34 pages for presence.

Log at info level Claude Developer Platform · in the page agents-and-tools/tool-use/tool-runner …a response has no tool calls, so condition any state mutation on the presence of a `tool_use` block. ```csharp var runner = client.Beta.Messages.ToolRunner( new MessageCreateParams… tool-use-with-prompt-caching Claude Developer Platform · in the page agents-and-tools/tool-use/tool-use-with-prompt-caching …docs/en/agents-and-tools/tool-use/computer-use-tool) | Screenshot presence affects messages cache; `cache_control` goes on the toolset entry (see [cache\_control on tool definitions](https://platf… Beta Claude Developer Platform · in the page api/beta …signal for whether a fallback model served the response is the presence of a `fallback_message` entry in `usage.iterations`, not this block. The block is treated like a server-tool… Messages Claude Developer Platform · in the page api/beta/messages …signal for whether a fallback model served the response is the presence of a `fallback_message` entry in `usage.iterations`, not this block. The block is treated like a server-tool… Batches Claude Developer Platform · in the page api/beta/messages/batches …l for whether a fallback model served the response is the presence of a `fallback_message` entry in `usage.iterations`, not this block. The block is treated like a… Retrieve Message Batch results Claude Developer Platform · in the page api/beta/messages/batches/results …l for whether a fallback model served the response is the presence of a `fallback_message` entry in `usage.iterations`, not this block. The block is treated like a… Create a Message Claude Developer Platform · in the page api/beta/messages/create …signal for whether a fallback model served the response is the presence of a `fallback_message` entry in `usage.iterations`, not this block. The block is treated like a server-tool… Apps Claude Developer Platform · in the page api/compliance/apps …is never included. The request's `system` field is never included; a presence-only marker message is emitted when it was set. The request's `tools[]` definitions are never included as transcript mess… Sessions Claude Developer Platform · in the page api/compliance/apps/sessions …is never included. The request's `system` field is never included; a presence-only marker message is emitted when it was set. The request's `tools[]` definitions are never included as transcript mess… Local Claude Developer Platform · in the page api/compliance/apps/sessions/local …is never included. The request's `system` field is never included; a presence-only marker message is emitted when it was set. The request's `tools[]` definitions are never included as transcript mess… Messages Claude Developer Platform · in the page api/compliance/apps/sessions/local/messages …is never included. The request's `system` field is never included; a presence-only marker message is emitted when it was set. The request's `tools[]` definitions are never included as transcript mess… Retrieve local session messages Claude Developer Platform · in the page api/compliance/apps/sessions/local/messages/list …is never included. The request's `system` field is never included; a presence-only marker message is emitted when it was set. The request's `tools[]` definitions are never included as transcript mess… service-tiers Claude Developer Platform · in the page api/service-tiers …iority-output-tokens-reset: 2025-01-12T23:12:21Z ``` You can use the presence of these headers to detect if your request was eligible for Priority Tier, even if it was over the limit. ## Existing Pr… Request 2 caches its request content (not the response) Claude Developer Platform · in the page build-with-claude/prompt-caching …part of the prompt diverged <Note> Changes to `tool_choice` or the presence/absence of images anywhere in the prompt will invalidate the cache, requiring a new cache entry to be created. For more d… thinking Claude Developer Platform · in the page build-with-claude/thinking …being enabled. To confirm whether thinking was active, check for the presence of `thinking` blocks in the response. **Toggle between turns, not within them.** Plan your thinking strategy at the star… thinking-steering-and-cost Claude Developer Platform · in the page build-with-claude/thinking-steering-and-cost …nd without the guidance, and compare how often thinking triggers (the presence of thinking blocks in responses), output token usage, latency, and answer quality on the cases that matter to you. <Warn… openai-sdk Claude Developer Platform · in the page cli-sdks-libraries/libraries/openai-sdk …| | `presence_penalty` | Ignored… go Claude Developer Platform · in the page cli-sdks-libraries/sdks/go …sidered omitted. The `param.IsOmitted(any)` function can confirm the presence of any `omitzero` field. ```go p := anthropic.ExampleParams{ ID: "id_xxx", // required property Name:… inference-hooks-endpoint Claude Developer Platform · in the page manage-claude/inference-hooks-endpoint …t empty today. Require nothing from it, and tolerate its absence, its presence, and any keys that appear.