Search

[sub.audio](https://sub.audio) – generate subtitles and chapters for any audio URL.

Speech-to-text and chapter summaries powered by [Substrate](https://substrate.run)

🪩 To fork, [sign up for Substrate](https://substrate.run/signin) to get your own API key and $50 free credits

import { ComputeJSON, sb, Substrate, TranscribeSpeech } from "npm:substrate";

import { extractValInfo } from "https://esm.town/v/pomdtr/extractValInfo?v=29";

async function processAudio(audio_uri) {

const substrate = new Substrate({ apiKey: Deno.env.get("SUBSTRATE_API_KEY") });

const opts = { cache_age: 60 * 60 * 24 * 7 };

opts,

const res = await substrate.run(transcribe, chapters, timestamps);

return {

<meta name="viewport" content="width=device-width, initial-scale=1.0" />

<link rel="icon" href="https://www.substrate.run/favicon.ico" type="image/x-icon">

<link

!audio_uri

? `<a id="federer-link" href="?url=https://media.substrate.run/federer-dartmouth.m4a">Or try an example: federer-dartmouth.m4a</a>`

<div id="loading">Running...</div>

</div>

<a id="made-with" href="https://substrate.run" target="_blank"

>made with <b>substrate</b></a

<a id="view-source" href="${extractValInfo(import.meta.url).htmlUrl}" target="_blank"

[sub.audio](https://sub.audio) – generate subtitles and chapters for any audio URL.

Speech-to-text and chapter summaries powered by [Substrate](https://substrate.run)

🪩 To fork, [sign up for Substrate](https://substrate.run/signin) to get your own API key and $50 free credits

import { ComputeJSON, sb, Substrate, TranscribeSpeech } from "npm:substrate";

import { extractValInfo } from "https://esm.town/v/pomdtr/extractValInfo?v=29";

async function processAudio(audio_uri) {

const substrate = new Substrate({ apiKey: Deno.env.get("SUBSTRATE_API_KEY") });

const opts = { cache_age: 60 * 60 * 24 * 7 };

opts,

const res = await substrate.run(transcribe, chapters, timestamps);

return {

<meta name="viewport" content="width=device-width, initial-scale=1.0" />

<link rel="icon" href="https://www.substrate.run/favicon.ico" type="image/x-icon">

<link

!audio_uri

? `<a id="federer-link" href="?url=https://media.substrate.run/federer-dartmouth.m4a">Or try an example: federer-dartmouth.m4a</a>`

<div id="loading">Running...</div>

</div>

<a id="made-with" href="https://substrate.run" target="_blank"

>made with <b>substrate</b></a

<a id="view-source" href="${extractValInfo(import.meta.url).htmlUrl}" target="_blank"

Find comments on HN (powered by [Algolia](https://hn.algolia.com/api)), extract content and return a streaming markdown summary (powered by [Substrate](https://substrate.run)).

The RAG portion of this is 34 lines of Substrate code. Read the walkthrough: https://x.com/vprtwn/status/1812844236401762513

🪩 To fork, [sign up for Substrate](https://substrate.run/signin) to get your own API key and $50 free credits.

See also:

- https://www.val.town/v/substrate/twitterRAG

import { hnSearch } from "https://esm.town/v/stevekrouse/hnSearch";

import { ComputeJSON, ComputeText, sb, Substrate } from "npm:substrate";

import { z } from "npm:zod";

import { zodToJsonSchema } from "npm:zod-to-json-schema";

const substrate = new Substrate({ apiKey: Deno.env.get("SUBSTRATE_API_KEY") });

}); markdown.id = "markdown"

const stream = await substrate.stream(markdown);

export default async function handler(req: Request): Promise<Response> {

const renderMarkdown = (await import("https://esm.town/v/substrate/renderMarkdown")).default;

return renderMarkdown(stream);

import wrapper from "https://esm.town/v/substrate/substrateBadgeMiddleware";

async function handler(req: Request): Promise<Response> {

import valTownBadge from "https://esm.town/v/substrate/substrateBadge";

export default function badgeMiddleware(handler, url: string) {

return async function(req: Request): Promise<Response> {

🪩 To fork, [sign up for Substrate](https://substrate.run/signin) to get your own API key and $50 free credits

import { ComputeJSON, ComputeText, GenerateImage, sb, StableVideoDiffusion, Substrate } from "npm:substrate";

const substrate = new Substrate({ apiKey: Deno.env.get("SUBSTRATE_API_KEY") });

