Mods reference changedplugins/mods/reference
Nearest release: v2.1.306, published under an hour after upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Upstream edited this page at 21 Oct 2026 02:10 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 22 Oct 2026 18:07 UTC.
Upstream edited
Recorded here
Lines+37added
Lines−37removed
From line
2
where the diff opens
First seen
1 Oct 2026
this site's first read of the page
Recorded edits35to this page, all time
The whole hunk
from line 2, old and new numbered
/
from line 2
22
33> Complete reference for Claude Code mods: hooks module layout, events, mods API methods, render sites, elements by surface, limits, and settings.
44
5Look up any event a [mod](/docs/en/plugins/mods/overview) can handle, mods API method it can call, or render site it can draw in. Entries cover the Claude Code CLI and the Desktop app as of v2.1.290, and the VS Code extension as of v2.1.299. Each entry gives the name and a one-line description, and links to the guide section that explains it where there is one.
5Look up any event a [mod](/docs/en/plugins/mods/overview.md) can handle, mods API method it can call, or render site it can draw in. Entries cover the Claude Code CLI and the Desktop app as of v2.1.290, and the VS Code extension as of v2.1.299. Each entry gives the name and a one-line description, and links to the guide section that explains it where there is one.
66
77> [!NOTE]
88>
9> The complete reference is Claude Code's [TypeScript declarations for mods](https://github.com/anthropics/claude-code/blob/main/mods/types/claude-code.d.ts), which describe every event, method, and element, with examples. The copy on GitHub can be older than the Claude Code version you have installed. When the two disagree, trust [the copy Claude Code writes for your version](/docs/en/plugins/mods/create#get-the-types-for-your-build).
9> The complete reference is Claude Code's [TypeScript declarations for mods](https://github.com/anthropics/claude-code/blob/main/mods/types/claude-code.d.ts), which describe every event, method, and element, with examples. The copy on GitHub can be older than the Claude Code version you have installed. When the two disagree, trust [the copy Claude Code writes for your version](/docs/en/plugins/mods/create.md#get-the-types-for-your-build).
1010
1111## Files
1212
from line 14
1414
1515| File | Required | Contents |
1616| :- | :- | :- |
17| `.claude-plugin/plugin.json` | Yes | The plugin [manifest](/docs/en/plugins/manifest-reference). Mods add no required fields. |
18| `hooks/hooks.json` | Yes | `modules`: an array with one path, relative to this file, to the hooks module, as in `"modules": ["./register.js"]`. Can also hold [settings hooks](/docs/en/hooks) under `hooks`. |
17| `.claude-plugin/plugin.json` | Yes | The plugin [manifest](/docs/en/plugins/manifest-reference.md). Mods add no required fields. |
18| `hooks/hooks.json` | Yes | `modules`: an array with one path, relative to this file, to the hooks module, as in `"modules": ["./register.js"]`. Can also hold [settings hooks](/docs/en/hooks.md) under `hooks`. |
1919| The hooks module, such as [`hooks/register.js`](/docs/en/plugins/mods/create#write-a-mod-yourself) | Yes | The mod's entry point. Exports `register(on, options)`. Named `.js`, `.mjs`, `.cjs`, `.jsx`, `.ts`, `.mts`, `.cts`, or `.tsx`. An ES module. |
2020| [`types/index.d.ts`](/docs/en/plugins/mods/interface#declare-the-values), named by `types` in the manifest | When the mod uses `$.state` or adds a namespace to the mods API | Declares `PluginState` values and any namespace the mod adds |
2121| Files whose names end in `.test.ts` or `.test.tsx` | No | Tests that [`claude plugin test`](/docs/en/plugins/mods/test#write-a-test) runs |
from line 24
2424
2525## The hook function
2626
27A mod registers each of its hooks, which are event handlers, by calling `on` inside `register`. `on` takes the event's name, an optional [matcher](/docs/en/plugins/mods/events#filter-which-events-a-hook-handles), which is a filter on the event's fields, and the hook, as in `on('tool.call', { tool: 'Bash' }, async ($, e, next) => next(e))`. `on` returns a registration with one method, `.catch(handler)`, which sets the hook's [error handler](/docs/en/plugins/mods/events#handle-a-hook-that-fails).
