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hermes - 💡(How to fix) Fix CLI: long pasted multi-line messages silently dropped / never delivered [1 participants]

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NousResearch/hermes-agent#17666•Fetched 2026-04-30 06:46:09
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When pasting long multi-line text (e.g., a code review, PR description, or formatted feedback) into a Hermes CLI session, the message sometimes vanishes — the agent never receives it. The user sees their paste appear in the terminal, but the message is lost before reaching the model.

Root Cause

When pasting long multi-line text (e.g., a code review, PR description, or formatted feedback) into a Hermes CLI session, the message sometimes vanishes — the agent never receives it. The user sees their paste appear in the terminal, but the message is lost before reaching the model.

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Description

When pasting long multi-line text (e.g., a code review, PR description, or formatted feedback) into a Hermes CLI session, the message sometimes vanishes — the agent never receives it. The user sees their paste appear in the terminal, but the message is lost before reaching the model.

Reproduction

  1. Start a hermes CLI session (macOS, iTerm2, deepseek-v4-pro via direct provider)
  2. Paste a long multi-line message (several hundred words, structured text with code blocks, markdown, etc.)
  3. Press Enter

Observed: the message disappears. The agent shows no acknowledgment. If the user asks "did you get my message?" the agent has no record of it.

Expected: the message is processed like any other input.

Context

This happened multiple times in a single long session (~50+ turns). Shorter messages (1-2 lines) always worked. The dropped messages were typically 500-2000 words of structured review feedback.

Session was a CLI session on macOS with a long conversation history. Toolsets enabled: terminal, file, web, delegation, session_search, skills, memory, clarify, todo.

extent analysis

TL;DR

The issue can be mitigated by splitting long multi-line text into smaller chunks before pasting into the Hermes CLI session.

Guidance

  • Verify that the issue only occurs with long multi-line text (500-2000 words) and not with shorter messages.
  • Try pasting the text in smaller chunks (e.g., a few paragraphs at a time) to see if the message is processed correctly.
  • Check if the issue is specific to the deepseek-v4-pro provider or if it occurs with other providers as well.
  • Investigate if there are any limitations or character limits on the input text in the Hermes CLI session.

Example

No code snippet is provided as it is not directly relevant to the issue.

Notes

The root cause of the issue is unclear, but it may be related to input handling or character limits in the Hermes CLI session. Further investigation is needed to determine the exact cause.

Recommendation

Apply workaround: Split long multi-line text into smaller chunks before pasting into the Hermes CLI session. This is a temporary solution until the root cause of the issue can be determined and fixed.

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hermes - 💡(How to fix) Fix CLI: long pasted multi-line messages silently dropped / never delivered [1 participants]