name: Claude Agent SDK (Python)
slug: claude-sdk-python
category: agent-framework
language: python
logo: /logos/claude-sdk-python.svg
description: >-
CopilotKit integration with Claude Agent SDK (Python). Supports the full range of
CopilotKit features including generative UI, shared state, human-in-the-loop,
sub-agents, and streaming.
partner_docs: null
repo: https://github.com/CopilotKit/CopilotKit/tree/main/showcase/integrations/claude-sdk-python
copilotkit_version: 2.0.0
deployed: true
docs_mode: generated
sort_order: 70
generative_ui:
- constrained-explicit
- a2ui-fixed-schema
- a2ui-dynamic-schema
interaction_modalities:
- sidebar
- embedded
- chat
not_supported_features:
# QUARANTINED pending a @copilotkit/react-core release. gen-ui-interrupt /
# interrupt-headless fail turn-2 on a useInterrupt/useHeadlessInterrupt
# RESUME-PATH hook bug in @copilotkit/react-core/v2: backend resumes + streams
# (HTTP 200) but the frontend never appends the confirmation assistant bubble,
# so the harness DOM settle-check times out. Fix is a published-package change
# (out of scope here); honestly marked not-supported (skipped-incapable, not
# green, not red) rather than a regression. Demos remain wired below.
- gen-ui-interrupt
- interrupt-headless
features:
- beautiful-chat
- cli-start
- agentic-chat
- prebuilt-sidebar
- prebuilt-popup
- chat-slots
- chat-customization-css
- headless-simple
- headless-complete
- reasoning-custom
- reasoning-default
- frontend-tools
- frontend-tools-async
- gen-ui-tool-based
- hitl-in-chat
- hitl-in-app
- declarative-gen-ui
- a2ui-fixed-schema
- mcp-apps
- gen-ui-agent
- tool-rendering-default-catchall
- tool-rendering-custom-catchall
- tool-rendering
- tool-rendering-reasoning-chain
- shared-state-read
- shared-state-read-write
- shared-state-streaming
- readonly-state-agent-context
- subagents
- multimodal
- auth
- declarative-hashbrown
- declarative-json-render
- open-gen-ui
- open-gen-ui-advanced
- voice
- agent-config
interrupt_pattern: promise-based
agent_config_pattern: shared-state
a2ui_pattern: schema-loading
auth_pattern: runtime-onrequest
demos:
- id: cli-start
name: CLI Start Command
description: Copy-paste command to clone the canonical starter
tags:
- chat-ui
command: "npx copilotkit@latest init --framework claude-sdk-python"
- id: agentic-chat
name: Agentic Chat
description: Natural conversation with frontend tool execution
tags:
- chat-ui
route: /demos/agentic-chat
animated_preview_url:
- id: tool-rendering
name: Tool Rendering
description: Backend agent tools rendered as UI components
tags:
- agent-capabilities
route: /demos/tool-rendering
animated_preview_url:
highlight:
- src/agents/agent.py
- src/app/demos/tool-rendering/page.tsx
- src/app/api/copilotkit/route.ts
- id: gen-ui-agent
name: Agentic Generative UI
description: Long-running agent tasks with generated UI
tags:
- generative-ui
route: /demos/gen-ui-agent
animated_preview_url:
- id: shared-state-streaming
name: State Streaming
description: Per-token state delta streaming from agent to UI
tags:
- agent-state
route: /demos/shared-state-streaming
animated_preview_url:
highlight:
- src/agents/agent.py
- src/app/demos/shared-state-streaming/page.tsx
- src/app/api/copilotkit/route.ts
- id: shared-state-read-write
name: Shared State (Read + Write)
description: Bidirectional agent state — UI writes preferences, agent writes notes back
tags:
- agent-state
route: /demos/shared-state-read-write
animated_preview_url:
highlight:
- src/agents/shared_state_read_write_agent.py
