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5// main controller function
6export async function emailValHandler(receivedEmail) {
7  const openaiUrl = "https://api.openai.com/v1/chat/completions";
8  const apiKey = Deno.env.get("OPENAI_API_KEY"); // replace this entire line with your OpenAI API key as a string, e.g., "sk-123..." or use environment variable: https://docs.val.town/reference/environment-variables/
9  const model = "gpt-4o-mini";
10
11  if (!apiKey) {
12    throw new Error(
13      "OPENAI_KEY environment variable is not set. Please set it or replace this line with your API key.",
14    );
15  }
35  const prompt = generatePrompt(receivedEmail, pdfTexts, emailText);
36
37  // step 4: send prompt to openai
38  const openaiResponse = await sendRequestToOpenAI(prompt, openaiUrl, apiKey, model);
39
40  // log the openai response
41  console.log("openai response:", openaiResponse);
42
43  // step 5: send the response back via email
44  await sendResponseByEmail(receivedEmail.from, openaiResponse);
45
46  console.log("response email sent.");
97}
98
99// helper function to generate a prompt for openai
100function generatePrompt(email, pdfTexts, emailText) {
101  // extract the first name from the 'from' field if it exists
121}
122
123// helper function to send a request to openai
124async function sendRequestToOpenAI(prompt, openaiUrl, apiKey, model) {
125  try {
126    // prepare the openai messages payload
127    const messages = [
128      {
142    };
143
144    // send the request to openai
145    const response = await fetch(openaiUrl, {
146      method: "POST",
147      body: JSON.stringify(body),
154    // parse the response
155    const data = await response.json();
156    return data.choices[0]?.message?.content || "no response from openai.";
157  } catch (err) {
158    console.error("error in sendRequestToOpenAI:", err);
159    return "error processing your request.";
160  }

6
7This script allows you to:
8- Send emails to OpenAI. The text will be treated as the prompt
9- Parse PDF attachments and include their contents in the AI's analysis.
10- Get response directly to your inbox.
141. Copy this Val and save it as an Email Val (choose Val type in top-right corner of editor)
15
162. Add your OpenAI API key to line 8 (or use an environment variable: https://docs.val.town/reference/environment-variables/)
17
183. Copy the email address of the Val (click 3 dots in top-right > Copy > Copy email address)

35Use Cerebras for AI on the backend like so:
36
37const { OpenAI } = await import("https://esm.sh/openai");
38const client = new OpenAI({
39  apiKey: Deno.env.get("CEREBRAS_API_KEY"),
40  baseURL: "https://api.cerebras.ai/v1"

19
202. Set up the required environment variables:
21   - OPENAI_API_KEY: Your OpenAI API key
22   - MD_API_KEY: Your API key for the markdown extraction service (optional)
23

71  if (request.method === "POST" && new URL(request.url).pathname === "/chat") {
72    try {
73      const { OpenAI } = await import("https://esm.town/v/std/openai");
74      const openai = new OpenAI();
75
76      const { messages } = await request.json();
77
78      const completion = await openai.chat.completions.create({
79        messages: messages,
80        model: "gpt-4o-mini",

5// main controller function
6export async function emailValHandler(receivedEmail) {
7  const openaiUrl = "https://api.openai.com/v1/chat/completions";
8  const apiKey = Deno.env.get("OPENAI_KEY"); // replace this entire line with your OpenAI API key as a string, e.g., "sk-123..." or use environment variable: https://docs.val.town/reference/environment-variables/
9  const model = "gpt-4o-mini";
10
11  if (!apiKey) {
12    throw new Error(
13      "OPENAI_KEY environment variable is not set. Please set it or replace this line with your API key.",
14    );
15  }
35  const prompt = generatePrompt(receivedEmail, pdfTexts, emailText);
36
37  // step 4: send prompt to openai
38  const openaiResponse = await sendRequestToOpenAI(prompt, openaiUrl, apiKey, model);
39
40  // log the openai response
41  console.log("openai response:", openaiResponse);
42
43  // step 5: send the response back via email
44  await sendResponseByEmail(receivedEmail.from, openaiResponse);
45
46  console.log("response email sent.");
97}
98
99// helper function to generate a prompt for openai
100function generatePrompt(email, pdfTexts, emailText) {
101  // extract the first name from the 'from' field if it exists
121}
122
123// helper function to send a request to openai
124async function sendRequestToOpenAI(prompt, openaiUrl, apiKey, model) {
125  try {
126    // prepare the openai messages payload
127    const messages = [
128      {
142    };
143
144    // send the request to openai
145    const response = await fetch(openaiUrl, {
146      method: "POST",
147      body: JSON.stringify(body),
154    // parse the response
155    const data = await response.json();
156    return data.choices[0]?.message?.content || "no response from openai.";
157  } catch (err) {
158    console.error("error in sendRequestToOpenAI:", err);
159    return "error processing your request.";
160  }

6
7This script allows you to:
8- Send emails to OpenAI. The text will be treated as the prompt
9- Parse PDF attachments and include their contents in the AI's analysis.
10- Get response directly to your inbox.
141. Copy this Val and save it as an Email Val (choose Val type in top-right corner of editor)
15
162. Add your OpenAI API key to line 8 (or use an environment variable: https://docs.val.town/reference/environment-variables/)
17
183. Copy the email address of the Val (click 3 dots in top-right > Copy > Copy email address)

1# OpenAI Proxy
2
3This OpenAI API proxy injects Val Town's API keys. For usage documentation, check out https://www.val.town/v/std/openai
4
5# Usage Note

1import { parseBearerString } from "https://esm.town/v/andreterron/parseBearerString";
2import { API_URL } from "https://esm.town/v/std/API_URL?v=5";
3import { OpenAIUsage } from "https://esm.town/v/std/OpenAIUsage";
4import { RateLimit } from "npm:@rlimit/http";
5const client = new OpenAIUsage();
6
7const allowedPathnames = [
42
43  // Proxy the request
44  const url = new URL("." + pathname, "https://api.openai.com");
45  url.search = search;
46
47  const headers = new Headers(req.headers);
48  headers.set("Host", url.hostname);
49  headers.set("Authorization", `Bearer ${Deno.env.get("OPENAI_API_KEY")}`);
50  headers.set("OpenAI-Organization", Deno.env.get("OPENAI_API_ORG"));
51
52  const modifiedBody = await limitFreeModel(req, user);
63  });
64
65  const openAIRes = await fetch(url, {
66    method: req.method,
67    headers,
71
72  // Remove internal header
73  const res = new Response(openAIRes.body, openAIRes);
74  res.headers.delete("openai-organization");
75  return res;
76}

126. Uses EPA's ranking to classify the severity of the score (ie "Unhealthy for Sensitive Groups")
13
14It uses blob storage to cache the openai location id for your location string to skip a couple steps for the next time.
15
16## Example usage