Install the pkg.pr.new build of @copilotkit/runtime from PR #4482 to
validate the runFinished fix that stops duplicate TOOL_CALL_END events
in convertTanStackStream after TanStack's RUN_FINISHED.
Adds hitl-in-app, readonly-state-agent-context, auth, agent-config,
voice, multimodal, byoc-hashbrown, and byoc-json-render demos to the
built-in-agent showcase. Each demo lives under src/app/demos/<feature>
with a dedicated runtime route under src/app/api/copilotkit-<feature>
where required.
Patterns:
- hitl-in-app and readonly-state-agent-context are frontend-only and
reuse the default /api/copilotkit runtime.
- auth uses createCopilotRuntimeHandler with the V2 onRequest hook to
reject requests missing the Bearer token.
- agent-config reads input.forwardedProps inside the BuiltInAgent
factory and prepends a tone/expertise/length-tuned system prompt.
- voice mounts at [[...slug]]/route.ts and registers
TranscriptionServiceOpenAI from @copilotkit/voice; falls back to a
401 with 'api key missing' when OPENAI_API_KEY is unset.
- multimodal reuses the base gpt-4o factory (vision-capable) and the
TanStack converter (convertInputToTanStackAI) for native image and
document part forwarding — no langgraph-specific binary rewrite.
- byoc-hashbrown and byoc-json-render add per-demo factories that pin
modelOptions.response_format to json_object so the streaming UI
parsers receive a single valid JSON object with no preamble.
Jordan Ritter