Synapse OS proxy — in 60 seconds

curl -N -X POST https://synapseui.dev/api/proxy/intercept \
  -H "content-type: application/json" \
  -H "authorization: Bearer $SYNAPSE_SESSION_JWT" \
  -H "x-provider-api-key: $OPENAI_API_KEY" \
  -D - \
  -d '{
    "workspaceId": "00000000-0000-0000-0000-000000000000",
    "provider": "openai",
    "forward": true,
    "payload": {
      "model": "gpt-4o-mini",
      "stream": true,
      "messages": [
        { "role": "system", "content": "You are a concise assistant." },
        { "role": "user", "content": "Summarize the Synapse OS proxy in one line." }
      ]
    }
  }'

// Node 18+ / Bun / Deno — forwards to OpenAI through the Synapse proxy
// and reads the X-Synapse-* optimization metrics off the response.
const res = await fetch("https://synapseui.dev/api/proxy/intercept", {
  method: "POST",
  headers: {
    "content-type": "application/json",
    // Bearer = the caller's Supabase session JWT from your app.
    authorization: `Bearer ${process.env.SYNAPSE_SESSION_JWT}`,
    // The upstream provider key — never stored server-side, forwarded once.
    "x-provider-api-key": process.env.OPENAI_API_KEY!,
  },
  body: JSON.stringify({
    workspaceId: "00000000-0000-0000-0000-000000000000",
    provider: "openai",
    forward: true,
    payload: {
      model: "gpt-4o-mini",
      stream: true,
      messages: [
        { role: "system", content: "You are a concise assistant." },
        { role: "user", content: "Summarize Synapse OS in one line." },
      ],
    },
  }),
});

// Read Synapse optimization telemetry from the response headers.
const metrics = {
  optimization: res.headers.get("X-Synapse-Optimization"),
  tokensSaved: Number(res.headers.get("X-Synapse-Tokens-Saved") ?? 0),
  reductionRatio: Number(res.headers.get("X-Synapse-Reduction-Ratio") ?? 0),
  messagesRemoved: Number(res.headers.get("X-Synapse-Messages-Removed") ?? 0),
  sharedBlocksStripped: Number(res.headers.get("X-Synapse-Shared-Blocks-Stripped") ?? 0),
  upstream: res.headers.get("X-Synapse-Upstream"),
};
console.log("[synapse]", metrics);

// Stream the upstream response body straight through to your client.
if (!res.body) throw new Error("no upstream body");
const reader = res.body.getReader();
const decoder = new TextDecoder();
while (true) {
  const { value, done } = await reader.read();
  if (done) break;
  process.stdout.write(decoder.decode(value));
}