50 pages for preview.

TypeScript SDK V2 session API (removed) Claude Code CLI · path agent-sdk/typescript-v2-preview model-deprecations Claude Developer Platform · in the page about-claude/model-deprecations …h/deprecation-commitments). ## Model status <Note> [Claude Mythos Preview](https://anthropic.com/glasswing) (`claude-mythos-preview`) is deprecated. To migrate to [Claude Mythos 5](https://anthrop… choosing-a-model Claude Developer Platform · in the page about-claude/models/choosing-a-model …://platform.claude.com/docs/en/build-with-claude/fast-mode) (research preview), which delivers up to 2.5x higher output speed at premium pricing. * **Cost:** What's your budget for both development an… Or, for the model with the same capabilities and no access approval requirement: Claude Developer Platform · in the page about-claude/models/migration-guide …## Migrating to Claude Mythos 5 and Claude Fable 5 from Claude Mythos Preview [Claude Mythos 5](https://anthropic.com/glasswing) is the access-gated successor to [Claude Mythos Preview](https://anthr… pricing Claude Developer Platform · in the page about-claude/pricing …iers. </Note> <Note> Claude 4.7 and later models and Claude Mythos Preview use a newer tokenizer that contributes to their improved performance on a wide range of tasks. This tokenizer produces app… PDF Processing Claude Developer Platform · in the page agents-and-tools/agent-skills/best-practices …ring nested references, Claude might use commands like `head -100` to preview content rather than reading entire files, resulting in incomplete information. **Keep references one level deep from SKIL… claude-api-skill Claude Developer Platform · in the page agents-and-tools/agent-skills/claude-api-skill …ack-credit retry), and updating fallback code written against earlier preview shapes As it edits, the skill explains each change and its motivation inline. On completion, it produces a checklist of i… concepts Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/concepts …, and the connection model. --- <Note> MCP tunnels are in research preview. [Request access](https://claude.com/form/claude-managed-agents) to try them. </Note> This page defines the terms used th… console Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/console …ts from the Claude Console. --- <Note> MCP tunnels are in research preview. [Request access](https://claude.com/form/claude-managed-agents) to try them. </Note> This page covers the Console side o… Edit docker-compose.yaml: increment the integer in the setup service's Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/deploy-compose …a VM using Docker Compose. --- <Note> MCP tunnels are in research preview. [Request access](https://claude.com/form/claude-managed-agents) to try them. </Note> This guide deploys the [tunnel stac… deploy-helm Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/deploy-helm …g the Anthropic Helm chart. --- <Note> MCP tunnels are in research preview. [Request access](https://claude.com/form/claude-managed-agents) to try them. </Note> The Anthropic Helm chart installs t… overview Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/overview …pic's IP ranges on your origin. <Note> MCP tunnels are in research preview. [Request access](https://claude.com/form/claude-managed-agents) to try them. They are provided "as-is" without any uptime… quickstart Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/quickstart …Docker Compose deployment. --- <Note> MCP tunnels are in research preview. [Request access](https://claude.com/form/claude-managed-agents) to try them. </Note> This quickstart takes you from zero… reference Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/reference …s, and the setup component. --- <Note> MCP tunnels are in research preview. [Request access](https://claude.com/form/claude-managed-agents) to try them. </Note> ## Proxy configuration The [proxy]… security Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/security …for MCP tunnel deployments. --- <Note> MCP tunnels are in research preview. [Request access](https://claude.com/form/claude-managed-agents) to try them. </Note> The tunnel architecture provides st… troubleshooting Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/troubleshooting …g issues in a tunnel stack. --- <Note> MCP tunnels are in research preview. [Request access](https://claude.com/form/claude-managed-agents) to try them. </Note> A request through the tunnel can fa… code-execution-tool Claude Developer Platform · in the page agents-and-tools/tool-use/code-execution-tool …lable on Amazon Bedrock or Google Cloud. <Note> For [Claude Mythos Preview](https://anthropic.com/glasswing), code execution is supported on the Claude API and Microsoft Foundry only. It is not ava… define-tools Claude Developer Platform · in the page agents-and-tools/tool-use/define-tools …de Opus 5, supports forced tool use. </Note> <Note> [Claude Mythos Preview](https://anthropic.com/glasswing) does not support forced tool use. Requests with `tool_choice: {"type": "any"}` or `tool_… web-fetch-tool Claude Developer Platform · in the page agents-and-tools/tool-use/web-fetch-tool …with Claude Fable 5, Claude Opus 4.8, Claude Mythos 5, [Claude Mythos Preview](https://anthropic.com/glasswing), Claude Opus 4.7, Claude Opus 4.6, Claude Sonnet 5, and Claude Sonnet 4.6. Claude can wr… web-search-tool Claude Developer Platform · in the page agents-and-tools/tool-use/web-search-tool …ring is available with Claude 4.6 and later models and [Claude Mythos Preview](https://anthropic.com/glasswing). Three versions of the web search tool are available: * `web_search_20250305`: basic w… Admin Claude Developer Platform · in the page api/admin …strict usage returned to the specified speed(s) (Claude Code research preview). Requires the `fast-mode-2026-02-01` beta header. - `"fast"` - `"standard"` - `workspace_ids: optional array of… Usage Report Claude Developer Platform · in the page api/admin/usage_report …strict usage returned to the specified speed(s) (Claude Code research preview). Requires the `fast-mode-2026-02-01` beta header. - `"fast"` - `"standard"` - `workspace_ids: optional array of… Get Messages Usage Report Claude Developer Platform · in the page api/admin/usage_report/retrieve_messages …strict usage returned to the specified speed(s) (Claude Code research preview). Requires the `fast-mode-2026-02-01` beta header. - `"fast"` - `"standard"` - `workspace_ids: optional array of… Beta Claude Developer Platform · in the page api/beta …e for long-running agents and coding - `"claude-mythos-preview"` New class of intelligence, strongest in coding and cybersecurity - `"claude-opus-4-6"`… Dreams Claude Developer Platform · in the page api/beta/dreams …sting store chosen via output_behavior. The Dreams API is in research preview: the request and response shapes are volatile and may change without the deprecation period that applies to generally-avai… Archive a Dream Claude Developer Platform · in the page api/beta/dreams/archive …sting store chosen via output_behavior. The Dreams API is in research preview: the request and response shapes are volatile and may change without the deprecation period that applies to generally-avai… Cancel a Dream Claude Developer Platform · in the page api/beta/dreams/cancel …sting store chosen via output_behavior. The Dreams API is in research preview: the request and response shapes are volatile and may change without the deprecation period that applies to generally-avai… Create a Dream Claude Developer Platform · in the page api/beta/dreams/create …sting store chosen via output_behavior. The Dreams API is in research preview: the request and response shapes are volatile and may change without the deprecation period that applies to generally-avai… Get a Dream Claude Developer Platform · in the page api/beta/dreams/retrieve …sting store chosen via output_behavior. The Dreams API is in research preview: the request and response shapes are volatile and may change without the deprecation period that applies to generally-avai… Messages Claude Developer Platform · in the page api/beta/messages …e for long-running agents and coding - `"claude-mythos-preview"` New class of intelligence, strongest in coding and cybersecurity - `"claude-opus-4-6"`… Batches Claude Developer Platform · in the page api/beta/messages/batches …r long-running agents and coding - `"claude-mythos-preview"` New class of intelligence, strongest in coding and cybersecurity - `"claude-opus… Create a Message Batch Claude Developer Platform · in the page api/beta/messages/batches/create …r long-running agents and coding - `"claude-mythos-preview"` New class of intelligence, strongest in coding and cybersecurity - `"claude-opus… Retrieve Message Batch results Claude Developer Platform · in the page api/beta/messages/batches/results …r long-running agents and coding - `"claude-mythos-preview"` New class of intelligence, strongest in coding and cybersecurity - `"claude-opus… Count tokens in a Message Claude Developer Platform · in the page api/beta/messages/count_tokens …e for long-running agents and coding - `"claude-mythos-preview"` New class of intelligence, strongest in coding and cybersecurity - `"claude-opus-4-6"`… Create a Message Claude Developer Platform · in the page api/beta/messages/create …e for long-running agents and coding - `"claude-mythos-preview"` New class of intelligence, strongest in coding and cybersecurity - `"claude-opus-4-6"`… Sessions Claude Developer Platform · in the page api/beta/sessions …th: 256 - `type: "advisor"` ### Beta Managed Agents Agent Message Preview - `BetaManagedAgentsAgentMessagePreview object` - `id: string` The id the buffered agent.message will carry if it… Events Claude Developer Platform · in the page api/beta/sessions/events …ces no final event — its terminal `span.model_request_end` closes the preview. Accepts one or more event types to preview and may be repeated: `agent.message` streams `content_delta` fragments; `agent… Stream Events Claude Developer Platform · in the page api/beta/sessions/events/stream …ces no final event — its terminal `span.model_request_end` closes the preview. Accepts one or more event types to preview and may be repeated: `agent.message` streams `content_delta` fragments; `agent… Threads Claude Developer Platform · in the page api/beta/sessions/threads …te changed it. - `BetaManagedAgentsStartEvent object` Opens a preview of a buffered event. Carries the previewed event's type and id only. Followed by zero or more event_delta events with the… Events Claude Developer Platform · in the page api/beta/sessions/threads/events …ces no final event — its terminal `span.model_request_end` closes the preview. Accepts one or more event types to preview and may be repeated: `agent.message` streams `content_delta` fragments; `agent… Stream Session Thread Events Claude Developer Platform · in the page api/beta/sessions/threads/events/stream …ces no final event — its terminal `span.model_request_end` closes the preview. Accepts one or more event types to preview and may be repeated: `agent.message` streams `content_delta` fragments; `agent… Tunnels Claude Developer Platform · in the page api/beta/tunnels …Create Tunnel **POST** `/v1/tunnels` The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersede… Archive Tunnel Claude Developer Platform · in the page api/beta/tunnels/archive …T** `/v1/tunnels/{tunnel_id}/archive` The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersede… Certificates Claude Developer Platform · in the page api/beta/tunnels/certificates …/v1/tunnels/{tunnel_id}/certificates` The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersede… Archive Tunnel Certificate Claude Developer Platform · in the page api/beta/tunnels/certificates/archive …ertificates/{certificate_id}/archive` The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersede… Create Tunnel Certificate Claude Developer Platform · in the page api/beta/tunnels/certificates/create …/v1/tunnels/{tunnel_id}/certificates` The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersede… List Tunnel Certificates Claude Developer Platform · in the page api/beta/tunnels/certificates/list …/v1/tunnels/{tunnel_id}/certificates` The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersede… Get Tunnel Certificate Claude Developer Platform · in the page api/beta/tunnels/certificates/retrieve …el_id}/certificates/{certificate_id}` The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersede… Create Tunnel Claude Developer Platform · in the page api/beta/tunnels/create …Create Tunnel **POST** `/v1/tunnels` The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersede… List Tunnels Claude Developer Platform · in the page api/beta/tunnels/list # List Tunnels **GET** `/v1/tunnels` The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersede…