878 pages for check.

claude-prompting-best-practices Claude Developer Platform · in the page build-with-claude/prompt-engineering/claude-prompting-best-practices …que names a specific model, treat it as measured on that model and re-check it against your own evals before applying it to another. ### Be clear and direct Claude responds well to clear, explicit i… prompting-claude-fable-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-fable-5 …indicators before migrating, and consider restructuring harnesses to check on runs asynchronously, for example through scheduled jobs, rather than blocking. To keep Claude Fable 5 from overplanning w… Delivering work Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-fable-5-1 …ge that covers only the last step rather than the whole task. First, check that your client receives progress updates at all. The model’s short notes between tool calls, what it just found and what i… Finishing work Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-fable-5-2 …conversations only. On Claude Fable 5.2, the API enforces the [prefix check](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#prefix-check) for every account. A request that se… prompting-claude-haiku-5-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-haiku-5-5 …-in-long-agent-prompts) * Code changes are reported as done without a check that exercises them: [Tell coding agents to verify their changes](https://platform.claude.com/docs/en/build-with-claude/prom… prompting-claude-opus-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-opus-5 …ked, at the scope intended. Make routine judgment calls yourself, and check in only when different readings of the request would lead to materially different work. If the request seems mistaken or a b… prompting-claude-opus-5-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-opus-5-5 …laude Opus 5 only when thinking is disabled. With thinking always on, check whether you still need the instruction, and remove the no-thinking rule either way. * **Read the response by block type.** C… prompting-claude-sonnet-5-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-sonnet-5-5 …ng/prompting-claude-sonnet-5-5#calibrate-effort) * The model stops to check in before a coding task is done, or does more than you asked: [Steer initiative and scope](https://platform.claude.com/docs/… refusals-and-fallback Claude Developer Platform · in the page build-with-claude/refusals-and-fallback …ording can sit in a system prompt, a skill, or a tool description, so check those too. You can still ask Claude to explain its answer. Ask for a short explanation, the evidence behind a result, or a… search-results Claude Developer Platform · in the page build-with-claude/search-results …", text="If you encounter timeout errors, first check the configuration settings. Common causes include network latency and incorrect timeout values.", )… skills-guide Claude Developer Platform · in the page build-with-claude/skills-guide …ill. If you relied on the beta’s refusal as a safeguard, add your own check. <Warning> After migrating, deleting a Skill through `client.skills` (csharp, go: `client.Skills`; java: `client.skills()… streaming Claude Developer Platform · in the page build-with-claude/streaming …"content_block_delta","index":0,"delta":{"type":"text_delta","text":" check"}} event: content_block_delta data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":" the"}} e… structured-outputs Claude Developer Platform · in the page build-with-claude/structured-outputs …his subset. The `outputConfig(Class<T>)` method performs a validation check on the schema derived from the specified class. Key points: * **Local validation** occurs without sending requ… task-budgets Claude Developer Platform · in the page build-with-claude/task-budgets …content": "<npm audit output>" }, { "type": "text", "text": "Also check the Dockerfile." } ] } ``` Server-side [compaction](https://platform.claude.com/docs/en/build-with-claude/compaction-thre… thinking Claude Developer Platform · in the page build-with-claude/thinking …ass has to get everything right on the first try: no scratch work, no checking, no changing approach halfway through. For a proof, a tricky bug, or a long agentic task, the first approach is often not… thinking-steering-and-cost Claude Developer Platform · in the page build-with-claude/thinking-steering-and-cost …ith-claude/thinking"> Turn thinking on, read thinking output, and check per-model support. </Card> <Card title="Thinking in tool and multi-turn workflows" icon="wrench" href="https://platform… thinking-tool-workflows Claude Developer Platform · in the page build-with-claude/thinking-tool-workflows …d"}`), `tool_choice` options that force tool use return an error. * [Check forced tool use on your model in adaptive