… claude-sonnet-4-6 Claude Developer Platform · in the page release-notes/system-prompts/claude-sonnet-4-6 …that might pull the person deeper. Claude can be a calm, stabilizing presence that actively helps the person get the help they need. Claude should not make categorical claims about the confidentiali… Channels reference Claude Code CLI · in the page channels-reference …/channel']` | `object` | Required. Always `{}`. Presence registers the notification listener.… Environment variables Claude Code CLI · in the page env-vars …| | `CLAUDE_CLIENT_PRESENCE_FILE` | Path to a file that an external tool, such as a screen-lock listener, creates when you… Continue local sessions from any device with Remote Control Claude Code CLI · in the page remote-control …n 18 hours old. Instead of signing in again each day, members confirm presence with Face ID, Touch ID, Windows Hello, or a passkey. This biometric step-up refreshes the session immediately. Biometric… Self-hosted environments reference Claude Code CLI · in the page self-hosted-environments-reference …SKIP_GIT_VERIFY` | unset | When `1`, skip the `.git` presence check after a `checkout` hook runs. Set this when your hook materializes a non-git source.… Week 25 · June 15–19, 2026 Claude Code CLI · in the page whats-new/2026-w25 …send Apple Events on macOS</div> <div>Point <code>CLAUDE\_CLIENT\_PRESENCE\_FILE</code> at a marker file to suppress mobile push notifications while you're at the machine</div> <div>Long parag… Remote compute clusters Claude Documentation · in the page claude-science/remote-compute-clusters …runs a read-only probe that records CPUs, memory, GPUs, CUDA driver, presence of conda/modules/Apptainer, scratch directories, and whether `sbatch` exists. On SLURM clusters it reads partitions. Resu… Control when Claude Tag responds Claude Documentation · in the page claude-tag/users/when-claude-responds …* **Claude**, the name alone: the reply comes from Claude's ambient presence in the channel, including unprompted replies * **Claude** followed by a short description of the task in square brackets:… Tenant restrictions Claude Documentation · in the page government/tenant-admin/tenant-restrictions …ude for Government side. The restriction is activated entirely by the presence of the header on the request, so it takes effect the moment your proxy begins injecting it and only for traffic that pass… MCP, plugins, skills, and hooks Claude Documentation · in the page third-party/claude-desktop/extensions …nly administrators can create or modify it. Claude Desktop treats the presence of this directory as an admin-provisioned source. ### Plugin structure Each subdirectory of `org-plugins/` is one plugi… Network proxy Claude Documentation · in the page third-party/claude-desktop/network-proxy …managed-settings file alongside Claude Desktop on 3P: without it, the presence of that file makes Claude Code ignore the policy Claude Desktop supplies (network and filesystem sandbox, allowed MCP ser… Roadmap Model Context Protocol · in the page development/roadmap …n and may come into scope as the Working Group forms, including human-presence attestation for distinguishing interactive clients from headless agents and other agent identity concerns. ### 4. Improv… Authorization Model Context Protocol · in the page specification/2025-11-25/basic/authorization …ommonly included by OpenID providers. MCP clients **MUST** verify the presence of `code_challenge_methods_supported` in the provider metadata response. If the field is absent, MCP clients **MUST** ref… Authorization Security Considerations Model Context Protocol · in the page specification/2026-07-28/basic/authorization/security-considerations …ommonly included by OpenID providers. MCP clients **MUST** verify the presence of `code_challenge_methods_supported` in the provider metadata response. If the field is absent, MCP clients **MUST** ref… Authorization Security Considerations Model Context Protocol · in the page specification/draft/basic/authorization/security-considerations …ommonly included by OpenID providers. MCP clients **MUST** verify the presence of `code_challenge_methods_supported` in the provider metadata response. If the field is absent, MCP clients **MUST** ref…