- src/app/demos/shared-state-read-write/page.tsx
- src/app/demos/shared-state-read-write/preferences-card.tsx
- src/app/demos/shared-state-read-write/notes-card.tsx
- src/app/api/copilotkit/route.ts
- id: shared-state-read
name: Shared State (Read)
description: Agent reads frontend-provided state as context
tags:
- agent-state
route: /demos/shared-state-read
animated_preview_url:
highlight:
- src/agents/agent.py
- src/app/demos/shared-state-read/page.tsx
- src/app/demos/shared-state-read/recipe-card.tsx
- src/app/api/copilotkit/route.ts
- id: subagents
name: Sub-Agents
description: Multiple agents with visible task delegation
tags:
- multi-agent
route: /demos/subagents
animated_preview_url:
highlight:
- src/agents/subagents_agent.py
- src/app/demos/subagents/page.tsx
- src/app/demos/subagents/delegation-log.tsx
- src/app/api/copilotkit/route.ts
- id: prebuilt-sidebar
name: "Pre-Built: Sidebar"
description: Docked sidebar chat via
tags:
- chat-ui
route: /demos/prebuilt-sidebar
animated_preview_url:
highlight:
- src/agents/agent.py
- src/app/demos/prebuilt-sidebar/page.tsx
- src/app/api/copilotkit/route.ts
- id: prebuilt-popup
name: "Pre-Built: Popup"
description: Floating popup chat via
tags:
- chat-ui
route: /demos/prebuilt-popup
animated_preview_url:
highlight:
- src/agents/agent.py
- src/app/demos/prebuilt-popup/page.tsx
- src/app/api/copilotkit/route.ts
- id: chat-slots
name: Chat Customization (Slots)
description: Customize CopilotChat via its slot system
tags:
- chat-ui
route: /demos/chat-slots
animated_preview_url:
highlight:
- src/agents/agent.py
- src/app/demos/chat-slots/page.tsx
- src/app/demos/chat-slots/slot-wrappers.tsx
- src/app/api/copilotkit/route.ts
- id: chat-customization-css
name: Chat Customization (CSS)
description: Default CopilotChat re-themed via CopilotKitCSSProperties
tags:
- chat-ui
route: /demos/chat-customization-css
animated_preview_url:
highlight:
- src/agents/agent.py
- src/app/demos/chat-customization-css/page.tsx
- src/app/demos/chat-customization-css/theme.css
- src/app/api/copilotkit/route.ts
- id: headless-simple
name: Headless Chat (Simple)
description: Minimal custom chat surface built on useAgent
tags:
- chat-ui
route: /demos/headless-simple
animated_preview_url:
highlight:
- src/agents/agent.py
- src/app/demos/headless-simple/page.tsx
- src/app/api/copilotkit/route.ts
- id: headless-complete
name: Headless Chat (Complete)
description: Full chat implementation built from scratch on useAgent
tags:
- chat-ui
route: /demos/headless-complete
animated_preview_url:
highlight:
- src/agents/agent.py
- src/app/demos/headless-complete/page.tsx
- src/app/demos/headless-complete/chat/message-list.tsx
- src/app/demos/headless-complete/hooks/use-tool-renderers.tsx
- src/app/api/copilotkit/route.ts
- id: frontend-tools
name: Frontend Tools (In-App Actions)
description: Agent invokes client-side handlers registered with useFrontendTool
tags:
- interactivity
route: /demos/frontend-tools
animated_preview_url:
highlight:
- src/agents/frontend_tools.py
- src/app/demos/frontend-tools/page.tsx
- src/app/api/copilotkit/route.ts
- id: frontend-tools-async
name: Frontend Tools (Async)
description: useFrontendTool with an async handler — agent awaits a client-side async operation (simulated notes DB query) and uses the returned result
tags:
- interactivity
route: /demos/frontend-tools-async
animated_preview_url:
highlight:
- src/agents/frontend_tools_async.py
- src/app/demos/frontend-tools-async/page.tsx
- src/app/demos/frontend-tools-async/notes-card.tsx