mode](https://platform.claude.com/docs/en/build-with-claude/thinking#thinking-with… thinking-troubleshooting Claude Developer Platform · in the page build-with-claude/thinking-troubleshooting …behavior` doesn’t apply. A replayed thinking block passes the prefix check only while the `system` prompt, `tools`, and messages that preceded it are unchanged. See [Keeping the prefix unchanged](htt… token-counting Claude Developer Platform · in the page build-with-claude/token-counting …ts](https://platform.claude.com/docs/en/build-with-claude/pdf-support#check-pdf-requirements) as the Messages API. This endpoint doesn’t support `url` or `file` document sources. </Note> <CodeGroup>… vision-coordinates Claude Developer Platform · in the page build-with-claude/vision-coordinates …when you state the expected coordinate format in your prompt and spot-check results visually before processing at scale. Small elements lose precision when an image is downscaled: for fine targets, cr… apply Claude Developer Platform · in the page cli-sdks-libraries/cli/apply …IC_IDENTITY_TOKEN_FILE: /tmp/gha-jwt steps: - uses: actions/checkout@v5 with: ref: main # the tip of main, so a queued run has the previous run's lockfile commit - us… On a remote host without a browser: Claude Developer Platform · in the page cli-sdks-libraries/cli/authentication …s 1024 \ --message '{role: user, content: "Hello, Claude"}' ``` ## Check authentication status `ant auth status` prints the credential source the CLI selected (API key environment variable, OAuth… quickstart Claude Developer Platform · in the page cli-sdks-libraries/cli/quickstart …export PATH="$PATH:$(go env GOPATH)/bin" ``` </Tab> </Tabs> Check the installation: ```bash ant --version ``` ## Authentication `ant auth login` opens a browser-based OAuth flow against t… scripting Claude Developer Platform · in the page cli-sdks-libraries/cli/scripting …s://platform.claude.com/docs/en/cli-sdks-libraries/cli/authentication#check-authentication-status) to confirm which organization and workspace you are logged in to; it warns when an environment variab… apple-foundation-models Claude Developer Platform · in the page cli-sdks-libraries/libraries/apple-foundation-models …s capabilities. New models ship as new constants in package releases; check `ClaudeModel` in Xcode for the current list, and the [Models overview](https://platform.claude.com/docs/en/models/overview)… csharp Claude Developer Platform · in the page cli-sdks-libraries/sdks/csharp …WriteLine(message); } ``` ## Error handling The SDK throws custom unchecked exception types: * `AnthropicApiException`: Base class for API errors. See this table for which exception subclass is thr… go Claude Developer Platform · in the page cli-sdks-libraries/sdks/go …t. ```go // Only one field can be non-zero, use param.IsOmitted() to check if a field is set type AnimalUnionParam struct { OfCat *Cat `json:",omitzero,inline"` OfDog *Dog `json:",omitzero,inline"`… java Claude Developer Platform · in the page cli-sdks-libraries/sdks/java …ocal tool JSON schema validation You can perform local validation to check that the JSON schema derived from your tool class respects Anthropic’s restrictions. Local validation is enabled by default,… For Amazon Bedrock support Claude Developer Platform · in the page cli-sdks-libraries/sdks/python …rrors in VS Code to help catch bugs earlier, set `python.analysis.typeCheckingMode` to `basic`. ### Response models To convert a Pydantic model to a dictionary, use the helper methods: ```python me… Automatically handles tool execution loop Claude Developer Platform · in the page cli-sdks-libraries/sdks/ruby …n in most settings. When all available connections from the pool are checked out, requests wait for a new connection to become available, with queue time counting toward the request timeout. Unless… typescript Claude Developer Platform · in the page cli-sdks-libraries/sdks/typescript …ral release to get early feedback and test new functionality. You can check the availability of all of Claude’s capabilities and tools in the [Features overview](https://platform.claude.com/docs/en/bu… intro Claude Developer Platform · in the page intro …y. Keep the key out of source control, client-side code, and prompts. Check whether your workload can use Workload Identity Federation instead of a static key. [Read the authentication guide](htt… access-transparency Claude Developer Platform · in the page manage-claude/access-transparency …Access Transparency events, with inclusion and consistency proofs you check on your own infrastructure. See [Verify Access Transparency events with the transparency log](https://platform.claude.com/do… access-transparency-log Claude Developer Platform · in the page manage-claude/access-transparency-log …docs/en/manage-claude/access-transparency-log description: Use signed checkpoints and Merkle proofs from the Compliance API to verify that no Access Transparency event was removed or altered after it… analytics-api Claude Developer Platform · in the page manage-claude/analytics-api …d exact freshness varies by query. Rather than assuming a fixed time, check the error response: requesting a date that is not yet available returns a 400 error naming the most recent available day. If… api-and-data-retention Claude Developer Platform · in the page manage-claude/api-and-data-retention …n title="How do I know if my organization has ZDR arrangements?"