> ## Documentation Index > Fetch the complete documentation index at: https://docs.flowra.dev/llms.txt > Use this file to discover all available pages before exploring further. # Stream thread run > Run the agent/chat for this thread and stream the response via Server-Sent Events (SSE). Use for real-time chat UIs; events include message deltas and run status. ## OpenAPI ````yaml /api-reference/openapi.json post /api/v1/graphify/threads/{thread_id}/runs/stream openapi: 3.0.0 info: title: Flowra API (API Key Endpoints) description: >- **Flowra** is an AI-powered platform for building agents, workflows, and integrations. ### Capabilities - **Tools & Toolkits** – Define and group tools for agents and workflows. - **Workflows** – Orchestrate steps and automate processes. - **Triggers** – Schedule or event-based execution. - **Auth & Connections** – OAuth, API keys, and connected accounts. - **MCP** – Model Context Protocol server integration. - **Knowledge / RAG** – Add files and URLs for retrieval-augmented generation. ### Authentication Use the **x-api-key** header with a project API key to access endpoints that support API Key auth. Create and manage API keys in the dashboard under your project settings. Only endpoints that support API Key authentication via the @ApiKeyEnabled() decorator. Send x-api-key (required). On multi-tenant endpoints, optionally send x-username to act as an external user. Only endpoints that support API Key authentication via the @ApiKeyEnabled() decorator. Send x-api-key (required). On multi-tenant endpoints, optionally send x-username (defaults to the project’s default external user). version: '1.0' contact: name: Flowra url: https://flowra.dev servers: - url: https://flowra.dev description: Flowra API security: [] tags: - name: Users description: User profile - name: External Users description: End-user identities inside a project (x-username) - name: Auth Configs description: OAuth and API key configs for toolkits - name: Connected Accounts description: OAuth connected accounts and link creation - name: Toolkits description: List and search toolkits - name: Tools description: List, execute, and manage tools - name: Skills description: Browse, create, import, and install skills - name: Workflow & Agent description: Create, run, and inspect workflows and agents - name: Triggers description: Schedule and event-based trigger instances - name: Chat description: Threads and streaming agent runs - name: File description: Upload, list, and download files - name: Knowledge description: RAG knowledge collections - name: Table description: Collections and documents - name: Sandbox description: Ephemeral and durable code sandboxes - name: Browser description: Live browser sessions and view - name: LLM description: List AI models and generate completions - name: MCP description: MCP server management paths: /api/v1/graphify/threads/{thread_id}/runs/stream: post: tags: - Chat summary: Stream thread run description: >- Run the agent/chat for this thread and stream the response via Server-Sent Events (SSE). Use for real-time chat UIs; events include message deltas and run status. operationId: GraphifyController_streamThreadRun parameters: - name: thread_id required: true in: path description: Thread ID schema: example: b737d8af-a9e0-4251-9714-3fdc1126e5fb type: string - name: x-username in: header required: false description: >- External user (end user) to act as. Optional — if omitted, Flowra uses the project’s default external user. Send a stable username (e.g. customer_alice) only when you need another end-user context. schema: type: string default: (project default user) example: customer_alice requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/StreamThreadRunDto' responses: '200': description: Operation completed successfully '201': description: '' security: - x-api-key: [] - x-api-key: [] x-username: [] components: schemas: StreamThreadRunDto: $ref: '#/components/schemas/StreamThreadRunDto' type: object properties: input: description: >- Graph state input (e.g. new messages). Omit when only sending `command` (e.g. HITL resume after interrupt). allOf: - $ref: '#/components/schemas/ThreadInputDto' command: type: object description: >- Run command forwarded as-is (e.g. `{ "resume": { "decisions": [...] } }` for human-in-the-loop). Required when resuming without new messages. example: resume: decision: approve stream_mode: description: Stream modes example: - values - messages-tuple - custom type: array items: type: string stream_subgraphs: type: boolean description: Stream subgraphs example: true default: true stream_resumable: type: boolean description: Stream resumable example: true default: true assistant_id: type: string description: Assistant ID example: flowra-assistant on_disconnect: type: string description: Action on disconnect example: continue default: continue workflowId: type: string description: Workflow ID (agent workflow) to use for this conversation example: uuid model: type: string description: >- Optional model id override for this run (session-scoped). When set, wins over the agent workflow default model. example: openai/gpt-4o-mini securitySchemes: x-api-key: type: apiKey in: header name: x-api-key description: >- Project API key. Create and manage keys in the dashboard under Project → API Keys. Send as header: x-api-key: x-username: type: apiKey in: header name: x-username description: >- Optional. External user username. If omitted, Flowra uses the project’s default external user. Send as header: x-username: ````