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Spectrum by Photon

Open-source framework connecting AI agents to iMessage, WhatsApp, Telegram, Slack, Discord and Instagram

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freemiumThree published tiers. Free covers individuals with community support, unlimited daily iMessage messages, RCS and SMS fallback, full direct-messaging iMessage API access, iOS 26 features including polls and background customisation, up to 10 users, and Telegram plus included SMS/RCS. Pro is $25/mo for the iMessage line and raises the limit to 100 users, adds fast-track ticketing on top of community support, and keeps the same channel feature set — aimed at early-stage startups. Business is $250 per line per month for dedicated iMessage lines with unlimited daily messages, dedicated infrastructure, full platform access, and a dedicated Slack and Discord support channel. The framework itself is open source and free to run.View full pricing →

Visit Spectrum by Photon

https://photon.codes

About Spectrum by Photon

Spectrum is an open-source framework for putting AI agents into the messaging apps people already use, instead of behind another web chat widget nobody opens. It connects an agent to iMessage, WhatsApp, Discord, Slack, Telegram and Instagram through one TypeScript API: you register providers, handle inbound messages by type in a single onMessage callback, and send back text, attachments, stickers, polls or reactions without writing per-platform plumbing. Routing is a first-class idea — `spectrum.send()` can auto-select the best available channel for a recipient, or you can pin a specific one and declare a fallback, so a message routed through iMessage drops to Telegram if iMessage is unavailable. iMessage is the deepest integration and the reason most people arrive: direct messages, group chats, rich media, location sharing, mini apps, SMS/RCS fallback and iOS 26 features including polls and background customisation, on infrastructure the company positions as production-grade for agents with a published 99.95% figure. Because it is a framework rather than a hosted bot builder, the agent logic stays yours — the examples show it wrapping an ordinary Agent object whose generate() call produces the reply. The project has a sizeable Discord community (3.2k members at the time of writing) and ships docs plus a copyable agent instruction for setting it up from a coding agent.

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Key Features

One API across iMessage, WhatsApp, Discord, Slack, Telegram and Instagram
Automatic best-channel selection with explicit per-channel fallback
Rich iMessage support: group chats, media, location, mini apps, polls, SMS/RCS fallback
Typed onMessage handling for text, attachments and reactions
Open-source framework — your agent logic stays yours
Active Discord community and copy-paste agent setup instructions

Spectrum by Photon Pros & Cons

Pros

  • +iMessage access is the hard part of this category and it is the headline feature
  • +Free tier is genuinely usable at up to 10 users with unlimited messages
  • +Framework rather than a closed bot builder

⚠️ Cons

  • Per-line Business pricing at $250/mo scales expensively across numbers
  • iMessage delivery inherently depends on Apple's ecosystem rules
  • TypeScript-first — no first-class SDK in other languages

Tags

imessagewhatsapptelegrammessagingopen-sourcetypescript
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