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12161216### Bedrock streaming response has an unexpected content-type
12171217
1218A gateway or proxy between Claude Code and [Amazon Bedrock](/docs/en/amazon-bedrock) is transforming the streaming response body or its `Content-Type` header. Amazon Bedrock streams responses as `application/vnd.amazon.eventstream`, and Claude Code rejects a successful streaming response that reports a different content-type instead of decoding a body it can't read. The request isn't retried.
1218A gateway or proxy between Claude Code and [Amazon Bedrock](/docs/en/amazon-bedrock) is transforming the streaming response body or its `Content-Type` header. Amazon Bedrock streams responses as `application/vnd.amazon.eventstream`. Rather than decode a body it can't read, Claude Code rejects a successful streaming response that reports a different content-type. Claude Code doesn't retry the request.
12191219
12201220```text theme={null}
12211221Bedrock streaming response has content-type "text/event-stream"; expected "application/vnd.amazon.eventstream". A gateway or proxy between Claude Code and Bedrock is likely transforming the response body — Bedrock's binary event-stream format must be passed through unmodified. Set CLAUDE_CODE_DISABLE_BEDROCK_CONTENT_TYPE_GUARD=1 to suppress this check while the gateway is being fixed.
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12261226**What to do:**
12271227
12281228* Configure the gateway to pass the `InvokeModelWithResponseStream` response body and its `Content-Type` header through unmodified. An intermediary that re-emits the stream as server-sent events is a common cause.
1229* If the gateway rewrites only the header and passes the binary body through intact, set [`CLAUDE_CODE_DISABLE_BEDROCK_CONTENT_TYPE_GUARD=1`](/docs/en/env-vars) to skip the check until the gateway is fixed. See [Streaming errors behind a gateway or proxy](/docs/en/amazon-bedrock#streaming-errors-behind-a-gateway-or-proxy).
1229* Setting [`CLAUDE_CODE_DISABLE_BEDROCK_CONTENT_TYPE_GUARD=1`](/docs/en/env-vars) hides this error, but Claude Code doesn't decode a binary body under a rewritten header, so those requests fall back to a slower non-streaming path. See [Streaming errors behind a gateway or proxy](/docs/en/amazon-bedrock#streaming-errors-behind-a-gateway-or-proxy).
12301230
12311231### SSL certificate errors
12321232
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17471747Send feedback with /feedback or learn more: https://www.anthropic.com/legal/aup
17481748```
17491749
1750The message names the model that declined, or `Claude` when no model is recorded. In [non-interactive mode](/docs/en/headless) (`-p`), the final line reads `Learn more:` followed by the link, without the `/feedback` mention.
1750The message names the model that declined, or `Claude` when no model is recorded.
17511751
17521752The check evaluates the full conversation, not only your latest prompt, so sending a new message in the same session usually re-triggers the same refusal. The same applies after exiting and reopening the session with `--continue` or `--resume`, since the transcript on disk still contains the triggering content. On [Amazon Bedrock](/docs/en/amazon-bedrock), [Google Cloud's Agent Platform](/docs/en/google-vertex-ai), and [Microsoft Foundry](/docs/en/microsoft-foundry), this message also covers requests the model's safety measures flagged as a cybersecurity topic. See [Safety measures flagged a cybersecurity topic](#safety-measures-flagged-a-cybersecurity-topic).
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17701770The message links to the [Cyber Verification Program](https://support.claude.com/en/articles/14604842-real-time-cyber-safeguards-on-claude), which grants access for legitimate cybersecurity work.
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1772What you see depends on your provider and mode:
1772On [Amazon Bedrock](/docs/en/amazon-bedrock), [Google Cloud's Agent Platform](/docs/en/google-vertex-ai), and [Microsoft Foundry](/docs/en/microsoft-foundry), a cybersecurity flag produces the [Usage Policy refusal](#usage-policy-refusal) message instead.
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1774* On [Amazon Bedrock](/docs/en/amazon-bedrock), [Google Cloud's Agent Platform](/docs/en/google-vertex-ai), and [Microsoft Foundry](/docs/en/microsoft-foundry), a cybersecurity flag produces the [Usage Policy refusal](#usage-policy-refusal) message instead.
1775* In [non-interactive mode](/docs/en/headless), the final sentence reads `Learn more:` followed by the link, without the `/feedback` mention.
1776
17771774The safeguard itself is server-side and predates v2.1.203; client releases since then have changed only the message's wording.
17781775From v2.1.203 through v2.1.218, the message read `<model> has safety measures that flagged this message for a cybersecurity topic. To learn about the Cyber Verification Program and apply for access, visit our help center:` followed by the same help-center link, and interactive sessions appended `If you were not engaging in a cybersecurity topic, please send feedback via /feedback.`
17791776Before v2.1.203, it read `<model>'s safeguards flagged this message for a cybersecurity topic. If your work requires this access, you can apply for an exemption:` followed by an exemption form link.
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21332130Claude Code suggests the closest command name or alias that the menu lists in this session. When nothing is close, the message ends after the name. The cause is usually one of the following:
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21352132* A typo, such as `/hepl` for `/help`. [How the command menu matches what you type](/docs/en/commands#how-the-command-menu-matches-what-you-type) covers picking a close match before you submit
2136* A command that exists but isn't available in this session because a requirement isn't met, such as your platform, plan, or authentication method. The troubleshooting entries for [`/web-setup`](/docs/en/web-quickstart#web-setup-shows-no-commands-match-or-unknown-command) and [`/schedule`](/docs/en/routines#schedule-returns-unknown-command) walk through two common cases
2133* A command that exists but isn't available in this session because a requirement isn't met, such as your platform, plan, or authentication method. The troubleshooting entries for [`/web-setup`](/docs/en/web-quickstart#web-setup-shows-no-commands-match-or-unknown-command) and [`/schedule`](/docs/en/routines#schedule-returns-unknown-command) walk through two common cases. Some commands answer with their own message when your organization's policy disables them
21372134* A command from a [plugin](/docs/en/plugins) or [MCP server](/docs/en/mcp#use-mcp-prompts-as-commands) that isn't installed or connected in this session
21382135
2136Claude Code doesn't treat every prompt that starts with `/` as a command. It sends the prompt to Claude as a normal message when the first word after the `/` starts with punctuation, such as the `/--` that opens a Lean doc comment, or is a path such as `/var/log/syslog`.
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21392138Before v2.1.236, if you pressed `Enter` while the command menu listed a near match for the name you typed, Claude Code ran that match, so a typo such as `/hepl` ran `/help` instead of producing this message.
21402139
21412140**What to do:**
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23932392* The URL serves a different file than the author pinned
23942393
23952394```text theme={null}
2396Plugin archive integrity check failed for https://artifacts.example.com/claude-plugins/my-plugin.zip: expected sha256 6bfa50e3d2e00c052b46abe51fff89346ac803e45771f76dcf6df1ab74cca5e1, got ac52220c0914ef8ca6a602e4a
2395Plugin archive integrity check failed for https://artifacts.example.com/claude-plugins/my-plugin.zip: expected sha256 6bfa50e3d2e00c052b46abe51fff89346ac