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errors Changed · +18 / -0 lines

### Permission prompt tool returned an invalid result

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332332| `MCP server "<name>" connection closed before the tool call was answered` | [Tool errors](#connection-closed-before-the-tool-call-was-answered) |
333333| `MCP server "<name>" is disabled — re-enable it via /mcp to use its tools` | [Tool errors](#mcp-server-is-disabled) |
334334| `MCP server "<name>" tool "<tool>" timed out after <N>s. The server asked the user a question, and no answer came before the time limit.` | [Tool errors](#mcp-tool-call-timed-out-with-the-servers-question-unanswered) |
335| `Permission prompt tool returned an invalid result` | [Tool errors](#permission-prompt-tool-returned-an-invalid-result) |
335336| `would be spawned with zero tools — refusing` | [Tool errors](#agent-would-be-spawned-with-zero-tools) |
336337| `File is covered by a Read deny rule in your permission settings` | [Tool errors](#file-is-covered-by-a-read-deny-rule) |
337338| `<path> is outside <dirs>; the permissions.blockWritesOutsideWorkingDirectories setting blocks writes outside the working directories` | [Tool errors](#setting-blocks-writes-outside-the-working-directories) |
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25032504 
25042505* Resize the image before pasting. The API accepts images up to 8000 pixels on the longest edge for a single image, or 3000 pixels when more than 20 images are in context.
25052506* Take a tighter screenshot of the relevant region instead of the full screen
2506* For the `dimension limit for many-image requests` message, run `/compact` at the Claude Code prompt if the message names it, or start a new session with fewer images
2507 
2508The `dimension limit for many-image requests` message shows the pixel limit named in the API's error.
2509 
2510### Unable
2507* For the `dimension limit for many-image requests` message, run `/compact` at the Claude Code prompt if the message names it, or start a new session with fewe

tools-reference Changed · +5 / -1 lines

#### Addresses and hosts denied to WebSocket watches

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413413 
414414Without a `Monitor` allow rule, you're prompted before Claude opens a WebSocket; in [auto mode](https://code.claude.com/docs/en/permission-modes.md#eliminate-prompts-with-auto-mode) the classifier decides instead, unless an [ask rule](#bash-rules-that-deny-or-prompt-for-websocket-watches) applies. The prompt doesn't offer an option to skip future prompts for the same host.
415415 
416Claude Code denies URLs that point at a private, link-local, or cloud-metadata address, including hostnames that resolve to one. It also denies hosts in `sandbox.network.deniedDomains`, and when [`allowManagedDomainsOnly`](https://code.claude.com/docs/en/settings-reference#sandbox-network-allowmanageddomainsonly) is set in managed settings, any host outside the managed allowlist.
416#### Addresses and hosts denied to WebSocket watches
417 
418Claude Code denies URLs that point at a private, link-local, or cloud-metadata address, including hostnames that your machine resolves to one. Behind a [proxy](https://code.claude.com/docs/en/network-config.md#proxy-configuration), a watch can reach a private, link-local, or cloud-metadata address unless the proxy blocks it, because Claude Code doesn't check the address the proxy finds. Claude Code also denies hosts in `sandbox.network.deniedDomains`, and when [`allowManagedDomainsOnly`](https://code.claude.com/docs/en/settings-reference#sandbox-network-allowmanageddomainsonly) is set in managed settings, any host outside the managed allowlist.
419 
420If a watch behind a proxy fails with `could not resolve <host>`, restart Claude Code v2.1.319 or later with [`CLAUDE_CODE_PROXY_RESOLVES_HOSTS`](https://code.claude.com/docs/en/env-vars#variables) set to `1` so the proxy looks up the hostname.
417421 
418422#### Bash rules that deny or prompt for WebSocket watches
419423 