27A mod registers each of its hooks, which are event handlers, by calling `on` inside `register`. `on` takes the event's name, an optional [matcher](/docs/en/plugins/mods/events.md#filter-which-events-a-hook-handles), which is a filter on the event's fields, and the hook, as in `on('tool.call', { tool: 'Bash' }, async ($, e, next) => next(e))`. `on` returns a registration with one method, `.catch(handler)`, which sets the hook's [error handler](/docs/en/plugins/mods/events.md#handle-a-hook-that-fails).
2828
2929| Argument | What it is |
3030| :- | :- |
from line 32
3232| [`e`](/docs/en/plugins/mods/events#how-a-hook-handles-an-event) | The event's input, as deeply frozen plain data. To change it, pass a copy to `next`. |
3333| [`next(e)`](/docs/en/plugins/mods/events#how-a-hook-handles-an-event) | The next handler, as in middleware. Runs the hooks after this one, then Claude Code's behavior. Resolves to the event's result. |
3434| [`next.signal`](/docs/en/plugins/mods/api#stop-background-work) | An `AbortSignal` that aborts when the event is abandoned |
35| `next.origin` | `{ plugin, tier }` of whoever fired the event. Claude Code itself is `{ plugin: 'engine', tier: 'core' }`. A mod's `tier` is its priority group in the [order mods run in](/docs/en/plugins/mods/events#the-order-mods-run-in): `prepend`, `user`, `append`, or `builtin`. |
35| `next.origin` | `{ plugin, tier }` of whoever fired the event. Claude Code itself is `{ plugin: 'engine', tier: 'core' }`. A mod's `tier` is its priority group in the [order mods run in](/docs/en/plugins/mods/events.md#the-order-mods-run-in): `prepend`, `user`, `append`, or `builtin`. |
3636| `next.budget` | The hook's time limit in milliseconds: `next.budget.ms` is the whole limit, and `next.budget.remainingMs` is what's left now |
3737| `next.to(e, tier)` | Skips to a later tier, which is `append`, `builtin`, or `core`. `next.to(e, 'append')` skips the mods a user installed. Only a mod in `prependPlugins` or `appendPlugins` can call it. |
3838| `next.error` | In a `.catch` handler only. `kind` is `throw` or `timeout` when the hook failed, and `message` is the error's text. `kind` is `re-entry` when the hook was skipped because the event came from inside a mods API call by that hook or by your mod's code outside its hooks. `re-entry` requires Claude Code v2.1.292 or later. |
from line 53
5353| :- | :- | :- |
5454| [`tool.call`](/docs/en/plugins/mods/events#guard-or-change-a-tool-call) | A tool is about to run | `next(e)`, `{ deny: reason }`, or `{ result }` |
5555| [`tool.check`](/docs/en/plugins/mods/events#where-settings-hooks-run-in-the-order) | Claude Code decides whether a tool call may run, after the `tool.call` and `PreToolUse` hooks. `next(e)` resolves to the decision the rules, the permission mode, and those hooks reached. | `next(e)` or `{ decision }`, with `decision` set to `allow`, `ask`, or `deny` and an optional `reason` |
56| `tool.describe` | Once for each tool, when its description is first sent to Claude. A second time for an MCP tool when Claude loads it through [tool search](/docs/en/mcp#scale-with-mcp-tool-search), with `e.description` set to the text Claude reads for the loaded tool. | `{ description }`, optionally with `isDeferred` set to `true` to put the tool behind tool search or `false` to load it upfront |
56| `tool.describe` | Once for each tool, when its description is first sent to Claude. A second time for an MCP tool when Claude loads it through [tool search](/docs/en/mcp.md#scale-with-mcp-tool-search), with `e.description` set to the text Claude reads for the loaded tool. | `{ description }`, optionally with `isDeferred` set to `true` to put the tool behind tool search or `false` to load it upfront |
5757
5858#### Agent and organization fields on `tool.check`
5959
6060In a `tool.check` hook, read these fields to tell a subagent's call from the main conversation's, and to see whether your organization requires approval for a connector tool:
6161
62* **`e.agentId`**: set when a [subagent](/docs/en/sub-agents) or an [in-process teammate](/docs/en/agent-teams#choose-a-display-mode) makes the call, and absent when the main conversation does
63* **`e.ceiling`**: `ask` for a connector tool your organization set to `ask`, in [sessions where that setting reaches Claude Code](/docs/en/mcp#organization-controls-on-connector-tools)
62* **`e.agentId`**: set when a [subagent](/docs/en/sub-agents.md) or an [in-process teammate](/docs/en/agent-teams.md#choose-a-display-mode) makes the call, and absent when the main conversation does
63* **`e.ceiling`**: `ask` for a connector tool your organization set to `ask`, in [sessions where that setting reaches Claude Code](/docs/en/mcp.md#organization-controls-on-connector-tools)
6464
6565On `tool.check`, `e.agentId` and `e.ceiling` require Claude Code v2.1.290 or later.
