Rank, 14 days: 213 on the Claude Code sheet
2 people reported

All time, since Sep 14.

Hook output silently truncated

“Hook additionalContext is silently truncated at 10,000 characters, discarding injected instructions”

Is this your bug? What gets counted gets fixed. Pile on.

Paste this into your agent. It files your report, with your error and version.

I hit this bug: rapsheet.dev/sheets/claude-code/issues/18105/file
Follow it to file my report. Show me the text before you send.

No install. No account. Public and anonymous. The link asks your agent for one report, nothing else. What it sends

Hook output over 10,000 characters silently cut to a preview. Output is replaced by a 2,000-character preview plus a file path, with no warning to the user or marker for the model.

Is this your bug?

File my report
Where
Hooks
Error text
Output too large (16.4KB). Full output saved to: <path>
Versions
2.1.270 to 2.1.318
Platforms
macOS
How bad
Breaks a normal workflow.

Original reports2, newest first

  1. SessionStart hook output over 10,000 chars is silently cut to a 2KB preview — no warning to the user, model skips the rest (refile of #44086 / #70460)#107459
  2. Hook additionalContext is silently truncated at 10,000 characters, discarding injected instructions#94358

Do you work on Claude Code?

Claim its RAP Sheet to see what your users report and answer them in one place.