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CopilotKit

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CopilotKit
The Frontend Stack for Agents & Generative UI. React, Angular, Mobile, Slack, and more. Makers of the AG-UI Protocol

TypeScript · 37423 stars

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[v2] Message view freezes mid-run in long multi-tool runs (LangGraphAgent); state updates flow but UI stops re-rendering Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

CopilotKit/CopilotKit#6301 · 3 comments · 1 reaction · Opened Aug 2, 2026
Track accepted frozen React frontend-matrix failures Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

CopilotKit/CopilotKit#6113 · 3 comments · Opened Jul 22, 2026
🚀 Feature Request: Add opt-in recovery for pending frontend tool calls during connect replay Open

Difficulty 5/5 Over a week Newbie friendliness 48/100

CopilotKit/CopilotKit#6101 · 3 comments · 1 reaction · Opened Jul 22, 2026
🐛 Bug: Virtual scrolling jitters badly with messages of varying heights Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

CopilotKit/CopilotKit#6089 · 6 comments · 1 reaction · Opened Jul 21, 2026
Bug : CopilotChat message overlap / visual corruption during fast scroll after switching to other tab and coming back Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

CopilotKit/CopilotKit#5979 · 4 comments · Opened Jul 15, 2026
Feature: MCP Apps per-tool include/exclude filter (beyond agentId/server scoping) Open

feature request help wanted mcp

Difficulty 4/5 3-5 days Newbie friendliness 52/100

CopilotKit/CopilotKit#5930 · 3 comments · 1 reaction · Opened Jul 12, 2026
🚀 Feature Request: Option for timestamps in the UI Open

feature request good first issue help wanted

Difficulty 5/5 Over a week Newbie friendliness 35/100

CopilotKit/CopilotKit#5892 · 5 comments · 2 reactions · Opened Jul 9, 2026
🐛 Bug: A2UI components are not supported in React Native environment Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

CopilotKit/CopilotKit#5785 · 1 comment · Opened Jul 1, 2026
🐛 Bug: ReactNavite. Web messages do not render Markdown content correctly. Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

CopilotKit/CopilotKit#5781 · 1 comment · Opened Jun 30, 2026
🐛 Bug: canvas/langgraph-python example self-loops chat_node on LLM-controlled `planStatus` with no iteration guard — graph crashes on degenerate LLM output Open

bug reserved for students

Difficulty 3/5 1-2 days Newbie friendliness 68/100

CopilotKit/CopilotKit#5606 · 3 comments · Opened Jun 22, 2026
🚀 Feature Request: useFrontendServices() / Native Client-Side Service Execution for LangGraph Nodes Open

feature request

CopilotKit/CopilotKit#5467 · 9 comments · 8 reactions · 1 assignee · Opened Jun 16, 2026
🐛 Bug: AG-UI State Key `ag-ui` vs `ag_ui` Inconsistency Causes A2UI Rendering Failures Open

bug reserved for students

Difficulty 3/5 1-2 days Newbie friendliness 68/100

CopilotKit/CopilotKit#5463 · 2 comments · Opened Jun 16, 2026
🚀 Feature: @copilotkitnext/angular — Stop button + serialize next send (parity with React v2) Open

feature request

Difficulty 4/5 3-5 days Newbie friendliness 57/100

CopilotKit/CopilotKit#5428 · 9 comments · Opened Jun 12, 2026
🐛 Bug: MCPAppsMiddleware does not render FastMCP / prefab-ui app tools — no standard MCP UI rendering protocol Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 52/100

CopilotKit/CopilotKit#5382 · 2 comments · Opened Jun 11, 2026
🚀 Feature Request: Expose IntelligenceIndicator auto-mount behavior as configurable option Open

feature request good first issue help wanted

Difficulty 3/5 1-2 days Newbie friendliness 68/100

CopilotKit/CopilotKit#5126 · 3 comments · 1 reaction · Opened May 31, 2026
🐛 Bug: useFrontendTool render `args` uses LLM-generated tool call args instead of AG-UI TOOL_CALL_ARGS event data Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 58/100

