165 pages for signal.

multiagent-orchestration Claude Developer Platform · in the page managed-agents/multiagent-orchestration …dvisor thread's idle and terminated events, so don't treat those as a signal that the advice has already been delivered. Whether your client can read the advice is the advisor model's policy. It mirr… reference Claude Developer Platform · in the page managed-agents/reference …| | `agent.thinking` | Signals the agent is making forward progress through extended thinking. This is a progress signal only and does not carry the thin… spawn.sh: called once per claimed work item Claude Developer Platform · in the page managed-agents/self-hosted-sandboxes …ncio import contextlib import os import signal from anthropic import AsyncAnthropic from anthropic.lib.environments import EnvironmentWorker… self-hosted-sandboxes-custom-tools Claude Developer Platform · in the page managed-agents/self-hosted-sandboxes-custom-tools …entId, environmentKey, workdir: "/workspace", signal: controller.signal, tools: (ctx) => [...betaAgentToolset20260401(ctx), getOrderStatus] }).run(); ```… self-hosted-sandboxes-operations Claude Developer Platform · in the page managed-agents/self-hosted-sandboxes-operations …| `ant` CLI | Nothing. The CLI handles both signals itself: it cancels any in-flight tool call, posts its error result, and releases the work item. | | SDK worker that is… self-hosted-sandboxes-reference Claude Developer Platform · in the page managed-agents/self-hosted-sandboxes-reference …`AutoStop`) | Whether to post a stop signal for each work item once your loop body finishes with it. Set it to `false` (python: `False`; go: `param.NewOpt(false)`) whe… self-hosted-sandboxes-workers Claude Developer Platform · in the page managed-agents/self-hosted-sandboxes-workers …thon Python import asyncio import contextlib import os import signal from anthropic import AsyncAnthropic from anthropic.lib.environments import EnvironmentWorker async def main() -> N… tools Claude Developer Platform · in the page managed-agents/tools …as your library grows. * **Design tool responses to return only high-signal information.** Return semantic, stable identifiers (for example, slugs or UUIDs) rather than opaque internal references. In… webhooks Claude Developer Platform · in the page managed-agents/webhooks …ing per-memory events; the single `memory_store.deleted` event is the signal. There is no object left to fetch, so treat the event itself as final. | Individual [memories](https://platform.claude… claude-fable-5 Claude Developer Platform · in the page release-notes/system-prompts/claude-fable-5 …lly reframing a request to make it appropriate, that reframing is the signal to REFUSE, not a reason to proceed with the request. - For content directed at a minor, Claude MUST NOT supply unstated ass… claude-fable-5-1 Claude Developer Platform · in the page release-notes/system-prompts/claude-fable-5-1 …lly reframing a request to make it appropriate, that reframing is the signal to REFUSE, not a reason to proceed with the request. - For content directed at a minor, Claude MUST NOT supply unstated ass… claude-haiku-4-5 Claude Developer Platform · in the page release-notes/system-prompts/claude-haiku-4-5 …aming a request to make it appropriate, the impulse to reframe is the signal to REFUSE, not a reason to proceed with the request. - For content directed at a minor, Claude MUST NOT supply unstated ass… claude-opus-4-7 Claude Developer Platform · in the page release-notes/system-prompts/claude-opus-4-7 …lly reframing a request to make it appropriate, that reframing is the signal to REFUSE, not a reason to proceed with the request. - For content directed at a minor, Claude MUST NOT supply unstated ass… claude-opus-4-8 Claude Developer Platform · in the page release-notes/system-prompts/claude-opus-4-8 …lly reframing a request to make it appropriate, that reframing is the signal to REFUSE, not a reason to proceed with the request. - For content directed at a minor, Claude MUST NOT supply unstated ass… claude-opus-5 Claude Developer Platform · in the page release-notes/system-prompts/claude-opus-5 …lly reframing a request to make it appropriate, that reframing is the signal to REFUSE, not a reason to proceed with the request. - For content directed at a minor, Claude MUST NOT supply unstated ass… claude-opus-5-5 Claude Developer Platform · in the page release-notes/system-prompts/claude-opus-5-5 …lly reframing a request to make it appropriate, that reframing is the signal to REFUSE, not a reason to proceed with the request. - For content directed at a minor, Claude MUST NOT supply unstated ass… claude-sonnet-4-6 Claude Developer Platform · in the page