SMS tool async function handler(env, req) { if (await ratelimit( req.headers["x - session - id"] )) { return "limit reached"; } const { phone } = await db.get( req.headers["x - identity"] ); await twilio.messages.create({ from: env.TWILIO_PHONE_NUMBER, to: phone, body: req.body.message, }); return "message sent"; } X-Identity: user:dkundel X-Session-Id: demo Function: Send SMS Function Input: { to: “+13334445555"; message: "Hi"; } LLM