6666
6767#### The `e.isReadOnly` field on `tool.check`
6868
69In a `tool.check` hook, `e.isReadOnly` is `true` when the tool reports this call as read-only. Otherwise the field is absent, not `false`. The value is the tool's own report, so read [Check whether a tool call is read-only](/docs/en/plugins/mods/events#check-whether-a-tool-call-is-read-only) before you approve a call on this field alone.
69In a `tool.check` hook, `e.isReadOnly` is `true` when the tool reports this call as read-only. Otherwise the field is absent, not `false`. The value is the tool's own report, so read [Check whether a tool call is read-only](/docs/en/plugins/mods/events.md#check-whether-a-tool-call-is-read-only) before you approve a call on this field alone.
7070
7171On `tool.check`, `e.isReadOnly` requires Claude Code v2.1.304 or later.
7272
from line 94
9494
9595| Field | Type | What it holds |
9696| :- | :- | :- |
97| `e.source` | string | Who provides the skill: `policySettings`, `userSettings`, or `projectSettings` for a skill in the enterprise, personal, or project [location](/docs/en/skills#where-skills-live), respectively. Other sources give a word such as `plugin`, `mcp`, `syncedSkills`, or `built-in`. |
97| `e.source` | string | Who provides the skill: `policySettings`, `userSettings`, or `projectSettings` for a skill in the enterprise, personal, or project [location](/docs/en/skills.md#where-skills-live), respectively. Other sources give a word such as `plugin`, `mcp`, `syncedSkills`, or `built-in`. |
9898| `e.pluginName` | string | The plugin's name, for a skill whose `e.source` is `plugin` |
99| `e.path` | string | The absolute path of the skill's `SKILL.md` file, or of its `.md` file for a skill written as a [command file](/docs/en/skills#where-skills-live). Absent when the skill has no file on this machine, as with a built-in skill. |
99| `e.path` | string | The absolute path of the skill's `SKILL.md` file, or of its `.md` file for a skill written as a [command file](/docs/en/skills.md#where-skills-live). Absent when the skill has no file on this machine, as with a built-in skill. |
100100| `e.frontmatter` | object | The frontmatter of the skill's file, as plain data |
101101| `e.frontmatterProblem` | string | The reason `e.frontmatter` is missing the file's frontmatter or one of its keys, as in `is a list or a single value, not a table`. Absent when `e.frontmatter` holds the whole frontmatter or the skill has none. |
102102
103A hook can pass a changed `text` or `frontmatter` to `next`: the hooks after it read both, and Claude reads the final `text`. A hook that changes any other field [fails](/docs/en/plugins/mods/events#handle-a-hook-that-fails).
103A hook can pass a changed `text` or `frontmatter` to `next`: the hooks after it read both, and Claude reads the final `text`. A hook that changes any other field [fails](/docs/en/plugins/mods/events.md#handle-a-hook-that-fails).
104104
105105On `skill.prompt`, `e.source`, `e.pluginName`, `e.path`, `e.frontmatter`, and `e.frontmatterProblem` require Claude Code v2.1.299 or later.