release-notes/system-prompts/claude-sonnet-4-6 …lly reframing a request to make it appropriate, that reframing is the signal to REFUSE, not a reason to proceed with the request. - For content directed at a minor, Claude MUST NOT supply unstated ass… claude-sonnet-5 Claude Developer Platform · in the page release-notes/system-prompts/claude-sonnet-5 …aming a request to make it appropriate, the impulse to reframe is the signal to REFUSE, not a reason to proceed with the request. - For content directed at a minor, Claude MUST NOT supply unstated ass… develop-tests Claude Developer Platform · in the page test-and-evaluate/develop-tests …*Prioritize volume over quality:** More questions with slightly lower signal automated grading is better than fewer questions with high-quality human hand-graded evals. ### Example evals <AccordionG… handle-streaming-refusals Claude Developer Platform · in the page test-and-evaluate/strengthen-guardrails/handle-streaming-refusals …ilt only on error rates won't surface it. Track refusals as their own signal. * **Refusals include structured detail.** On every model, a refusal also includes a `stop_details` object that identifies… Use Claude Code features in the SDK Claude Code CLI · in the page agent-sdk/claude-code-features …being intercepted # context: HookContext, reserved for future abort-signal support async def audit_bash(input_data, tool_use_id, context): command = input_data.get("tool_input", {}).get("command… Give Claude custom tools Claude Code CLI · in the page agent-sdk/custom-tools …(#return-structured-data). * `isError` (optional): set to `true` to signal a tool failure so Claude can react to it. See [Handle errors](#handle-errors). After defining a tool, wrap it in a server… Intercept and control agent behavior with hooks Claude Code CLI · in the page agent-sdk/hooks …type const protectEnvFiles: HookCallback = async (input, toolUseID, { signal }) => { // Cast input to the specific hook type for type safety const preInput = input as PreToolUseHookInput; // Ca… Hosting the Agent SDK Claude Code CLI · in the page agent-sdk/hosting …o your collector. The example below enables OTLP export for all three signals. `CLAUDE_CODE_ENHANCED_TELEMETRY_BETA` is required only for traces; omit it if you export metrics and logs alone. ```bash… Observability with OpenTelemetry Claude Code CLI · in the page agent-sdk/observability …the object you pass. The CLI exports three independent OpenTelemetry signals. Each has its own enable switch and its own exporter, so you can turn on only the ones you need. | Signal | What it conta… Agent SDK reference - Python Claude Code CLI · in the page agent-sdk/python …ntil and including a ResultMessage | | `interrupt()` | Send interrupt signal (only works in streaming mode) | | `set_permission_mode(mode)` | Change the permission mode for the current session | | `se… Troubleshoot the Agent SDK Claude Code CLI · in the page agent-sdk/troubleshooting …pass a `stderr` callback in the query options. A process killed by a signal reports `Claude Code process terminated by signal <name>` in the same form. ### Claude Code returned an error result Both… Agent SDK reference - TypeScript Claude Code CLI · in the page agent-sdk/typescript …dels) | | `onElicitation` | `(request: ElicitationRequest, options: { signal: AbortSignal }) => Promise<ElicitationResult>` | `undefined` | Callback for handling MCP elicitation requests. Called when… Handle approvals and user input Claude Code CLI · in the page agent-sdk/user-input …eTool = async (toolName, input, options) => { // options includes { signal: AbortSignal, suggestions?: PermissionUpdate[] } // Prompt the user here, then return allow or deny return { behavior:… Manage multiple agents with agent view Claude Code CLI · in the page agent-view …ted silently, without writing an error and without being stopped by a signal, and the host reported low memory at that moment. When the process did write an error before exiting, the row shows that er… Best practices for Claude Code Claude Code CLI · in the page best-practices …work looks done. Without a check it can run, "looks done" is the only signal available, and you become the verification loop: every mistake waits for you to notice it. Give Claude something that produ… Champion kit Claude Code CLI · in the page champion-kit …post two or three of your own examples with the prompts included. **Signal that it is working:** a few colleagues react or reply, and at least one question is asked in the channel. **2. Week 2: Sta… Channels reference Claude Code CLI · in the page channels-reference …g) => ctrl.enqueue(chunk) listeners.add(emit) req.signal.addEventListener('abort', () => listeners.delete(emit)) }, }) return new