// const res = await substrate.run(...videoNodes);

"https://cdn.substrate.run/u/TdI00FeAB8nzr0Su/d73078011783f5ac37980e47df9d0ee7985fd2d476eed501_1722427247.gif",

"https://cdn.substrate.run/u/TdI00FeAB8nzr0Su/69c79387d16391d3f8c246ccbd694bed55f39d3a60a66fde_1722427247.gif",

"https://cdn.substrate.run/u/TdI00FeAB8nzr0Su/75db479fdc66d185edbf24f7b037257adb98ec7bfe7b10db_1722427248.gif",

"https://cdn.substrate.run/u/TdI00FeAB8nzr0Su/bd26d54a083b540210ac23bc9fd296fc13db9a9edff6718b_1722427271.gif",

"https://cdn.substrate.run/u/TdI00FeAB8nzr0Su/b14849ad8bb9af9c60567d85d37de79c1d634748ed6ad9d4_1722427265.gif",

<title>GIF Story | Substrate</title>

<a href="https://www.substrate.run" target="_blank" style="font-size:0.8rem;color:#000;text-decoration:none;display:block;">made with Substrate</a>

Find comments on HN (powered by [Algolia](https://hn.algolia.com/api)), extract content and return a streaming markdown summary (powered by [Substrate](https://substrate.run)).

The RAG portion of this is 34 lines of Substrate code. Twitter thread walkthrough: https://x.com/vprtwn/status/1812844236401762513

🪩 To fork, [sign up for Substrate](https://substrate.run/signin) to get your own API key and $50 free credits.

import { hnSearch } from "https://esm.town/v/stevekrouse/hnSearch";

import inputHeader from "https://esm.town/v/substrate/inputHeader";

import { ComputeJSON, ComputeText, sb, Substrate } from "npm:substrate";

import { z } from "npm:zod";

import { zodToJsonSchema } from "npm:zod-to-json-schema";

const substrate = new Substrate({ apiKey: Deno.env.get("SUBSTRATE_API_KEY") });

model: "Llama3Instruct70B",

const stream = await substrate.stream(markdown);

Find comments on HN (powered by [Algolia](https://hn.algolia.com/api)), extract content and return a streaming markdown summary (powered by [Substrate](https://substrate.run)).

The RAG portion of this is 34 lines of Substrate code. Read the walkthrough: https://x.com/vprtwn/status/1812844236401762513

🪩 To fork, [sign up for Substrate](https://substrate.run/signin) to get your own API key and $50 free credits.

See also:

- https://www.val.town/v/substrate/twitterRAG

import { hnSearch } from "https://esm.town/v/stevekrouse/hnSearch";

import { ComputeJSON, ComputeText, sb, Substrate } from "npm:substrate";

import { z } from "npm:zod";

import { zodToJsonSchema } from "npm:zod-to-json-schema";

const substrate = new Substrate({ apiKey: Deno.env.get("SUBSTRATE_API_KEY") });

markdown.id = "markdown";

const stream = await substrate.stream(markdown);

export default async function handler(req: Request): Promise<Response> {

const renderMarkdown = (await import("https://esm.town/v/substrate/renderMarkdown")).default;

return renderMarkdown(stream);

Generate a description for an image, generate the image, and upscale it.