- src/app/api/copilotkit/route.ts
- id: hitl-in-app
name: In-App Human in the Loop (Frontend Tools + async HITL)
description: Agent requests approval via useFrontendTool with an async handler; the approval UI pops up as an app-level modal OUTSIDE the chat, and a completion callback resolves the pending tool Promise with the user's decision
tags:
- interactivity
route: /demos/hitl-in-app
animated_preview_url:
highlight:
- src/agents/hitl_in_app.py
- src/app/demos/hitl-in-app/page.tsx
- src/app/demos/hitl-in-app/approval-dialog.tsx
- src/app/api/copilotkit/route.ts
- id: readonly-state-agent-context
name: Readonly State (Agent Context)
description: Frontend provides read-only context to the agent via useAgentContext
tags:
- agent-state
route: /demos/readonly-state-agent-context
animated_preview_url:
highlight:
- src/agents/readonly_state_agent_context.py
- src/app/demos/readonly-state-agent-context/page.tsx
- src/app/api/copilotkit/route.ts
- id: tool-rendering-default-catchall
name: Tool Rendering (Default Catch-all)
description: Out-of-the-box tool rendering — backend defines the tools; the frontend adds zero custom renderers and relies on CopilotKit's built-in default UI
tags:
- generative-ui
route: /demos/tool-rendering-default-catchall
animated_preview_url:
highlight:
- src/app/demos/tool-rendering-default-catchall/page.tsx
- src/agents/agent.py
- src/app/api/copilotkit/route.ts
- id: tool-rendering-custom-catchall
name: Tool Rendering (Custom Catch-all)
description: Single branded wildcard renderer via useDefaultRenderTool — the same app-designed card paints every tool call
tags:
- generative-ui
route: /demos/tool-rendering-custom-catchall
animated_preview_url:
highlight:
- src/app/demos/tool-rendering-custom-catchall/page.tsx
- src/app/demos/tool-rendering-custom-catchall/custom-catchall-renderer.tsx
- src/agents/agent.py
- src/app/api/copilotkit/route.ts
- id: open-gen-ui
name: Fully Open-Ended Generative UI
description: Agent generates UI from an arbitrary component library
tags:
- generative-ui
route: /demos/open-gen-ui
animated_preview_url:
highlight:
- src/agents/open_gen_ui_agent.py
- src/app/demos/open-gen-ui/page.tsx
- src/app/api/copilotkit-ogui/route.ts
- id: open-gen-ui-advanced
name: "Open-Ended Gen UI (Advanced: with frontend function calling)"
description: Agent-authored UI that can invoke frontend sandbox functions from inside the iframe
tags:
- generative-ui
route: /demos/open-gen-ui-advanced
animated_preview_url:
highlight:
- src/agents/open_gen_ui_advanced_agent.py
- src/app/demos/open-gen-ui-advanced/page.tsx
- src/app/demos/open-gen-ui-advanced/sandbox-functions.ts
- src/app/demos/open-gen-ui-advanced/suggestions.ts
- src/app/api/copilotkit-ogui/route.ts
- id: declarative-json-render
name: "Declarative UI: json-render"
description: Declarative generative UI via @json-render/react — Claude emits a flat element-tree spec the renderer consumes
tags:
- generative-ui
route: /demos/declarative-json-render
animated_preview_url:
highlight:
- src/agents/byoc_json_render_agent.py
- src/app/demos/declarative-json-render/page.tsx
- src/app/demos/declarative-json-render/json-render-renderer.tsx
- src/app/demos/declarative-json-render/registry.tsx
- src/app/demos/declarative-json-render/catalog.ts
- src/app/api/copilotkit-declarative-json-render/route.ts
- id: declarative-hashbrown
name: "Declarative UI: Hashbrown"
description: Declarative streaming UI via @hashbrownai/react useJsonParser — Claude emits a catalog-constrained UI envelope
tags:
- generative-ui
route: /demos/declarative-hashbrown