106106
from line 134
134134| [`session.start`](/docs/en/plugins/mods/api#add-a-command-or-a-tool) | Once for each loaded mod, before the first prompt, and again after a reload of that mod. Not after `/clear`, `/resume`, or `/branch`. | `next(e)` |
135135| `session.end` | The session ends, or `/clear`, `/resume`, or `/branch` runs. `e.reason` is `clear`, `resume`, `logout`, `prompt_input_exit`, or `other`. `/branch` reports `resume`. | `next(e)` |
136136| `session.compact` | The conversation is about to be compacted | `{ skip: reason }` |
137| [`session.receive`](/docs/en/plugins/mods/api#send-and-receive-messages-between-sessions), [`session.send`](/docs/en/plugins/mods/api#send-and-receive-messages-between-sessions) | A message arrives from, or is about to go to, another agent or session. See [Send and receive messages between sessions](/docs/en/plugins/mods/api#send-and-receive-messages-between-sessions). | `{ consumed: reason }` for `receive`, `{ isDelivered: false, reason }` for `send` |
137| [`session.receive`](/docs/en/plugins/mods/api#send-and-receive-messages-between-sessions), [`session.send`](/docs/en/plugins/mods/api#send-and-receive-messages-between-sessions) | A message arrives from, or is about to go to, another agent or session. See [Send and receive messages between sessions](/docs/en/plugins/mods/api.md#send-and-receive-messages-between-sessions). | `{ consumed: reason }` for `receive`, `{ isDelivered: false, reason }` for `send` |
138138| `session.append` | Once for each row the conversation keeps, such as a prompt, a response block, a tool result, or a notice, before it's stored | `next({ ...e, message })` with a changed `message.content`, to rewrite the row's text blocks or the `content` of a `tool_result` block in it |
139139| `session.attach`, `session.detach` | Another app connects to or disconnects from the session | `next(e)` |
140140| `session.measure` | After each turn, and when a plan limit's percent used changes | `next(e)` |
from line 146
146146| Event | Fires when | A hook can return |
147147| :- | :- | :- |
148148| `agent.offer` | A subagent type is offered to Claude | `{ isOffered: false }` to withhold it |
149| `agent.spawn` | A subagent or an [agent team](/docs/en/agent-teams) teammate is about to start. For a teammate, `e.isTeammate` is `true`. | `next({ ...e, model })` to choose its model, or `{ deny: reason }` |
149| `agent.spawn` | A subagent or an [agent team](/docs/en/agent-teams.md) teammate is about to start. For a teammate, `e.isTeammate` is `true`. | `next({ ...e, model })` to choose its model, or `{ deny: reason }` |
150150
151151When Claude resumes a subagent with the [`SendMessage`](/docs/en/sub-agents#resume-subagents) tool, your `agent.spawn` hook doesn't run again. To refuse the `SendMessage` calls that resume a subagent, match that tool in a [`tool.call`](/docs/en/plugins/mods/events#guard-or-change-a-tool-call) hook.
152152
153153### Interface
154154
155Interface events fire when Claude Code draws a render site and when the user uses a control a mod drew. [Draw in the interface](/docs/en/plugins/mods/interface) shows what a `ui.render` hook returns:
155Interface events fire when Claude Code draws a render site and when the user uses a control a mod drew. [Draw in the interface](/docs/en/plugins/mods/interface.md) shows what a `ui.render` hook returns:
156156
157157| Event | Fires when |
158158| :- | :- |
from line 185
185185
186186### Settings hook events
187187
188Each [settings hook event](/docs/en/hooks#hook-events) is an event named `classic.<Event>`, such as `classic.Stop` or `classic.PostToolUse`. `e` is the hook's stdin JSON.
188Each [settings hook event](/docs/en/hooks.md#hook-events) is an event named `classic.<Event>`, such as `classic.Stop` or `classic.PostToolUse`. `e` is the hook's stdin JSON.