CopilotKit/CopilotKit#4935 · 4 comments · Opened May 20, 2026
🚀 Feature Request: (LangGraph) Use `interrupt()` for FrontEnd tools Open

feature request

Difficulty 5/5 Over a week Newbie friendliness 42/100

CopilotKit/CopilotKit#4920 · 2 comments · Opened May 19, 2026
🚀 Feature Request: C# / .NET Runtime Server Adapter Open

feature request

Difficulty 5/5 Over a week Newbie friendliness 35/100

CopilotKit/CopilotKit#4794 · 3 comments · 3 reactions · Opened May 13, 2026
🚀 Feature Request: agentId != name Open

feature request good first issue help wanted reserved for students

Difficulty 3/5 1-2 days Newbie friendliness 52/100

CopilotKit/CopilotKit#4775 · 2 comments · Opened May 12, 2026
retry-utils.ts — Retry-After > 60s throws instead of surfacing STOP condition Open

feature request

Difficulty 3/5 1-2 days Newbie friendliness 62/100

CopilotKit/CopilotKit#4772 · 2 comments · Opened May 11, 2026
🐛 Bug: RUN_STARTED / AG-UI: no standard way to correlate server trace (OTel, Langfuse) with browser for user feedback Open

bug

Difficulty 5/5 Over a week Newbie friendliness 35/100

CopilotKit/CopilotKit#4634 · 2 comments · Opened May 4, 2026
🚀 Feature Request: useAgentContext which accepts an array instead of single item Open

feature request reserved for students

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

CopilotKit/CopilotKit#3891 · 1 comment · Opened Apr 14, 2026
AG-UI: tool result messages missing from conversation history on subsequent turns (causes LLM 400) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

CopilotKit/CopilotKit#3884 · 5 comments · 1 reaction · Opened Apr 14, 2026
MessagesSnapshotEvent does not respect emit-messages metadata — subagent messages leak to frontend Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

CopilotKit/CopilotKit#3861 · 3 comments · Opened Apr 13, 2026
🚀 Feature Request: Support custom stream mode and ToolMessage.artifact in LangGraph agent integration. Open

feature request reserved for students

Difficulty 4/5 3-5 days Newbie friendliness 48/100

CopilotKit/CopilotKit#3748 · Opened Apr 10, 2026
🐛 Bug: Duplicate assistant message IDs when multiple tool calls are interleaved with tool results Open

bug reserved for students

Difficulty 3/5 1-2 days Newbie friendliness 55/100

CopilotKit/CopilotKit#3644 · 2 comments · Opened Apr 7, 2026
🐛 Bug: InMemoryAgentRunner.connect() fails to restore sessions on serverless platforms (Vercel, Cloud Run) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

CopilotKit/CopilotKit#3553 · 3 comments · Opened Mar 30, 2026
v2 runtime connect path bypasses agent.connect while run still preserves agent semantics Open

bug

Difficulty 5/5 Over a week Newbie friendliness 45/100

CopilotKit/CopilotKit#3532 · 2 comments · Opened Mar 26, 2026
🐛 Bug: Tool call failing without any error and response Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

CopilotKit/CopilotKit#3510 · 7 comments · Opened Mar 24, 2026
Sub-agent intermediate tool calls disappear from CopilotKit UI after task completion (deepagents) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

CopilotKit/CopilotKit#3462 · 6 comments · 3 reactions · Opened Mar 17, 2026
🚀 Feature Request: Programmatically Add Custom Cards to Chat History from the Frontend (Without Tool Calls) Open

feature request

Difficulty 5/5 Over a week Newbie friendliness 30/100

CopilotKit/CopilotKit#3388 · 3 comments · Opened Mar 6, 2026
🐛 Bug: LangChainAdapter Regression in v1.50.0+ (Unknown provider "undefined") Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