> Check your contract terms or contact your Anthropic account representative to confirm whether your organization has ZDR arrangemen… app-attest Claude Developer Platform · in the page manage-claude/app-attest …Apple’s [App Attest](https://developer.apple.com/documentation/devicecheck/establishing-your-app-s-integrity) service to prove that it is a genuine, unmodified build of the app you registered. Anthro… First request Claude Developer Platform · in the page manage-claude/claude-code-analytics-api …ovide metrics to justify and expand Claude Code adoption internally <Check> **Admin API credentials required.** These endpoints are part of the Admin API. You can access them using an [Admin API ke… claude-tag-api Claude Developer Platform · in the page manage-claude/claude-tag-api …with Claude Platform workspaces, API usage, or the Claude Console. <Check> **Scoped Admin API key required** These endpoints require an Admin API key with the `read:claude_tag` scope (for `GET`… cmek-aws-kms Claude Developer Platform · in the page manage-claude/cmek-aws-kms …Whoever adds the key in Claude needs the ARN. </Tab> </Tabs> Each check of the key in Claude adds four expected access-denied errors to CloudTrail. You can [filter them out](https://platform.claud… cmek-azure-key-vault Claude Developer Platform · in the page manage-claude/cmek-azure-key-vault …r chat. The application requests no Microsoft Graph permissions. ### Check the vault For the lowest latency, use a vault in `northcentralus` or `eastus2`. Run this first, in the Azure CLI or Cloud S… cmek-claude-platform-on-aws Claude Developer Platform · in the page manage-claude/cmek-claude-platform-on-aws …ncryption key**, select the key and click **Save**. 3. Select the checkbox to confirm that you have read the CMEK documentation, then click **Confirm**. You see **Workspace settings updated.*… cmek-google-cloud-kms Claude Developer Platform · in the page manage-claude/cmek-google-cloud-kms …key’s permissions"> On the key ring details page, select the checkbox next to the key. Open the **Permissions** panel and click **Grant access**. </Step> <Step title="Grant Anthr… cmek-troubleshooting Claude Developer Platform · in the page manage-claude/cmek-troubleshooting …dd** on claude.ai, and the Admin API’s validate call all run the same check. When it fails (**Connection failed** in the Claude Console), see the causes for [AWS KMS](https://platform.claude.com/docs/… Fetch the first page (newest activities first). Claude Developer Platform · in the page manage-claude/compliance-activity-feed …rm.claude.com/docs/en/manage-claude/compliance-api-access). </Note> <Check> **Required scope:** `read:compliance_activities` on the Compliance Access Key or Admin API key. Both Compliance Access… compliance-api-access Claude Developer Platform · in the page manage-claude/compliance-api-access …e Compliance API for your organization and create API keys. </Note> <Check> **Required role:** organization admin (Claude Console), or primary owner or organization owner (claude.ai). </Check> The… WARNING: This operation PERMANENTLY deletes the chat, all of its messages, Claude Developer Platform · in the page manage-claude/compliance-content-data …rm.claude.com/docs/en/manage-claude/compliance-api-access). </Note> <Check> **Required scope:** `read:compliance_user_data` on the Compliance Access Key. The delete endpoints also require `delete:c… compliance-errors Claude Developer Platform · in the page manage-claude/compliance-errors …nce-errors#500-internal-server-error) | Depends on `x-should-retry` | Check the `x-should-retry` response header before retrying.… before_id is the first_id from a previous response Claude Developer Platform · in the page manage-claude/compliance-integration-patterns …rm.claude.com/docs/en/manage-claude/compliance-api-access). </Note> <Check> **Required scope:** `read:compliance_activities` on the Compliance Access Key or Admin API key. </Check> A production Co… compliance-org-data Claude Developer Platform · in the page manage-claude/compliance-org-data …rm.claude.com/docs/en/manage-claude/compliance-api-access). </Note> <Check> **Required scope:** `read:compliance_org_data` on the Compliance Access Key. The user, user-preference, and group-member…