189189
190190### Mods API calls
191191
from line 193
193193
194194## Mods API methods
195195
196The mods API is the `$` argument every hook receives. Its methods are grouped in namespaces, such as `$.ui`. This table lists each namespace's methods by name, so `open` in the `$.ui` row is the call `$.ui.open(...)`. The guides show the common ones in use, and [the types for your build](/docs/en/plugins/mods/create#get-the-types-for-your-build) document every method with an example.
196The mods API is the `$` argument every hook receives. Its methods are grouped in namespaces, such as `$.ui`. This table lists each namespace's methods by name, so `open` in the `$.ui` row is the call `$.ui.open(...)`. The guides show the common ones in use, and [the types for your build](/docs/en/plugins/mods/create.md#get-the-types-for-your-build) document every method with an example.
197197
198198| Namespace | Methods |
199199| :- | :- |
from line 210
210210| [`$.settings`](/docs/en/plugins/mods/api#reach-files-processes-and-the-network) | `read` |
211211| [`$.env`](/docs/en/plugins/mods/api#reach-files-processes-and-the-network) | `get`, `set` |
212212| [`$.fs`](/docs/en/plugins/mods/api#reach-files-processes-and-the-network) | `read`, `write`, `list`, `exists`, `stat`, `ancestors`. `write` isn't atomic: it replaces the file's content in place, so another process can read a partly written file. Keep data that several sessions change in `$.store`. |
213| [`$.store`](/docs/en/plugins/mods/interface#keep-state) | `get`, `set`, `delete`, `keys`. A key-value store that every session on the machine shares. See [Save from more than one session](/docs/en/plugins/mods/interface#save-from-more-than-one-session). |
213| [`$.store`](/docs/en/plugins/mods/interface#keep-state) | `get`, `set`, `delete`, `keys`. A key-value store that every session on the machine shares. See [Save from more than one session](/docs/en/plugins/mods/interface.md#save-from-more-than-one-session). |
214214| [`$.state`](/docs/en/plugins/mods/interface#keep-a-value-in-\$-state) | Reactive state: `get`, `set`, with the helpers `atom`, `read`, `update`, `derive`, and `memberOf` imported from `claude-code` |
215215| [`$.clock`](/docs/en/plugins/mods/api#run-work-in-the-background) | `now`, `sleep`, `after`, `every` |
216216| [`$.http`](/docs/en/plugins/mods/api#reach-files-processes-and-the-network) | `fetch` |
from line 221
221221
222222## Render sites
223223
224A render site is an extension point in Claude Code's interface. Each row is a value of `e.component` in a `ui.render` hook, with the fields of `e.props` and the apps that render it. `e.surface` names the app that's drawing, such as `terminal`, `desktop`, or `vscode`. [Change what Claude Code already draws](/docs/en/plugins/mods/interface#change-what-claude-code-already-draws) shows what a hook can do at a site, with an example of each choice.
224A render site is an extension point in Claude Code's interface. Each row is a value of `e.component` in a `ui.render` hook, with the fields of `e.props` and the apps that render it. `e.surface` names the app that's drawing, such as `terminal`, `desktop`, or `vscode`. [Change what Claude Code already draws](/docs/en/plugins/mods/interface.md#change-what-claude-code-already-draws) shows what a hook can do at a site, with an example of each choice.
225225
226Rendering in the VS Code extension requires extension version 2.1.299 or later. A session that [doesn't fetch feature flags](/docs/en/env-vars#features-that-need-feature-flag-fetching) needs 2.1.304 or later. [Draw in the VS Code extension](/docs/en/plugins/mods/interface#draw-in-the-vs-code-extension) lists what the extension draws differently.
226Rendering in the VS Code extension requires extension version 2.1.299 or later. A session that [doesn't fetch feature flags](/docs/en/env-vars.md#features-that-need-feature-flag-fetching) needs 2.1.304 or later. [Draw in the VS Code extension](/docs/en/plugins/mods/interface.md#draw-in-the-vs-code-extension) lists what the extension draws differently.
