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認証・ログイン 14

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• API Error: Could not load AWS credentials Claude Code
• API Error: Could not load Google Cloud credentials Claude Code
• Failed to authenticate. API Error: 401 API key is invalid. Claude Code
• Failed to authenticate. API Error: 401 OAuth access token is invalid. Claude Code
• Failed to authenticate: OAuth session expired and could not be refreshed Claude Code
• Invalid API key · Fix external API key Claude Code
• Not logged in · Please run /login Claude Code
• Your apiKeyHelper script is failing Claude Code
• unexpected status 401 Unauthorized: Missing bearer or basic authentication in header Codex CLI
• Error: Authentication failed (Request ID: <id>) GitHub Copilot CLI
• Error: Authentication token found but could not be validated. GitHub Copilot CLI
• Error: Classic Personal Access Tokens (ghp_) are not supported by Copilot. GitHub Copilot CLI
• API key not valid. Please pass a valid API key. Gemini CLI
• Please set an Auth method in your <path>/settings.json Gemini CLI

利用枠・課金・混雑 9

• API Error: 500 Internal server error Claude Code
• API Error: Repeated 529 Overloaded errors Claude Code
• Claude Opus is not available with the Claude Pro plan Claude Code
• Credit balance is too low Claude Code
• Request rejected (429) Claude Code
• Server is temporarily limiting requests Claude Code
• Usage credits required for 1M context Claude Code
• Waiting for API response · will retry in Claude Code
• You've hit your session limit Claude Code

接続・ネットワーク 4

• Request timed out Claude Code
• Socket is closed Claude Code
• SSL certificate verification failed Claude Code
• Unable to connect to API Claude Code

設定ファイル・モデル指定 10

• Could not read Claude Code config — run `claude` with no arguments to recover it. Claude Code
• Model ... is not a recognized model id Claude Code
• Error: Settings file exceeds the 2MiB limit Claude Code
• Error: Settings file not found: <path> Claude Code
• Error loading configuration: <path>/config.toml Codex CLI
• Error parsing -c overrides: Invalid override (missing '='): <key> Codex CLI
• Error: Model provider `<name>` not found Codex CLI
• --profile `<name>` cannot be used while <path> contains legacy `[profiles.<name>]` config Codex CLI
• Error: --profile only applies to runtime commands and `codex mcp` Codex CLI
• Error in <path>/settings.json: Unexpected end of JSON input Gemini CLI

MCP・プラグイン・スキル 8

• Skill <name> requires bash (`shell: bash` in frontmatter) but Git Bash was not found Claude Code
• Error: invalid server name '<name>' (use letters, numbers, '-', '_', ':', '@', '/', '.') Codex CLI
• No MCP server named '<name>' found. Codex CLI
• Error: plugin requires --marketplace unless passed as <plugin>@<marketplace> Codex CLI
• Error: Command is required for local servers. GitHub Copilot CLI
• Failed to add skill: Path does not exist: <path> GitHub Copilot CLI
• Error: Failed to read configuration from <path>: Error: mcpServers: Required GitHub Copilot CLI
• Error: URL is required for remote servers (http/sse). GitHub Copilot CLI

権限・信頼・サンドボックス 8

• Error: Workspace not trusted Claude Code
• File is covered by a Read deny rule in your permission settings Claude Code
• error: option '--permission-mode <mode>' argument '<value>' is invalid Claude Code
• pkill: refusing to run Claude Code
• Transcript writes are failing Claude Code
• error: invalid value '<value>' for '--sandbox <SANDBOX_MODE>' Codex CLI
• Not inside a trusted directory and --skip-git-repo-check was not specified. Codex CLI
• Gemini CLI is not running in a trusted directory. Gemini CLI

長さ・サイズの上限 3

• Error during compaction: Conversation too long Claude Code
• Image was too large Claude Code
• Request too large for the API's 32MB request limit Claude Code

Git・作業ツリー 3

• Error: Can only use --worktree in a git repository Claude Code
• Could not find merge-base with <branch> Claude Code
• Your checkout has no branches (detached HEAD only) Claude Code

インストール・起動・コマンドの使い方 7

• blocked because the path is network-shaped Claude Code
• Could not locate the Claude CLI on PATH Claude Code
• Input must be provided either through stdin or as a prompt argument when using --print Claude Code
• Installation was killed before it could finish (exit code 137) Claude Code
• Unknown command: /<name> Claude Code
• Error: stdin is not a terminal Codex CLI
• error: Invalid command format. GitHub Copilot CLI