🪩 To fork, [sign up for Substrate](https://substrate.run/signin) to get your own API key and $50 free credits

import { ComputeText, GenerateImage, Substrate, UpscaleImage } from "npm:substrate";

const substrate = new Substrate({ apiKey: Deno.env.get("SUBSTRATE_API_KEY") });

const prompt = "futuristic city of atlants";

const upscale = new UpscaleImage({ prompt: description.future.text, image_uri: image.future.image_uri, output_resolution: 2048 }); upscale.cache_age = 60; upscale.id = "upscale";

const stream = substrate.stream(upscale);

export default async function render(req: Request): Promise<Response> {

const renderNodeResults = (await import("https://esm.town/v/substrate/renderNodeResults")).default;

return renderNodeResults(stream);

Find comments on HN (powered by [Algolia](https://hn.algolia.com/api)), extract content and return a streaming markdown summary (powered by [Substrate](https://substrate.run)).

The RAG portion of this is 34 lines of Substrate code. Twitter thread walkthrough: https://x.com/vprtwn/status/1812844236401762513

🪩 To fork, [sign up for Substrate](https://substrate.run/signin) to get your own API key and $50 free credits.

import { hnSearch } from "https://esm.town/v/stevekrouse/hnSearch";

import inputHeader from "https://esm.town/v/substrate/inputHeader";

import { ComputeJSON, ComputeText, sb, Substrate } from "npm:substrate";

import { z } from "npm:zod";

import { zodToJsonSchema } from "npm:zod-to-json-schema";

const substrate = new Substrate({ apiKey: Deno.env.get("SUBSTRATE_API_KEY") });

model: "Llama3Instruct70B",

const stream = await substrate.stream(markdown);

Render streaming html

export default function renderHTML(stream: any) {

let { readable, writable } = new TransformStream();

let writer = writable.getWriter();

const textEncoder = new TextEncoder();

let htmlStarted = false;

let logLines = [];

new Promise(async () => {

for await (const event of stream) {

if (event.object === "node.result") {

Render this badge:


Use the middleware: https://www.val.town/v/substrate/substrateBadgeMiddleware

Or:

import substrateBadge from "https://esm.town/v/substrate/substrateBadge";

export default async function(req: Request): Promise<Response> {

const badge = substrateBadge(import.meta.url);

const html = `

const left = 80;

<rect width="${width}" height="${height}" fill="#111" rx="${radius}" ry="${radius}" />

<a href="https://substrate.run">

<text x="8" y="17" textAnchor="start" fill="#fff" style="font-family:system-ui,sans-serif;font-size:12px;font-weight:500;letter-spacing:-0.05em;">

Substrate

</text>

Find similar pages on HN and return a streaming markdown summary.

Powered by [Exa](https://exa.ai/) and [Substrate](https://substrate.run).

🪩 To fork, [sign up for Substrate](https://substrate.run/signin) to get your own API key and $50 free credits.

import urlHeader from "https://esm.town/v/substrate/urlHeader";

import Exa from "npm:exa-js";

import { ComputeText, GenerateImage, sb, Substrate } from "npm:substrate";

const exa = new Exa(Deno.env.get("EXA_API_KEY"));

const substrate = new Substrate({ apiKey: Deno.env.get("SUBSTRATE_API_KEY") });

export default async function handler(req: Request): Promise<Response> {

model: "Llama3Instruct70B",

const stream = await substrate.stream(summary);

let { readable, writable } = new TransformStream();

NOTE: We've disabled the Exa API key in this demo due to high volume – you'll need to fork and provide your own to use it.

Search on Twitter (powered by [Exa](https://exa.ai)) and return a streaming markdown summary (powered by [Substrate](https://substrate.run)).

To fork, [sign up for Substrate](https://substrate.run/) to get your own API key and $51 free credits.

You'll also need Exa, which comes with generous free credits and can be a much cheaper alternative to the Twitter API.

import Exa from "npm:exa-js";

import { ComputeJSON, ComputeText, sb, Substrate } from "npm:substrate";

import { z } from "npm:zod";

const exa = new Exa(Deno.env.get("EXA_API_KEY"));

const substrate = new Substrate({ apiKey: Deno.env.get("SUBSTRATE_API_KEY") });

const query = `"exa.ai" OR "@ExaAILabs"`;

markdown.id = "markdown";

const stream = await substrate.stream(markdown);

export default async function handler(req: Request): Promise<Response> {

const renderMarkdown = (await import("https://esm.town/v/substrate/renderMarkdown")).default;

return renderMarkdown(stream);