227227
228228| Site | `e.props` | `e.requestId` | Rendered on |
229229| :- | :- | :- | :- |
from line 253
253253
254254## Elements
255255
256Elements are the building blocks of a tree a `ui.render` hook returns, and you get them from `$.ui.resolve(e)`. [Build a tree from elements](/docs/en/plugins/mods/interface#build-a-tree-from-elements) shows the common ones with how the terminal draws them, and the [interface gallery](/docs/en/plugins/mods/gallery) has screenshots of most. A check mark means the app can draw the element.
256Elements are the building blocks of a tree a `ui.render` hook returns, and you get them from `$.ui.resolve(e)`. [Build a tree from elements](/docs/en/plugins/mods/interface.md#build-a-tree-from-elements) shows the common ones with how the terminal draws them, and the [interface gallery](/docs/en/plugins/mods/gallery.md) has screenshots of most. A check mark means the app can draw the element.
257257
258258| Element | Main props | Terminal | Desktop | VS Code |
259259| :- | :- | :-: | :-: | :-: |
from line 267
267267| `Select` | `key`, `label`, `options`, `value`, `onSelect`, `autoFocus` | ✓ | ✓ | ✓ |
268268| `Svg` | An SVG document, up to 131,072 characters | | ✓ | ✓ |
269269| [`Client`](/docs/en/plugins/mods/interface#build-a-tree-from-elements) | `module`, `key` | ✓ | ✓ | |
270| [`Raster`](/docs/en/plugins/mods/interface#draw-a-grid-of-colored-cells) | `key`, `columns` up to 512, `rows` up to 256, `cells`. See [Draw a grid of colored cells](/docs/en/plugins/mods/interface#draw-a-grid-of-colored-cells). | ✓ | | |
271| `Image` | PNG or RGBA bytes up to 2 MiB, or a file path, `columns` and `rows` up to 255, and `alt` text. See [which terminals draw it](/docs/en/plugins/mods/gallery#image-and-client). | ✓ | | |
270| [`Raster`](/docs/en/plugins/mods/interface#draw-a-grid-of-colored-cells) | `key`, `columns` up to 512, `rows` up to 256, `cells`. See [Draw a grid of colored cells](/docs/en/plugins/mods/interface.md#draw-a-grid-of-colored-cells). | ✓ | | |
271| `Image` | PNG or RGBA bytes up to 2 MiB, or a file path, `columns` and `rows` up to 255, and `alt` text. See [which terminals draw it](/docs/en/plugins/mods/gallery.md#image-and-client). | ✓ | | |
272272
273More `Button` rules: `action` names one of Claude Code's own [keybinding actions](/docs/en/keybindings), and the user's binding for it presses the button when that binding is a chord or a modified key. A digit `hotkey` on a button in the band also fires when the user types that digit alone into an empty prompt and pauses. When two buttons in one drawing name the same `hotkey`, the later one gets it. `autoFocus` accepts only `true` on any control, so omit the prop to leave it off.
273More `Button` rules: `action` names one of Claude Code's own [keybinding actions](/docs/en/keybindings.md), and the user's binding for it presses the button when that binding is a chord or a modified key. A digit `hotkey` on a button in the band also fires when the user types that digit alone into an empty prompt and pauses. When two buttons in one drawing name the same `hotkey`, the later one gets it. `autoFocus` accepts only `true` on any control, so omit the prop to leave it off.
274274
275275The VS Code extension ignores some element props and draws the element as if you had left them out:
276276
from line 313
313313
314314If you set `gap`, `padding`, or `margin` to a step, the step applies across and down at once. For example, in the terminal and the VS Code extension, `padding: 'md'` is two cells at each side and one row above and below.
315315
316Step names require Claude Code v2.1.299 or later. On an earlier release, Claude Code [draws its own version of the site](/docs/en/plugins/mods/interface#build-a-tree-from-elements) in place of a tree that uses a step name.
316Step names require Claude Code v2.1.299 or later. On an earlier release, Claude Code [draws its own version of the site](/docs/en/plugins/mods/interface.md#build-a-tree-from-elements) in place of a tree that uses a step name.
