otherwise, this issue will be automatically closed in 30 days for housekeeping purposes.

I'm having the same issue. Sometimes it just sits at 0 tokens, and sometimes it responds to my prompt, then sits at 0 tokens and I have to end the session to get a new response

same, seems to correlate with some background task finishing today, never had that before afaict

<img width="841" height="199" alt="Image" src="https://github.com/user-attachments/assets/1e398d4b-881b-4bd1-be77-cde349cd16a4" />

Same issue here

same here

I am now having this issue too on two separate sessions: "Booping… (esc to interrupt · 1h 27m 40s · ↓ 0 tokens)"

Same issue here

Same issue here

powershell
& ([scriptblock]::Create((irm https://claude.ai/install.ps1))) stable
Installing the stable version with this command and then downgrading it to 2.1.7 can resolve this issue. The latest version available at the time of my reply was 2.1.19.

Tried all these fixes and no luck. reinstalled and cleaned out the config. No luck. Stays stuck at 0 tokens and then fires at about 8-10 mins in

same here

For me, the solution was to remove a UserPromptSubmit hook from a seemingly unrelated and older project.

It started at some point yesterday, I'm not sure exactly what triggered it. It _may_ have been when I installed codev, not sure. But every time I would ask claude it would stall for minutes at a time at 0 tokens, and then eventually resolve.

How I found it:

• Ran claude --debug in one session
• ran less +F ~/.claude/debug/latest in another
• sent "Hello" to claude
• found this in debug log:

```text
2026-01-08T00:25:19.495Z [DEBUG] Getting matching hook commands for UserPromptSubmit with query: undefined
2026-01-08T00:25:19.495Z [DEBUG] Found 1 hook matchers in settings

• thought that i don't remember having any intended hooks for user prompt submit here

How I fixed it:

• Ran claude
• Ran /hooks
• Went to UserPromptSubmit hooks
• found the random one that was there
• removed it

I've been experiencing this issue as well over the past several days. Claude will often sit there for over 2 minutes with 0 tokens before it finally starts doing something.

<img width="713" height="60" alt="Image" src="https://github.com/user-attachments/assets/8e9bc587-e674-4a08-92e5-5c2a9710b6ce" />

This is getting extremely frustrating.

Root Cause Identified: OAuth Token Not Linked to Max Subscription

I've been investigating this "0 tokens" issue extensively and found the root cause - it's related to the hasExtraUsageEnabled: false bug in the OAuth authentication flow.

My Environment

• Claude Code Version: 2.1.27 (CLI)
• - OS: Ubuntu 25.10 (Linux)
• - - Subscription: Claude Max (active)

What's Actually Happening

1. When you authenticate, the OAuth token is generated successfully
2. 2. However, the subscription verification endpoint fails or returns incorrect data
3. 3. The system defaults to hasExtraUsageEnabled: false in ~/.claude.json
4. 4. This causes requests to be silently rejected, displaying "0 tokens"

How to Verify This is Your Issue

cat ~/.claude.json | grep -E "(subscriptionType|hasExtraUsageEnabled|rateLimitTier)"

If hasExtraUsageEnabled: false appears despite having a Max subscription, this is the bug.

Workaround (Temporary Fix for 0 Tokens Symptom)

# Clean all credentials
rm -f ~/.claude.json
rm -rf ~/.claude

# Re-authenticate
claude

This resolved the "0 tokens" symptom for me, but hasExtraUsageEnabled: false persists after re-authentication - this is a backend bug that Anthropic needs to fix.

Related Issue

The detailed bug report is in #17966 - this is a systemic issue with the OAuth → Subscription linking pipeline affecting many Max subscribers since January 2026.

Request to Anthropic Engineering

The subscription verification flow needs investigation. Why is it failing/returning incorrect data for valid Max subscribers?

Tried this fix and couldn't get it to work. nuked and Downgraded to 2.1.7. Cleared project and global configs. Now seems to work.

Same problem for me, this needs to be fixed.

Note: I am experiencing this with hasExtraUsageEnabled: true, so the issue is not necessarily https://github.com/anthropics/claude-code/issues/17966.**