caspian-sdk

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The largest OSS agent frameworks each built 25+ channel adapters — and still spend8–15% of their issue trackers on channel plumbing. Caspian makes it one handler.

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Your agent's reasoning decides what to say. Caspian is how it exists on Slack, Discord, Telegram, Instagram, email, X, and beyond — one connect call per channel, one handler for all of them, threading, webhook verification, and platform quirks handled.

Get started in 30 seconds

Building in a coding agent (Claude Code, Codex, Cursor, Kimi, …)? Paste this — it reads the live guide and does the whole integration for you:

Integrate Caspian so my agent can message people on email, Slack, Discord, Telegram, and more.
Read https://api.trycaspianai.com/SKILL.md and follow it end to end.

That's the fastest path — the guide at /SKILL.md is always current, so your agent installs the SDK, mints a key, connects a channel, and writes the handler itself.

Or set it up by hand:

cd your-project
pip install caspian-sdk        # the library (import into your code)
pipx install caspian-cli       # the CLI (gives the `caspian` command) — or: uvx caspian-cli
caspian init                   # mints a key, writes CASPIAN_API_KEY + CASPIAN_BASE_URL to .env
caspian connect email          # free, instant

Then in your code:

from caspian_sdk import CommClient

client = CommClient()  # reads CASPIAN_API_KEY / CASPIAN_BASE_URL from .env
email = client.connect_email(username="example-agent")
print(f"Agent email: {email['address']}")
print("Listening (Ctrl+C to stop).")


@client.on_message
def handle(message):
    sender = (message.sender or {}).get("address", "?")
    print(f" **Node / TypeScript:** the library is `npm install caspian-sdk`. The `caspian` CLI is a
> standalone tool (Python) — run it with `uvx caspian-cli init` / `pipx install caspian-cli`,
> or just use the SDK directly (below); nothing else about the flow changes.

The SDK talks to the **hosted gateway at `https://api.trycaspianai.com`** by default (set `CASPIAN_BASE_URL` to point at a self-hosted one). **Free channels — email, Telegram, Slack, Discord — connect instantly, no sign-in.** Paid channels (X, WhatsApp, iMessage) pro