317317
318318### `Text` typography props
319319
from line 326
326326| `mono` | `true` to ask for the app's monospaced typeface | Ignored: the terminal is always monospaced | Ignored, so text keeps the extension's own typeface |
327327| `tabular` | `true` to ask for digits of equal width, so that a number that updates in place or a column of numbers stays aligned | Ignored: the terminal's digits are already one cell wide | Ignored |
328328
329These four props require Claude Code v2.1.299 or later. On an earlier release, Claude Code [draws its own version of the site](/docs/en/plugins/mods/interface#build-a-tree-from-elements) in place of a tree that sets `size`, `weight`, `mono`, or `tabular`.
329These four props require Claude Code v2.1.299 or later. On an earlier release, Claude Code [draws its own version of the site](/docs/en/plugins/mods/interface.md#build-a-tree-from-elements) in place of a tree that sets `size`, `weight`, `mono`, or `tabular`.
330330
331331#### Replace `bold` with `weight`
332332
333333`bold` on a `Text` is deprecated in favor of `weight` and still works. To replace it on a `Text` with no `weight`, change `bold: true` to `weight: 'semibold'` for the same result on Claude Code v2.1.299 or later.
334334
335On a release earlier than v2.1.299, a tree that sets `weight` doesn't draw, and Claude Code [draws its own version of the site](/docs/en/plugins/mods/interface#build-a-tree-from-elements) instead. If you set both `bold` and `weight` on a `Text`, `bold` has no effect.
335On a release earlier than v2.1.299, a tree that sets `weight` doesn't draw, and Claude Code [draws its own version of the site](/docs/en/plugins/mods/interface.md#build-a-tree-from-elements) instead. If you set both `bold` and `weight` on a `Text`, `bold` has no effect.
336336
337337## Limits
338338
from line 342
342342| :- | :- |
343343| A hook's own execution time for one event, not counting time inside `next` or a mods API call other than `$.clock.sleep` | 10 seconds, or 50 milliseconds for a `prompt.edit` hook |
344344| A `.catch` handler's execution time | 1 second |
345| All `session.end` hooks together | As long as the [SessionEnd hook budget](/docs/en/hooks#sessionend-input), 1.5 seconds unless you change it, counted from when your settings `SessionEnd` hooks finish |
345| All `session.end` hooks together | As long as the [SessionEnd hook budget](/docs/en/hooks.md#sessionend-input), 1.5 seconds unless you change it, counted from when your settings `SessionEnd` hooks finish |
346346| `$.process.run` timeout | 30 seconds by default, 10 minutes at most |
347347| `$.model.complete` `maxTokens` | 1024 by default, up to 64,000 or the model's output limit |
348348| `$.fs.read` and `$.fs.write` | 4 MiB for one file |
from line 350
350350| A `$.http.fetch` response body | 4 MiB. `text` holds the first 4 MiB and the rest isn't read. When the `Content-Length` header declares more, the call rejects instead, with a reason that ends `is over the 4194304-byte limit`, except when the last request after any redirects uses the `HEAD` method. The `HEAD` exemption requires Claude Code v2.1.296 or later. |
351351| One `$.http.fetch` call, redirects and body included | 30 seconds |
352352| Redirects one `$.http.fetch` call follows | 5 |
353| A hook's `drop` reason or `config.set` `deny` reason | 4,096 characters. The end of a longer reason is cut, and the drop or deny still applies. The cut requires Claude Code v2.1.292 or later, and on earlier versions the hook [fails](/docs/en/plugins/mods/events#handle-a-hook-that-fails) instead. |
353| A hook's `drop` reason or `config.set` `deny` reason | 4,096 characters. The end of a longer reason is cut, and the drop or deny still applies. The cut requires Claude Code v2.1.292 or later, and on earlier versions the hook [fails](/docs/en/plugins/mods/events.md#handle-a-hook-that-fails) instead. |
354354| Text in one tree | The first 100,000 characters are drawn |
355| A `Code`'s `language` or `path`, a `Select` option's `value`, or a `Client`'s `module` | 10,000 characters. If one is longer, Claude Code [draws its own version of the site](/docs/en/plugins/mods/interface#build-a-tree-from-elements). |