CopilotKit/CopilotKit#3217 · 1 comment · Opened Feb 14, 2026
🚀 Feature Request: Respond to tool call without followUp Open

feature request help wanted

Difficulty 3/5 1-2 days Newbie friendliness 64/100

CopilotKit/CopilotKit#3206 · 6 comments · Opened Feb 12, 2026
ag-ui-langgraph: schema_keys config not respected in get_state_snapshot Open

bug good first issue

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

CopilotKit/CopilotKit#3204 · 3 comments · Opened Feb 12, 2026
🐛 Bug: Authorization header not passed to agents using A2A Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

CopilotKit/CopilotKit#3170 · 4 comments · Opened Feb 9, 2026
🐛 Bug: `agent.runAgent({ forwardedProps })` command routing works once, then fails on subsequent runs (`state.command` not hydrated) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

CopilotKit/CopilotKit#3168 · 2 comments · Opened Feb 8, 2026
ADK Integration: setState doesn't sync with agent backend state Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 32/100

CopilotKit/CopilotKit#3132 · 2 comments · 2 reactions · Opened Jan 30, 2026
🐛 Bug: Tools Breaking with Different Adapters Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

CopilotKit/CopilotKit#2979 · 2 comments · Opened Jan 8, 2026
🐛 Bug: ValueError: Message ID not found in history (v2 Design Components and 1.50.x) with ag-ui Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

CopilotKit/CopilotKit#2974 · 5 comments · 1 reaction · Opened Jan 6, 2026
why i am getting copilot kit ui wrong , all the responses are merged in same response msg but should be alternate as one instruction then one response Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 38/100

CopilotKit/CopilotKit#2883 · 7 comments · 1 reaction · Opened Dec 18, 2025
🐛 Bug: Failed to retrieve assistant: fetch failed（only on windows11,macOS work well） Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 32/100

CopilotKit/CopilotKit#2881 · 2 comments · 1 reaction · Opened Dec 18, 2025
🐛 Bug: Attempted import error: 'CancellationToken' is not exported from '../utils/cancellation.js' (imported as 'CancellationToken'). Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

CopilotKit/CopilotKit#2845 · 7 comments · Opened Dec 13, 2025
🐛 Bug: Sub agents within an agent is not working Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 50/100

CopilotKit/CopilotKit#2732 · 7 comments · Opened Nov 18, 2025
🐛 Bug: inconsistent behavior when interrupting message streams between agent mode (using LangGraph Python) and direct LLM mode Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

CopilotKit/CopilotKit#2711 · 4 comments · Opened Nov 12, 2025
🐛 Bug: Chat should show loading state while agent state is loading Open

bug reserved for students

Difficulty 3/5 1-2 days Newbie friendliness 45/100

CopilotKit/CopilotKit#2653 · 5 comments · 1 reaction · Opened Oct 22, 2025
🐛 Bug/FR: Image Uploads Not Forwarded to AG-UI Agents (PydanticAI) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

CopilotKit/CopilotKit#2577 · 7 comments · 2 reactions · Opened Oct 4, 2025
🚀 Feature Request: multiple actions in useCopilotAction Open

feature request

Difficulty 3/5 1-2 days Newbie friendliness 45/100

CopilotKit/CopilotKit#2435 · 4 comments · Opened Sep 10, 2025
🚀 Feature Request: Duplicate tool names should be prefixed by MCP server name Open

feature request

Difficulty 4/5 3-5 days Newbie friendliness 55/100

CopilotKit/CopilotKit#2409 · 5 comments · Opened Sep 2, 2025
🚀 Feature Request: Support MCP servers with dynamic API keys Open

feature request

Difficulty 5/5 Over a week Newbie friendliness 45/100

CopilotKit/CopilotKit#2407 · 6 comments · 2 reactions · Opened Sep 2, 2025
🚀 Feature Request: How do useCopilotAction pass image data back to LLM? Open

feature request

Difficulty 5/5 Over a week Newbie friendliness 35/100

CopilotKit/CopilotKit#2264 · 6 comments · Opened Aug 3, 2025

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