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Anthropic's Claude Code bug routes commits with "HERMES.md" to extra billing

A peculiar bug in Anthropic's Claude Code has been discovered, where including the specific string "HERMES.md" in a Git commit message causes API requests to be billed under an "extra usage" category instead of the user's existing plan quota. This issue led one user to incur an unexpected $200.98 charge, rendering their projects unusable while their plan dashboard showed ample remaining capacity. The bug appears to be triggered by the commit message content itself, not the presence of a file named HERMES.md, and is difficult to diagnose due to misleading error messages. AI

IMPACT Unexpected billing issues could deter adoption of AI coding assistants if not promptly addressed.

RANK_REASON A specific bug in a product that causes unexpected billing and is difficult to diagnose.

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AI-generated summary · Google Gemini · from 4 sources. How we write summaries →

Anthropic's Claude Code bug routes commits with "HERMES.md" to extra billing

How we ranked this

Signal score
0 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Tool
A specific bug in a product that causes unexpected billing and is difficult to diagnose.
Source corroboration
4 independent sources
Strong cross-source corroboration — multiple independent publishers covered this within the clustering window.
Topics
product, safety
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High
Clearly on-topic for AI-industry coverage.
Story freshness
150 days old
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+1 source(s) since last score
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Full methodology in our editorial standards.

COVERAGE [4]

  1. HN — claude-code stories TIER_1 English(EN) · homebrewer ·

    HERMES.md in commit messages causes requests to route to extra usage billing

  2. Mastodon — fosstodon.org TIER_1 日本語(JA) · [email protected] ·

    Strange bug occurs where simply writing "HERMES.md" in the commit message incurs additional charges for Claude Code – GIGAZINE https://www.yayafa.com/2790445/ #AgenticAi #AI #Anthropic #AnthropicClaude #Artificial

    コミットメッセージに「HERMES.md」と書くだけでClaude Codeの追加課金が発生する奇妙なバグが発生 – GIGAZINE https://www. yayafa.com/2790445/ # AgenticAi # AI # Anthropic # AnthropicClaude # ArtificialGeneralIntelligence # ArtificialIntelligence # claude # エージェント型AI # 人工知能 # 汎用人工知能

  3. Mastodon — fosstodon.org TIER_1 日本語(JA) · [email protected] ·

    Google DeepMind Launches New Generation Research Agent "Deep Research Max" with MCP Support, Based on Gemini 3.1 Pro https://www.yayafa.com/2790443/ #AgenticAi #AI #ArtificialGeneralIntelligence

    Google DeepMind、MCP対応の新世代リサーチエージェント「Deep Research Max」提供開始 Gemini 3.1 Proベース https://www. yayafa.com/2790443/ # AgenticAi # AI # ArtificialGeneralIntelligence # ArtificialIntelligence # DeepMind # Gemini # Google # GoogleAI # GoogleDeepMind # GoogleGemini # エージェント型AI # ガジェット # ゲー…

  4. Mastodon — mastodon.social TIER_1 English(EN) · [email protected] ·

    HERMES.md: Anthropic bug causes $200 extra charge, refuses refund https://github.com/anthropics/claude-code/issues/53262 # HackerNews # Tech # AI

    HERMES.md: Anthropic bug causes $200 extra charge, refuses refund https://github.com/anthropics/claude-code/issues/53262 # HackerNews # Tech # AI