Quickstart

Send your first scheduled post across ten networks in five minutes — no platform approvals, no OAuth dance.

1. Create an account

Sign up free — you get a live workspace plus a sandbox workspace that starts empty.

2. Copy a key

In the dashboard, open API Keys. Use bsk_test_… against the sandbox and bsk_live_… against your real channels. All requests authenticate with a Bearer header:

Authorization: Bearer bsk_test_…

3. List channels

curl https://api.buffersass.dev/2/channels -H "Authorization: Bearer bsk_test_…"

{
  "data": [
    { "id": "cha_9a1…", "service": "x",
      "service_username": "sandbox_x", "schedules": [ … ] },
    …channels you connect for testing…
  ]
}

4. Create your first post

Omit scheduled_at to drop it into the next open queue slot for that channel — exactly like “Add to Queue” in Buffer.

curl -X POST https://api.buffersass.dev/2/updates \
  -H "Authorization: Bearer bsk_test_…" \
  -H "Content-Type: application/json" \
  -d '{
    "channel_ids": ["cha_9a1…"],
    "text": "Hello from buffer_sass 👋"
  }'

{
  "data": [
    { "id": "upd_7c2…", "status": "scheduled",
      "scheduled_at": "2026-11-09T17:30:00Z" }
  ],
  "message": "OK"
}

5. Watch it publish

When the scheduled time arrives, the update is delivered and flips to sent with metrics attached. Poll the queue, or — better — subscribe to the update.sent webhook.

Next steps

• Full endpoint list: REST v2 reference
• Prefer GraphQL? GraphQL reference
• Keep requests cheap: Efficient API Usage