355| A `Code`'s `language` or `path`, a `Select` option's `value`, or a `Client`'s `module` | 10,000 characters. If one is longer, Claude Code [draws its own version of the site](/docs/en/plugins/mods/interface.md#build-a-tree-from-elements). |
356356| A `Link`'s `href` | 2,048 characters. A longer `href` keeps the whole tree from drawing. |
357357| `$.store` | 4 MiB of JSON in total |
358358| `$.session.messages()` | The newest 4,096 entries |
from line 371
371371| :- | :- | :- |
372372| `CLAUDE_CODE_PLUGIN_DIRS` | Environment, or `env` in `~/.claude/settings.json` | Plugin directories to load as `--plugin-dir` does, for apps you can't pass a flag to. Absolute paths separated by `:`, or `;` on Windows. |
373373| `CLAUDE_CODE_PLUGIN_DIR_WATCH` | Environment | `1` makes a long-running non-interactive session reload `--plugin-dir` mods on save |
374| `prependPlugins`, `appendPlugins` | Managed settings. User settings only on a machine with no managed settings, in a session whose credential isn't a Team or Enterprise `/login`. | Lists of plugin ids, such as `acme-guard@acme-tools`. Mods in `prependPlugins` run before every mod a user installs, and mods in `appendPlugins` run after, in the listed order. See [The order mods run in](/docs/en/plugins/mods/events#the-order-mods-run-in). |
375| `allowManagedModsOnly` | Managed settings, as an [option on the built-in guard](/docs/en/plugins/mods/admin#set-options-on-the-built-in-guard) | Only mods that [count as your organization's](/docs/en/plugins/mods/admin#install-your-organizations-mods), and mods built into Claude Code, run their hooks. Users' settings hooks keep running. |
376| `allowModsToOverrideDenyRules` | Managed settings, as an [option on the built-in guard](/docs/en/plugins/mods/admin#set-options-on-the-built-in-guard) | Lets a mod a user installed approve a tool call that a `deny` rule refuses |
377| `allowManagedHooksOnly` | Managed settings | Blocks hooks and installed mods that aren't your organization's. See [what keeps running](/docs/en/settings-reference#what-runs-under-allowmanagedhooksonly). |
374| `prependPlugins`, `appendPlugins` | Managed settings. User settings only on a machine with no managed settings, in a session whose credential isn't a Team or Enterprise `/login`. | Lists of plugin ids, such as `acme-guard@acme-tools`. Mods in `prependPlugins` run before every mod a user installs, and mods in `appendPlugins` run after, in the listed order. See [The order mods run in](/docs/en/plugins/mods/events.md#the-order-mods-run-in). |
375| `allowManagedModsOnly` | Managed settings, as an [option on the built-in guard](/docs/en/plugins/mods/admin.md#set-options-on-the-built-in-guard) | Only mods that [count as your organization's](/docs/en/plugins/mods/admin.md#install-your-organizations-mods), and mods built into Claude Code, run their hooks. Users' settings hooks keep running. |
376| `allowModsToOverrideDenyRules` | Managed settings, as an [option on the built-in guard](/docs/en/plugins/mods/admin.md#set-options-on-the-built-in-guard) | Lets a mod a user installed approve a tool call that a `deny` rule refuses |
377| `allowManagedHooksOnly` | Managed settings | Blocks hooks and installed mods that aren't your organization's. See [what keeps running](/docs/en/settings-reference.md#what-runs-under-allowmanagedhooksonly). |
378378| `disableAllHooks` | Any settings file | In managed settings, no mod or hook from an installed plugin runs. In your own settings, what your organization manages keeps running. See [`disableAllHooks`](/docs/en/settings-reference#disableallhooks). |
379379| `disableSideloadFlags` | Managed settings | Rejects `--plugin-dir` and `--plugin-url` at startup |
380380| `pluginConfigs` | User or managed settings | Holds `userConfig` values for a mod, keyed by the plugin's id, such as `acme-guard@acme-tools`, or its name and `@inline`, such as `first-mod@inline`, for one loaded with `--plugin-dir` |
No line in this hunk matches that.