Individual skill

openrouter-streaming-setup

Implement streaming responses with OpenRouter for real-time UIs. Use when building chat interfaces, reducing time-to-first-token, or processing long completions. Triggers: 'openrouter streaming', 'openrouter sse', 'stream response openrouter', 'real-time openrouter'.

skills/.curated/openrouter-streaming-setup/SKILL.md

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Repository stars (not skill ratings): 2,917
Repository last updated: Nov 12, 2026
License: MIT

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ai Repository topic
automation Repository topic
claude-code Repository topic
devops Repository topic
mcp Repository topic
ai-agents Repository topic
anthropic Repository topic
claude-code-plugins Repository topic
developer-tools Repository topic
llm Repository topic
saas Declared skill tag
openrouter Declared skill tag
streaming Declared skill tag
real-time Declared skill tag
engineering Derived category

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SKILL.mdcore · 10,320 bytes
SKILL.mdcore · 10,320 bytes
SKILL.mdcore · 10,320 bytes
SKILL.mdcore · 10,320 bytes
SKILL.mdcore · 10,320 bytes
SKILL.mdcore · 10,320 bytes
references/async-streaming.mddoc · 1,087 bytes
references/basic-streaming.mddoc · 1,555 bytes
references/error-handling-in-streams.mddoc · 1,919 bytes
references/errors.mddoc · 478 bytes
references/examples.mddoc · 3,554 bytes
references/frontend-integration.mddoc · 2,086 bytes
references/stream-processing.mddoc · 1,914 bytes
references/web-framework-integration.mddoc · 2,319 bytes

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# OpenRouter Streaming Setup

## Overview

OpenRouter supports Server-Sent Events (SSE) streaming via `stream: true`, compatible with the OpenAI SDK. Streaming returns tokens as they're generated, reducing time-to-first-token (TTFT) from seconds to milliseconds. Usage stats are available via `stream_options: {include_usage: true}` in the final chunk. This skill covers Python and TypeScript streaming, SSE forwarding to browsers, and error recovery.

## Prerequisites

- An OpenRouter API key (`sk-or-v1-...`) exported as `OPENROUTER_API_KEY` — see the `openrouter-install-auth` skill for setup
- Python 3.8+ or Node.js 18+ with the OpenAI SDK (the async example uses `AsyncOpenAI` from the same Python package)
- FastAPI if you plan to forward the SSE stream to browsers per the SSE Forwarding section
- A streaming-appropriate client timeout (e.g. 120s) — longer than for non-streaming requests

## Instructions