animated_preview_url:
highlight:
- src/agents/byoc_hashbrown_agent.py
- src/app/demos/declarative-hashbrown/page.tsx
- src/app/demos/declarative-hashbrown/hashbrown-renderer.tsx
- src/app/api/copilotkit-declarative-hashbrown/route.ts
- id: multimodal
name: Multimodal Attachments
description: Image + PDF attachments routed through Claude's native vision + pypdf text flattening
tags:
- interactivity
route: /demos/multimodal
animated_preview_url:
highlight:
- src/agents/multimodal_agent.py
- src/app/demos/multimodal/page.tsx
- src/app/demos/multimodal/sample-attachment-buttons.tsx
- src/app/api/copilotkit-multimodal/route.ts
- id: voice
name: Voice Input
description: Audio transcription wired on a per-demo runtime with a guarded OpenAI Whisper service that maps missing keys to 401
tags:
- chat-ui
route: /demos/voice
animated_preview_url:
highlight:
- src/app/demos/voice/page.tsx
- src/app/demos/voice/sample-audio-button.tsx
- src/app/api/copilotkit-voice/[[...slug]]/route.ts
- id: agent-config
name: Agent Config Object
description: Forwarded props (tone / expertise / responseLength) flow from the provider into the agent's system prompt via `forwardedProps.config.configurable.properties`
tags:
- agent-capabilities
route: /demos/agent-config
animated_preview_url:
highlight:
- src/agents/agent_config_agent.py
- src/app/demos/agent-config/page.tsx
- src/app/demos/agent-config/config-card.tsx
- src/app/demos/agent-config/use-agent-config.ts
- src/app/api/copilotkit-agent-config/route.ts
- id: reasoning-custom
name: Agentic Chat (Reasoning)
description: Visible reasoning / thinking chain rendered via a custom messageView slot
tags:
- chat-ui
route: /demos/reasoning-custom
animated_preview_url:
highlight:
- src/agents/reasoning_agent.py
- src/app/demos/reasoning-custom/page.tsx
- src/app/demos/reasoning-custom/reasoning-block.tsx
- src/app/api/copilotkit/route.ts
- id: reasoning-default
name: Reasoning (Default Render)
description: Reasoning rendered via CopilotKit's built-in collapsible card with zero custom config
tags:
- chat-ui
route: /demos/reasoning-default
animated_preview_url:
highlight:
- src/agents/reasoning_agent.py
- src/app/demos/reasoning-default/page.tsx
- src/app/api/copilotkit/route.ts
- id: tool-rendering-reasoning-chain
name: Tool Rendering (Reasoning Chain)
description: Sequential tool calls combined with visible reasoning steps
tags:
- generative-ui
route: /demos/tool-rendering-reasoning-chain
animated_preview_url:
highlight:
- src/agents/tool_rendering_reasoning_chain_agent.py
- src/app/demos/tool-rendering-reasoning-chain/page.tsx
- src/app/demos/tool-rendering-reasoning-chain/weather-card.tsx
- src/app/demos/tool-rendering-reasoning-chain/flight-list-card.tsx
- src/app/demos/tool-rendering-reasoning-chain/custom-catchall-renderer.tsx
- src/app/demos/tool-rendering-reasoning-chain/reasoning-block.tsx
- src/app/api/copilotkit/route.ts
- id: auth
name: Authentication
description: Framework-native request auth via the V2 runtime's `onRequest` hook; missing bearer token returns 401
tags:
- agent-capabilities
route: /demos/auth
animated_preview_url:
highlight:
- src/app/demos/auth/page.tsx
- src/app/demos/auth/auth-banner.tsx
- src/app/demos/auth/use-demo-auth.ts
- src/app/demos/auth/demo-token.ts
- src/app/api/copilotkit-auth/[[...slug]]/route.ts
- id: mcp-apps
name: MCP Apps
description: MCP server-driven UI via activity renderers — the agent calls a tool on a remote MCP server (Excalidraw) and the runtime middleware renders the returned UI resource as a sandboxed iframe inline in the chat