Response(stream, { hea… Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry Claude Code CLI · in the page claude-apps-gateway …oints at the gateway itself. * With no destination configured for a signal, the gateway accepts and discards it. * If you already collect Claude Code telemetry directly, add your collector as a `f… Claude apps gateway configuration Claude Code CLI · in the page claude-apps-gateway-config …(#telemetry) and `listen.public_url`. Claude Desktop exports every signal with one encoding: `http/protobuf`, or `http/json` when you set `OTEL_EXPORTER_OTLP_PROTOCOL` or one of its per-signal vari… Claude apps gateway deployment and operations Claude Code CLI · in the page claude-apps-gateway-deploy …w_cidrs` is empty. The gateway serves the request as usual; the event signals that the gateway may be reachable from the public internet. See the [`access_control` reference](/docs/en/claude-apps-gate… Deploy Claude apps gateway on AWS Claude Code CLI · in the page claude-apps-gateway-on-aws …reference](/docs/en/claude-apps-gateway-config#telemetry) for the per-signal fields and their sensitivity tradeoffs. The gateway doesn't buffer, aggregate, or store telemetry, so where the data lands… Code Review Claude Code CLI · in the page code-review …triggers, manual triggers run on draft PRs, since an explicit request signals you want the review now regardless of draft status. If a review is already running on that PR, the request is queued unti… Communications kit Claude Code CLI · in the page communications-kit …ek activation than the same message from an admin or tooling team. It signals a company priority rather than an optional experiment. This version is deliberately stripped to one ask: install it and r… Run Claude Code behind a corporate launcher Claude Code CLI · in the page corporate-launcher …able set runs every process unwrapped and keeps working, and the only signal is a warning in the [debug log](/docs/en/troubleshooting.md). If your launcher policy covers Windows, the variable doesn't… Environment variables Claude Code CLI · in the page env-vars …utes with no turn or subagent running. Windows has no memory-pressure signal, so this variable has no effect there. Requires Claude Code v2.1.193 or later… Run Claude Code programmatically Claude Code CLI · in the page headless …in the middle of a command or waiting on a permission prompt when the signal arrived, Claude Code handles that step as follows: * **Running a command**: Claude Code records the command as killed in t… Hooks reference Claude Code CLI · in the page hooks …` #### Exit code 2 behavior per event Exit code 2 is the way a hook signals "stop, don't do this." The effect depends on the event, because some events represent actions that can be blocked (like a… Set up Claude Code in a monorepo or large codebase Claude Code CLI · in the page large-codebases …, a teammate starting Claude in an unfamiliar part of the tree has no signal about which plugin that area's owners maintain. A [`SessionStart` hook](/docs/en/hooks#sessionstart) can close that gap, si… Control MCP server access for your organization Claude Code CLI · in the page managed-mcp …anaged-policy) | When a server silently disappears, the user gets no signal that policy is the reason, so tell affected users which servers are blocked when you roll out a new restriction. ## Monito… Connect Claude Code to tools via MCP Claude Code CLI · in the page mcp …de disconnects a stdio server, for example when your session ends, it signals the server process and waits briefly for it to exit before forcing it to stop. If your server saves state or removes lock… Monitoring Claude Code CLI · in the page monitoring-usage …eir shell or `~/.claude/settings.json`. A repository can still turn a signal off by setting its exporter selector, such as `OTEL_LOGS_EXPORTER`, to `none`, unless managed settings, a `--settings` file… Choose a permission mode Claude Code CLI · in the page permission-modes …classifier treats boundaries you state in the conversation as a block signal. If you tell Claude "don't push" or "wait until I review before deploying", the classifier blocks matching actions even whe… Test plugins with evals Claude Code CLI · in the page plugin-evals …to choose the judge yourself. #### Choose graders that give a stable signal An `llm` grader asks a model for a verdict, so its answer can differ between runs, and it differs more the longer the text… Host and maintain a marketplace Claude Code CLI · in the page plugins/host-marketplace …n a project matches it, add a `relevance` block to the entry with the signals that identify the project. Users see suggestions from your marketplace only when an admin lists it in `pluginSuggestionMar…