What shipped

Spectrum adds a markdown() function that accepts CommonMark (plus GFM tables and strikethrough) and renders it through each provider's native formatting model. On iMessage, that means UTF-16 styled text formatting ranges in remote mode. On Telegram, it renders via parse_mode: "HTML". On WhatsApp, it maps to native formatting. Platforms without native Markdown support receive clean plain text via the send pipeline's automatic fallback.

import { markdown } from "spectrum-ts";

await space.send(markdown("**Bold** and _italic_ text."));

import { markdown } from "spectrum-ts";

await space.send(markdown("**Bold** and _italic_ text."));

import { markdown } from "spectrum-ts";

await space.send(markdown("**Bold** and _italic_ text."));

Supported styles:

• Bold

• Italic

• Strikethrough

• Code blocks — on iMessage, rendered via mathematical ASCII Unicode characters; on Telegram and WhatsApp, rendered as native code blocks

Why it matters

These platforms support styled text, but not Markdown or HTML directly. Spectrum bridges that gap — you write standard Markdown, and each platform gets native formatting. No workarounds, no raw ** markers leaking into messages.

This is useful for:

• Automated notifications and alerts sent via iMessage, Telegram, or WhatsApp

• AI-powered bots that stream styled responses

• Any workflow where you want formatted text across multiple platforms

Streaming markdown

markdown() also accepts a stream source. Markdown streams render progressively on Telegram and WhatsApp. On other platforms, the accumulated text falls back through the pipeline cleanly.

import { markdown } from "spectrum-ts";
import { streamText as aiStreamText } from "ai";

const result = aiStreamText({ model, prompt: message.content.text });
await space.send(markdown(result));

import { markdown } from "spectrum-ts";
import { streamText as aiStreamText } from "ai";

const result = aiStreamText({ model, prompt: message.content.text });
await space.send(markdown(result));

import { markdown } from "spectrum-ts";
import { streamText as aiStreamText } from "ai";

const result = aiStreamText({ model, prompt: message.content.text });
await space.send(markdown(result));

Markdown is outbound-only by design. Inbound messages always surface as text content regardless of platform formatting.

Get started

• Docs — Markdown

• Release notes

Upgrade today and start sending styled messages across iMessage, Telegram, and WhatsApp.