cli-reference Changed · +1 / -1 lines

from line 107
107107| `--no-session-persistence` | Disable session persistence so sessions are not saved to disk and cannot be resumed. Print mode only. The [`CLAUDE_CODE_SKIP_PROMPT_HISTORY`](https://code.claude.com/docs/en/env-vars) environment variable does the same in any mode | `claude -p --no-session-persistence "query"` |
108108| `--output-format` | Specify output format for print mode (options: `text`, `json`, `stream-json`) | `claude -p "query" --output-format json` |
109109| `--permission-mode` | Begin in a specified [permission mode](https://code.claude.com/docs/en/permission-modes.md). Accepts `default`, `acceptEdits`, `plan`, `auto`, `dontAsk`, `bypassPermissions`, or `manual` as an alias for `default`. The `manual` alias selects the permission mode the UI labels Manual and requires Claude Code v2.1.200 or later; `claude --help` lists it in place of `default`, and both values work. Overrides `defaultMode` from settings files. Without this flag or `--dangerously-skip-permissions`, a new session starts in the permission mode described in [which permission mode a session starts in](https://code.claude.com/docs/en/permission-modes.md#which-mode-a-session-starts-in), which also covers what a `-p` run starts in | `claude --permission-mode plan` |
110| `--permission-prompt-tool` | Specify an MCP tool to handle permission prompts in non-interactive mode. Pass the full name, such as `mcp__<server>__<tool>`, of a tool on an MCP server that the run loads. Claude Code waits for that tool's MCP server to connect before running the first turn, up to the [`MCP_TIMEOUT`](https://code.claude.com/docs/en/env-vars) startup timeout, 30 seconds by default. The prompt tool can't approve an MCP tool marked as [requiring user interaction](https://code.claude.com/docs/en/mcp.md#require-approval-for-a-specific-tool): Claude Code converts an `allow` result for one to a deny. This restriction requires Claude Code v2.1.199 or later | `claude -p --mcp-config ./mcp.json --permission-prompt-tool mcp__permissions__approve "query"` |
110| `--permission-prompt-tool` | Specify an MCP tool to handle permission prompts in non-interactive mode. Pass the full name, such as `mcp__<server>__<tool>`, of a tool on an MCP server that the run loads. Claude Code waits for that tool's MCP server to connect before running the first turn, up to the [`MCP_TIMEOUT`](https://code.claude.com/docs/en/env-vars) startup timeout, 30 seconds by default. See [what the tool must return](https://code.claude.com/docs/en/errors.md#permission-prompt-tool-returned-an-invalid-result). The prompt tool can't approve an MCP tool marked as [requiring user interaction](https://code.claude.com/docs/en/mcp.md#require-approval-for-a-specific-tool): Claude Code converts an `allow` result for one to a deny. This restriction requires Claude Code v2.1.199 or later | `claude -p --mcp-config ./mcp.json --permission-prompt-tool mcp__permissions__approve "query"` |
111111| `--permission-prompts` | Set who answers permission prompts in print mode. With the default `host`, Claude Code sends them to the Agent SDK host or the `--permission-prompt-tool` tool. Pass `none` when nobody can answer, and Claude Code denies them instead. See [Turn off permission prompts in unattended runs](https://code.claude.com/docs/en/headless.md#turn-off-permission-prompts-in-unattended-runs). Requires Claude Code v2.1.259 or later | `claude -p --permission-prompts none "query"` |
112112| `--plugin-dir` | Load a plugin from a directory or `.zip` archive, or several from a [folder of plugins](https://code.claude.com/docs/en/plugins/create.md#load-a-directory-or-archive-for-one-session), for this session only. Each flag takes one path. Repeat the flag for more paths: `--plugin-dir A --plugin-dir B.zip`. Passing a folder of plugins requires Claude Code v2.1.265 or later | `claude --plugin-dir ./my-plugin` |
113113| `--plugin-url` | Fetch a plugin `.zip` archive from a URL for this session only. Repeat the flag for multiple plugins, or pass space-separated URLs in a single quoted value | `claude --plugin-url https://example.com/plugin.zip` |
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