tags:
- generative-ui
route: /demos/mcp-apps
animated_preview_url:
highlight:
- src/agents/mcp_apps_agent.py
- src/app/demos/mcp-apps/page.tsx
- src/app/api/copilotkit-mcp-apps/route.ts
- id: beautiful-chat
name: Beautiful Chat
description: Polished brand-themed chat surface over the Claude Agent SDK backend with seeded suggestion pills and a glanceable decorative side panel — pure frontend dressing, no extra runtime config
tags:
- chat-ui
route: /demos/beautiful-chat
animated_preview_url:
highlight:
- src/app/demos/beautiful-chat/page.tsx
- src/app/api/copilotkit/route.ts
- id: gen-ui-tool-based
name: Tool-Based Generative UI
description: Agent uses tools to trigger UI generation (haiku generator via useFrontendTool + useRenderTool)
tags:
- generative-ui
route: /demos/gen-ui-tool-based
animated_preview_url:
highlight:
- src/agents/agent.py
- src/app/demos/gen-ui-tool-based/page.tsx
- src/app/api/copilotkit/route.ts
- id: hitl-in-chat
name: In-Chat HITL (useHumanInTheLoop — ergonomic API)
description: Interactive approval/decision surface rendered inline in the chat via the high-level `useHumanInTheLoop` hook
tags:
- interactivity
route: /demos/hitl-in-chat
animated_preview_url:
highlight:
- src/agents/hitl_in_chat_agent.py
- src/app/demos/hitl-in-chat/page.tsx
- src/app/demos/hitl-in-chat/time-picker-card.tsx
- src/app/api/copilotkit/route.ts
- id: gen-ui-interrupt
name: In-Chat HITL (useInterrupt — low-level primitive)
description: Interactive time-picker component rendered inline in the chat via useFrontendTool with an async handler — the Promise resolves only when the user picks a slot or cancels
tags:
- generative-ui
route: /demos/gen-ui-interrupt
animated_preview_url:
highlight:
- src/agents/interrupt_agent.py
- src/app/demos/gen-ui-interrupt/page.tsx
- src/app/demos/gen-ui-interrupt/_components/time-picker-card.tsx
- src/app/api/copilotkit/route.ts
- id: interrupt-headless
name: Headless Interrupt (testing)
description: Resolve interrupts from a plain button grid — no chat, no useInterrupt render prop; the time-picker popup appears in the app surface outside the chat
tags:
- interactivity
route: /demos/interrupt-headless
animated_preview_url:
highlight:
- src/agents/interrupt_agent.py
- src/app/demos/interrupt-headless/page.tsx
- src/app/api/copilotkit/route.ts
- id: declarative-gen-ui
name: Declarative Generative UI (A2UI)
description: Canonical A2UI BYOC — custom catalog (Card/StatusBadge/Metric/InfoRow/PrimaryButton/PieChart/BarChart) wired via a2ui.catalog on the provider; backend agent owns the `generate_a2ui` tool with injectA2UITool false
tags:
- generative-ui
route: /demos/declarative-gen-ui
animated_preview_url:
highlight:
- src/agents/a2ui_dynamic.py
- src/app/demos/declarative-gen-ui/page.tsx
- src/app/demos/declarative-gen-ui/a2ui/catalog.ts
- src/app/demos/declarative-gen-ui/a2ui/definitions.ts
- src/app/demos/declarative-gen-ui/a2ui/renderers.tsx
- src/app/api/copilotkit-declarative-gen-ui/route.ts
- id: a2ui-fixed-schema
name: Declarative Generative UI (A2UI — Fixed Schema)
description: A2UI rendering against a known client-side schema; the backend ships flight_schema.json and only streams data via display_flight
tags:
- generative-ui
route: /demos/a2ui-fixed-schema
animated_preview_url:
highlight:
- src/agents/a2ui_fixed.py
- src/agents/a2ui_schemas/flight_schema.json
- src/app/demos/a2ui-fixed-schema/page.tsx
- src/app/demos/a2ui-fixed-schema/a2ui/catalog.ts
- src/app/api/copilotkit-a2ui-fixed-schema/route.ts